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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNoteMember_lbl" xml:lang="en-US">Convertible Note [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PromissoryNotesMember_lbl" xml:lang="en-US">Promissory Notes [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertiblePromissoryNotesMember_lbl" xml:lang="en-US">Convertible Promissory Notes [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FunicularNoteMember" xlink:to="ATCH_FunicularNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FunicularNoteMember_lbl" xml:lang="en-US">Funicular Note [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xml:lang="en-US">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeAxis_lbl" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US">Minimum [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US">Maximum [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DevelopedTechnologyMember" xlink:to="ATCH_DevelopedTechnologyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DevelopedTechnologyMember_lbl" xml:lang="en-US">Developed Technology [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CustomerListsMember_lbl" xml:lang="en-US">Customer Lists [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SellersNotesMember" xlink:to="ATCH_SellersNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SellersNotesMember_lbl" xml:lang="en-US">Sellers Notes [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesMember" xlink:to="ATCH_ConvertibleNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNotesMember_lbl" xml:lang="en-US">Convertible Notes [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNotesMember" xlink:to="ATCH_SecuredConvertibleNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SecuredConvertibleNotesMember_lbl" xml:lang="en-US">Secured Convertible Notes [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SubscriptionAgreementMember_lbl" xml:lang="en-US">Subscription Agreement [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TauAgreementMember_lbl" xml:lang="en-US">Tau Agreement [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xml:lang="en-US">Antidilutive Securities [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtSecuritiesMember" xlink:label="us-gaap_ConvertibleDebtSecuritiesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtSecuritiesMember" xlink:to="us-gaap_ConvertibleDebtSecuritiesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleDebtSecuritiesMember_lbl" xml:lang="en-US">Convertible Debt Securities [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TimeBasedStockAwardsMember" xlink:label="ATCH_TimeBasedStockAwardsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TimeBasedStockAwardsMember" xlink:to="ATCH_TimeBasedStockAwardsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TimeBasedStockAwardsMember_lbl" xml:lang="en-US">Time Based Stock Awards [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedMarketConditionStockAwardsMember" xlink:label="ATCH_PerformanceBasedMarketConditionStockAwardsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedMarketConditionStockAwardsMember" xlink:to="ATCH_PerformanceBasedMarketConditionStockAwardsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedMarketConditionStockAwardsMember_lbl" xml:lang="en-US">Performance Based Market Condition Stock Awards [Mem</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PublicWarrantsMember" xlink:label="ATCH_PublicWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PublicWarrantsMember" xlink:to="ATCH_PublicWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PublicWarrantsMember_lbl" xml:lang="en-US">Public Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PrivateWarrantsMember" xlink:label="ATCH_PrivateWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PrivateWarrantsMember" xlink:to="ATCH_PrivateWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PrivateWarrantsMember_lbl" xml:lang="en-US">Private Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SecuredConvertibleNoteWarrantsMember" xlink:label="ATCH_SecuredConvertibleNoteWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNoteWarrantsMember" xlink:to="ATCH_SecuredConvertibleNoteWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SecuredConvertibleNoteWarrantsMember_lbl" xml:lang="en-US">Secured Convertible Note Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantsLiabilityMember" xlink:label="ATCH_WarrantsLiabilityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsLiabilityMember" xlink:to="ATCH_WarrantsLiabilityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantsLiabilityMember_lbl" xml:lang="en-US">Warrants Liability [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" xlink:label="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" xlink:to="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis_lbl" xml:lang="en-US">Cash and Securities Segregated under Federal and Other Regulations [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CustomersTransactionsAndCreditBalancesMember" xlink:label="ATCH_CustomersTransactionsAndCreditBalancesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CustomersTransactionsAndCreditBalancesMember" xlink:to="ATCH_CustomersTransactionsAndCreditBalancesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CustomersTransactionsAndCreditBalancesMember_lbl" xml:lang="en-US">Customers Transactions and Credit Balances [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember" xlink:label="us-gaap_SubsequentEventMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US">Subsequent Event [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_BrokerDealerTransactionsAndCreditBalancesMember" xlink:label="ATCH_BrokerDealerTransactionsAndCreditBalancesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BrokerDealerTransactionsAndCreditBalancesMember" xlink:to="ATCH_BrokerDealerTransactionsAndCreditBalancesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_BrokerDealerTransactionsAndCreditBalancesMember_lbl" xml:lang="en-US">Broker Dealer Transactions and Credit Balances [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xml:lang="en-US">Intangible Asset, Finite-Lived, Class [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillMember" xlink:label="us-gaap_GoodwillMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillMember" xlink:to="us-gaap_GoodwillMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillMember_lbl" xml:lang="en-US">Goodwill [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="us-gaap_DevelopedTechnologyRightsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DevelopedTechnologyRightsMember" xlink:to="us-gaap_DevelopedTechnologyRightsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DevelopedTechnologyRightsMember_lbl" xml:lang="en-US">Developed Technology Rights [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US">Legal Entity [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_QuantumVenturesLLCMember" xlink:label="ATCH_QuantumVenturesLLCMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_QuantumVenturesLLCMember" xlink:to="ATCH_QuantumVenturesLLCMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_QuantumVenturesLLCMember_lbl" xml:lang="en-US">Quantum Ventures LLC [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_BoardOfDirectorsChairmanMember" xlink:label="srt_BoardOfDirectorsChairmanMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_BoardOfDirectorsChairmanMember" xlink:to="srt_BoardOfDirectorsChairmanMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_BoardOfDirectorsChairmanMember_lbl" xml:lang="en-US">Board of Directors Chairman [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_PresidentMember" xlink:label="srt_PresidentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_PresidentMember" xlink:to="srt_PresidentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_PresidentMember_lbl" xml:lang="en-US">President [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FormerOfficersAndDirectorsMember" xlink:label="ATCH_FormerOfficersAndDirectorsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FormerOfficersAndDirectorsMember" xlink:to="ATCH_FormerOfficersAndDirectorsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FormerOfficersAndDirectorsMember_lbl" xml:lang="en-US">Former Officers And Directors [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis" xlink:label="srt_CounterpartyNameAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CounterpartyNameAxis" xlink:to="srt_CounterpartyNameAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_CounterpartyNameAxis_lbl" xml:lang="en-US">Counterparty Name [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SixthBoroughCapitalFundLpMember" xlink:label="ATCH_SixthBoroughCapitalFundLpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SixthBoroughCapitalFundLpMember" xlink:to="ATCH_SixthBoroughCapitalFundLpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SixthBoroughCapitalFundLpMember_lbl" xml:lang="en-US">Sixth Borough Capital Fund Lp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualAxis" xlink:label="srt_TitleOfIndividualAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualAxis" xlink:to="srt_TitleOfIndividualAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_TitleOfIndividualAxis_lbl" xml:lang="en-US">Title and Position [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_GeneralCounselAndChiefFinancialOfficerMember" xlink:label="ATCH_GeneralCounselAndChiefFinancialOfficerMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GeneralCounselAndChiefFinancialOfficerMember" xlink:to="ATCH_GeneralCounselAndChiefFinancialOfficerMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_GeneralCounselAndChiefFinancialOfficerMember_lbl" xml:lang="en-US">General Counsel And Chief Financial Officer [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SandipPatelMember" xlink:label="ATCH_SandipPatelMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SandipPatelMember" xlink:to="ATCH_SandipPatelMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SandipPatelMember_lbl" xml:lang="en-US">Sandip Patel [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SandipIPatelPAMember" xlink:label="ATCH_SandipIPatelPAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SandipIPatelPAMember" xlink:to="ATCH_SandipIPatelPAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SandipIPatelPAMember_lbl" xml:lang="en-US">Sandip I.Patel, P.A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonrelatedPartyMember" xlink:label="us-gaap_NonrelatedPartyMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonrelatedPartyMember" xlink:to="us-gaap_NonrelatedPartyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonrelatedPartyMember_lbl" xml:lang="en-US">Nonrelated Party [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SeriesAConvertibleDebenturesMember" xlink:label="ATCH_SeriesAConvertibleDebenturesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SeriesAConvertibleDebenturesMember" xlink:to="ATCH_SeriesAConvertibleDebenturesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SeriesAConvertibleDebenturesMember_lbl" xml:lang="en-US">Series A Convertible Debentures [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AugustSecuritiesPurchaseAgreementMember" xlink:label="ATCH_AugustSecuritiesPurchaseAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AugustSecuritiesPurchaseAgreementMember" xlink:to="ATCH_AugustSecuritiesPurchaseAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AugustSecuritiesPurchaseAgreementMember_lbl" xml:lang="en-US">August Securities Purchase Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ChardanCapitalMarketsLLCMember" xlink:label="ATCH_ChardanCapitalMarketsLLCMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ChardanCapitalMarketsLLCMember" xlink:to="ATCH_ChardanCapitalMarketsLLCMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ChardanCapitalMarketsLLCMember_lbl" xml:lang="en-US">Chardan Capital Markets LLC [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ChardanNoteMember" xlink:label="ATCH_ChardanNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ChardanNoteMember" xlink:to="ATCH_ChardanNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ChardanNoteMember_lbl" xml:lang="en-US">Chardan Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtMember" xlink:label="us-gaap_ShortTermDebtMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtMember" xlink:to="us-gaap_ShortTermDebtMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtMember_lbl" xml:lang="en-US">Short-Term Debt [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMember" xlink:label="us-gaap_LongTermDebtMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMember" xlink:to="us-gaap_LongTermDebtMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMember_lbl" xml:lang="en-US">Long-Term Debt [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WilsonDavisSellersMember" xlink:label="ATCH_WilsonDavisSellersMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WilsonDavisSellersMember" xlink:to="ATCH_WilsonDavisSellersMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WilsonDavisSellersMember_lbl" xml:lang="en-US">Wilson Davis Sellers [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ShortTermSellerNotesMember" xlink:label="ATCH_ShortTermSellerNotesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShortTermSellerNotesMember" xlink:to="ATCH_ShortTermSellerNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ShortTermSellerNotesMember_lbl" xml:lang="en-US">Short Term Seller Notes [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LongTermSellerNotesMember" xlink:label="ATCH_LongTermSellerNotesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermSellerNotesMember" xlink:to="ATCH_LongTermSellerNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LongTermSellerNotesMember_lbl" xml:lang="en-US">Long Term Seller Notes [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SellerNotesMember" xlink:label="ATCH_SellerNotesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SellerNotesMember" xlink:to="ATCH_SellerNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SellerNotesMember_lbl" xml:lang="en-US">Seller Notes [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="us-gaap_SubsidiarySaleOfStockAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xml:lang="en-US">Sale of Stock [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AtTheMarketAgreementMember" xlink:label="ATCH_AtTheMarketAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtTheMarketAgreementMember" xlink:to="ATCH_AtTheMarketAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AtTheMarketAgreementMember_lbl" xml:lang="en-US">At The Market Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InterestSolutionsNoteMember" xlink:label="ATCH_InterestSolutionsNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InterestSolutionsNoteMember" xlink:to="ATCH_InterestSolutionsNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InterestSolutionsNoteMember_lbl" xml:lang="en-US">Interest Solutions Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_JonesTradingNoteMember" xlink:label="ATCH_JonesTradingNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_JonesTradingNoteMember" xlink:to="ATCH_JonesTradingNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_JonesTradingNoteMember_lbl" xml:lang="en-US">Jones Trading Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ToppanNoteMember" xlink:label="ATCH_ToppanNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ToppanNoteMember" xlink:to="ATCH_ToppanNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ToppanNoteMember_lbl" xml:lang="en-US">Toppan Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_HanirePurchaseAgreementMember" xlink:label="ATCH_HanirePurchaseAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_HanirePurchaseAgreementMember" xlink:to="ATCH_HanirePurchaseAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_HanirePurchaseAgreementMember_lbl" xml:lang="en-US">Hanire Purchase Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PremiumFinncingAgreementMember" xlink:label="ATCH_PremiumFinncingAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PremiumFinncingAgreementMember" xlink:to="ATCH_PremiumFinncingAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PremiumFinncingAgreementMember_lbl" xml:lang="en-US">Premium Finncing Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SeptemberSecuritiesPurchaseAgreementMember" xlink:label="ATCH_SeptemberSecuritiesPurchaseAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SeptemberSecuritiesPurchaseAgreementMember" xlink:to="ATCH_SeptemberSecuritiesPurchaseAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SeptemberSecuritiesPurchaseAgreementMember_lbl" xml:lang="en-US">September Securities Purchase Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TwoThousandTwentyFiveWarrantMember" xlink:label="ATCH_TwoThousandTwentyFiveWarrantMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveWarrantMember" xlink:to="ATCH_TwoThousandTwentyFiveWarrantMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TwoThousandTwentyFiveWarrantMember_lbl" xml:lang="en-US">2025 Warrant [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="us-gaap_ClassOfWarrantOrRightAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightAxis" xlink:to="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US">Class of Warrant or Right [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WinstonStrawnLLPMember" xlink:label="ATCH_WinstonStrawnLLPMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonStrawnLLPMember" xlink:to="ATCH_WinstonStrawnLLPMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WinstonStrawnLLPMember_lbl" xml:lang="en-US">Winston Strawn L L P [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WinstonAndStrawnAgreementMember" xlink:label="ATCH_WinstonAndStrawnAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonAndStrawnAgreementMember" xlink:to="ATCH_WinstonAndStrawnAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WinstonAndStrawnAgreementMember_lbl" xml:lang="en-US">Winston &amp; Strawn Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SettlementAgreementMember" xlink:label="ATCH_SettlementAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SettlementAgreementMember" xlink:to="ATCH_SettlementAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SettlementAgreementMember_lbl" xml:lang="en-US">Settlement Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SixSubordinatedLoanAgreementsMember" xlink:label="ATCH_SixSubordinatedLoanAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SixSubordinatedLoanAgreementsMember" xlink:to="ATCH_SixSubordinatedLoanAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SixSubordinatedLoanAgreementsMember_lbl" xml:lang="en-US">Six Subordinated Loan Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SubordinatedDemandNotesMember" xlink:label="ATCH_SubordinatedDemandNotesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubordinatedDemandNotesMember" xlink:to="ATCH_SubordinatedDemandNotesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SubordinatedDemandNotesMember_lbl" xml:lang="en-US">Subordinated Demand Notes [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetAcquisitionAxis" xlink:label="us-gaap_AssetAcquisitionAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetAcquisitionAxis" xlink:to="us-gaap_AssetAcquisitionAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetAcquisitionAxis_lbl" xml:lang="en-US">Asset Acquisition [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AtlasclearInc.Member" xlink:label="ATCH_AtlasclearInc.Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtlasclearInc.Member" xlink:to="ATCH_AtlasclearInc.Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AtlasclearInc.Member_lbl" xml:lang="en-US">Atlasclear Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AtlasFintechMember" xlink:label="ATCH_AtlasFintechMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtlasFintechMember" xlink:to="ATCH_AtlasFintechMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AtlasFintechMember_lbl" xml:lang="en-US">Atlas Fintech [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_JohnSchaibleAndCraigRidenhourMember" xlink:label="ATCH_JohnSchaibleAndCraigRidenhourMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_JohnSchaibleAndCraigRidenhourMember" xlink:to="ATCH_JohnSchaibleAndCraigRidenhourMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_JohnSchaibleAndCraigRidenhourMember_lbl" xml:lang="en-US">John Schaible and Craig Ridenhour [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementScenarioAxis_lbl" xml:lang="en-US">Scenario [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PayableImmediatelyMember" xlink:label="ATCH_PayableImmediatelyMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PayableImmediatelyMember" xlink:to="ATCH_PayableImmediatelyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PayableImmediatelyMember_lbl" xml:lang="en-US">Payable Immediately [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PayableAtEndOfFirstQuarter2026Member" xlink:label="ATCH_PayableAtEndOfFirstQuarter2026Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PayableAtEndOfFirstQuarter2026Member" xlink:to="ATCH_PayableAtEndOfFirstQuarter2026Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PayableAtEndOfFirstQuarter2026Member_lbl" xml:lang="en-US">Payable At End Of First Quarter 2026 [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_GrantedOnSigningMember" xlink:label="ATCH_GrantedOnSigningMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrantedOnSigningMember" xlink:to="ATCH_GrantedOnSigningMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_GrantedOnSigningMember_lbl" xml:lang="en-US">Granted On Signing [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_GrantedOnJuly12026Member" xlink:label="ATCH_GrantedOnJuly12026Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrantedOnJuly12026Member" xlink:to="ATCH_GrantedOnJuly12026Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_GrantedOnJuly12026Member_lbl" xml:lang="en-US">Granted On July 1 2026 [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPriceMilestoneOneMember" xlink:label="ATCH_StockPriceMilestoneOneMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneOneMember" xlink:to="ATCH_StockPriceMilestoneOneMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPriceMilestoneOneMember_lbl" xml:lang="en-US">Stock Price Milestone One [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPriceMilestoneTwoMember" xlink:label="ATCH_StockPriceMilestoneTwoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneTwoMember" xlink:to="ATCH_StockPriceMilestoneTwoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPriceMilestoneTwoMember_lbl" xml:lang="en-US">Stock Price Milestone Two [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPriceMilestoneThreeMember" xlink:label="ATCH_StockPriceMilestoneThreeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneThreeMember" xlink:to="ATCH_StockPriceMilestoneThreeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPriceMilestoneThreeMember_lbl" xml:lang="en-US">Stock Price Milestone Three [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPriceMilestoneFourMember" xlink:label="ATCH_StockPriceMilestoneFourMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneFourMember" xlink:to="ATCH_StockPriceMilestoneFourMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPriceMilestoneFourMember_lbl" xml:lang="en-US">Stock Price Milestone Four [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPriceMilestoneFiveMember" xlink:label="ATCH_StockPriceMilestoneFiveMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneFiveMember" xlink:to="ATCH_StockPriceMilestoneFiveMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPriceMilestoneFiveMember_lbl" xml:lang="en-US">Stock Price Milestone Five [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember" xlink:label="us-gaap_LineOfCreditMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditMember" xlink:to="us-gaap_LineOfCreditMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditMember_lbl" xml:lang="en-US">Line of Credit [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WilsonDavisCoIncMember" xlink:label="ATCH_WilsonDavisCoIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WilsonDavisCoIncMember" xlink:to="ATCH_WilsonDavisCoIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WilsonDavisCoIncMember_lbl" xml:lang="en-US">Wilson Davis Co Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ServicesLicenseAgreementMember" xlink:label="ATCH_ServicesLicenseAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ServicesLicenseAgreementMember" xlink:to="ATCH_ServicesLicenseAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ServicesLicenseAgreementMember_lbl" xml:lang="en-US">Services License Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_VendorMember" xlink:label="ATCH_VendorMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_VendorMember" xlink:to="ATCH_VendorMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_VendorMember_lbl" xml:lang="en-US">Vendor [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InvestorWarrantsMember" xlink:label="ATCH_InvestorWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InvestorWarrantsMember" xlink:to="ATCH_InvestorWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InvestorWarrantsMember_lbl" xml:lang="en-US">Investor Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PlacementAgentWarrantsMember" xlink:label="ATCH_PlacementAgentWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentWarrantsMember" xlink:to="ATCH_PlacementAgentWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PlacementAgentWarrantsMember_lbl" xml:lang="en-US">Placement Agent Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember" xlink:label="us-gaap_WarrantMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US">Warrant [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PlacementAgentMember" xlink:label="ATCH_PlacementAgentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentMember" xlink:to="ATCH_PlacementAgentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PlacementAgentMember_lbl" xml:lang="en-US">Placement Agent [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SecuredNoteWarrantsMember" xlink:label="ATCH_SecuredNoteWarrantsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredNoteWarrantsMember" xlink:to="ATCH_SecuredNoteWarrantsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SecuredNoteWarrantsMember_lbl" xml:lang="en-US">Secured Note Warrants [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US">Award Type [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember" xlink:label="us-gaap_PerformanceSharesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PerformanceSharesMember" xlink:to="us-gaap_PerformanceSharesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PerformanceSharesMember_lbl" xml:lang="en-US">Performance Shares [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardOneMember" xlink:label="ATCH_PerformanceBasedStockAwardOneMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardOneMember" xlink:to="ATCH_PerformanceBasedStockAwardOneMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardOneMember_lbl" xml:lang="en-US">Performance Based Stock Award One [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardTwoMember" xlink:label="ATCH_PerformanceBasedStockAwardTwoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardTwoMember" xlink:to="ATCH_PerformanceBasedStockAwardTwoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardTwoMember_lbl" xml:lang="en-US">Performance Based Stock Award Two [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardThreeMember" xlink:label="ATCH_PerformanceBasedStockAwardThreeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardThreeMember" xlink:to="ATCH_PerformanceBasedStockAwardThreeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardThreeMember_lbl" xml:lang="en-US">Performance Based Stock Award Three [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardFourMember" xlink:label="ATCH_PerformanceBasedStockAwardFourMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardFourMember" xlink:to="ATCH_PerformanceBasedStockAwardFourMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardFourMember_lbl" xml:lang="en-US">Performance Based Stock Award Four [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardFiveMember" xlink:label="ATCH_PerformanceBasedStockAwardFiveMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardFiveMember" xlink:to="ATCH_PerformanceBasedStockAwardFiveMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardFiveMember_lbl" xml:lang="en-US">Performance Based Stock Award Five [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PerformanceBasedStockAwardMember" xlink:label="ATCH_PerformanceBasedStockAwardMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardMember" xlink:to="ATCH_PerformanceBasedStockAwardMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PerformanceBasedStockAwardMember_lbl" xml:lang="en-US">Performance Based Stock Award [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingAxis" xlink:label="us-gaap_VestingAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingAxis" xlink:to="us-gaap_VestingAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VestingAxis_lbl" xml:lang="en-US">Vesting [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TrancheOneMember" xlink:label="ATCH_TrancheOneMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheOneMember" xlink:to="ATCH_TrancheOneMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TrancheOneMember_lbl" xml:lang="en-US">Tranche One [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TrancheTwoMember" xlink:label="ATCH_TrancheTwoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheTwoMember" xlink:to="ATCH_TrancheTwoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TrancheTwoMember_lbl" xml:lang="en-US">Tranche Two [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TrancheThreeMember" xlink:label="ATCH_TrancheThreeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheThreeMember" xlink:to="ATCH_TrancheThreeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TrancheThreeMember_lbl" xml:lang="en-US">Tranche Three [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TrancheFourMember" xlink:label="ATCH_TrancheFourMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheFourMember" xlink:to="ATCH_TrancheFourMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TrancheFourMember_lbl" xml:lang="en-US">Tranche Four [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TrancheFiveMember" xlink:label="ATCH_TrancheFiveMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheFiveMember" xlink:to="ATCH_TrancheFiveMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TrancheFiveMember_lbl" xml:lang="en-US">Tranche Five [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US">Fair Value Hierarchy and NAV [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US">Fair Value, Inputs, Level 1 [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="us-gaap_FairValueInputsLevel3Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvertibleNotesDerivativeMember" xlink:label="ATCH_ConvertibleNotesDerivativeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesDerivativeMember" xlink:to="ATCH_ConvertibleNotesDerivativeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNotesDerivativeMember_lbl" xml:lang="en-US">Convertible Notes Derivative [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SecuredConvertibleNoteMember" xlink:label="ATCH_SecuredConvertibleNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNoteMember" xlink:to="ATCH_SecuredConvertibleNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SecuredConvertibleNoteMember_lbl" xml:lang="en-US">Secured Convertible Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SettlementWinstonAndStrawnAgreementMember" xlink:label="ATCH_SettlementWinstonAndStrawnAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SettlementWinstonAndStrawnAgreementMember" xlink:to="ATCH_SettlementWinstonAndStrawnAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SettlementWinstonAndStrawnAgreementMember_lbl" xml:lang="en-US">Settlement Winston And Strawn Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LongTermNotesAndChardanNoteMember" xlink:label="ATCH_LongTermNotesAndChardanNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermNotesAndChardanNoteMember" xlink:to="ATCH_LongTermNotesAndChardanNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LongTermNotesAndChardanNoteMember_lbl" xml:lang="en-US">Long Term Notes And Chardan Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MergerFinancingNoteMember" xlink:label="ATCH_MergerFinancingNoteMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingNoteMember" xlink:to="ATCH_MergerFinancingNoteMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MergerFinancingNoteMember_lbl" xml:lang="en-US">Merger Financing Note [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SecuritiesPurchaseAgreementMember" xlink:label="ATCH_SecuritiesPurchaseAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuritiesPurchaseAgreementMember" xlink:to="ATCH_SecuritiesPurchaseAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SecuritiesPurchaseAgreementMember_lbl" xml:lang="en-US">Securities Purchase Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TwoThousandTwentyFiveWarrantLiabilityMember" xlink:label="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember" xlink:to="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember_lbl" xml:lang="en-US">Two Thousand Twenty Five Warrant Liability [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="us-gaap_MeasurementInputTypeAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputTypeAxis" xlink:to="us-gaap_MeasurementInputTypeAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xml:lang="en-US">Measurement Input Type [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputSharePriceMember" xlink:label="us-gaap_MeasurementInputSharePriceMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputSharePriceMember" xlink:to="us-gaap_MeasurementInputSharePriceMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputSharePriceMember_lbl" xml:lang="en-US">Measurement Input, Share Price [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputOptionVolatilityMember" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputOptionVolatilityMember" xlink:to="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xml:lang="en-US">Measurement Input, Option Volatility [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:to="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xml:lang="en-US">Measurement Input, Risk Free Interest Rate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedDividendRateMember" xlink:label="us-gaap_MeasurementInputExpectedDividendRateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputExpectedDividendRateMember" xlink:to="us-gaap_MeasurementInputExpectedDividendRateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputExpectedDividendRateMember_lbl" xml:lang="en-US">Measurement Input, Expected Dividend Rate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputPriceVolatilityMember" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputPriceVolatilityMember" xlink:to="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xml:lang="en-US">Measurement Input, Price Volatility [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExercisePriceMember" xlink:label="us-gaap_MeasurementInputExercisePriceMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputExercisePriceMember" xlink:to="us-gaap_MeasurementInputExercisePriceMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputExercisePriceMember_lbl" xml:lang="en-US">Measurement Input, Exercise Price [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedTermMember" xlink:label="us-gaap_MeasurementInputExpectedTermMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputExpectedTermMember" xlink:to="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xml:lang="en-US">Measurement Input, Expected Term [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputDiscountRateMember" xlink:label="us-gaap_MeasurementInputDiscountRateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputDiscountRateMember" xlink:to="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xml:lang="en-US">Measurement Input, Discount Rate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputDefaultRateMember" xlink:label="us-gaap_MeasurementInputDefaultRateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputDefaultRateMember" xlink:to="us-gaap_MeasurementInputDefaultRateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputDefaultRateMember_lbl" xml:lang="en-US">Measurement Input, Default Rate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MeasurementInputRecoveryRateMember" xlink:label="ATCH_MeasurementInputRecoveryRateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputRecoveryRateMember" xlink:to="ATCH_MeasurementInputRecoveryRateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MeasurementInputRecoveryRateMember_lbl" xml:lang="en-US">Measurement Input Recovery Rate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputConversionPriceMember" xlink:label="us-gaap_MeasurementInputConversionPriceMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputConversionPriceMember" xlink:to="us-gaap_MeasurementInputConversionPriceMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MeasurementInputConversionPriceMember_lbl" xml:lang="en-US">Measurement Input, Conversion Price [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MeasurementInputInterestBalanceMember" xlink:label="ATCH_MeasurementInputInterestBalanceMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputInterestBalanceMember" xlink:to="ATCH_MeasurementInputInterestBalanceMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MeasurementInputInterestBalanceMember_lbl" xml:lang="en-US">Measurement Input Interest Balance [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember" xlink:label="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember" xlink:to="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember_lbl" xml:lang="en-US">Measurement Input Anticipated Monthly Advance Payments [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:label="us-gaap_FairValueByLiabilityClassAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByLiabilityClassAxis" xlink:to="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xml:lang="en-US">Liability Class [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:to="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_lbl" xml:lang="en-US">Derivative Financial Instruments, Liabilities [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnoutLiabilityMember" xlink:label="ATCH_EarnoutLiabilityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityMember" xlink:to="ATCH_EarnoutLiabilityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnoutLiabilityMember_lbl" xml:lang="en-US">Earnout Liability [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MergerFinancingDerivativeMember" xlink:label="ATCH_MergerFinancingDerivativeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingDerivativeMember" xlink:to="ATCH_MergerFinancingDerivativeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MergerFinancingDerivativeMember_lbl" xml:lang="en-US">Merger Financing Derivative [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ContingentGuaranteeMember" xlink:label="ATCH_ContingentGuaranteeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ContingentGuaranteeMember" xlink:to="ATCH_ContingentGuaranteeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ContingentGuaranteeMember_lbl" xml:lang="en-US">Contingent Guarantee [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebentureDerivativeMember" xlink:label="ATCH_DebentureDerivativeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureDerivativeMember" xlink:to="ATCH_DebentureDerivativeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebentureDerivativeMember_lbl" xml:lang="en-US">Debenture Derivative [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvertibleNoteDerivativeMember" xlink:label="ATCH_ConvertibleNoteDerivativeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNoteDerivativeMember" xlink:to="ATCH_ConvertibleNoteDerivativeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNoteDerivativeMember_lbl" xml:lang="en-US">Convertible Note Derivative [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="us-gaap_StatementBusinessSegmentsAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xml:lang="en-US">Segments [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SingleReportableSegmentMember" xlink:label="ATCH_SingleReportableSegmentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SingleReportableSegmentMember" xlink:to="ATCH_SingleReportableSegmentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SingleReportableSegmentMember_lbl" xml:lang="en-US">Single Reportable Segment [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US">Plan Name [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_IncentivePlanMember" xlink:label="ATCH_IncentivePlanMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncentivePlanMember" xlink:to="ATCH_IncentivePlanMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_IncentivePlanMember_lbl" xml:lang="en-US">Incentive Plan [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EquityAwardAgreementsMember" xlink:label="ATCH_EquityAwardAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityAwardAgreementsMember" xlink:to="ATCH_EquityAwardAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EquityAwardAgreementsMember_lbl" xml:lang="en-US">Equity Award Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TwoThousandTwentyFiveStockOptionsMember" xlink:label="ATCH_TwoThousandTwentyFiveStockOptionsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveStockOptionsMember" xlink:to="ATCH_TwoThousandTwentyFiveStockOptionsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TwoThousandTwentyFiveStockOptionsMember_lbl" xml:lang="en-US">Two Thousand Twenty Five Stock Options [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockOptionsMember" xlink:label="ATCH_StockOptionsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockOptionsMember" xlink:to="ATCH_StockOptionsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockOptionsMember_lbl" xml:lang="en-US">Stock Options [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MessrsSchaibleMember" xlink:label="ATCH_MessrsSchaibleMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MessrsSchaibleMember" xlink:to="ATCH_MessrsSchaibleMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MessrsSchaibleMember_lbl" xml:lang="en-US">Messrs Schaible [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US">Restricted Stock [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RidenhourMember" xlink:label="ATCH_RidenhourMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RidenhourMember" xlink:to="ATCH_RidenhourMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RidenhourMember_lbl" xml:lang="en-US">Ridenhour [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebentureAgreementMember" xlink:label="ATCH_DebentureAgreementMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureAgreementMember" xlink:to="ATCH_DebentureAgreementMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebentureAgreementMember_lbl" xml:lang="en-US">Debenture Agreement [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract" xlink:label="dei_CoverAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CoverAbstract_lbl" xml:lang="en-US">Cover [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType" xlink:label="dei_DocumentType" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentType_lbl" xml:lang="en-US">Document Type</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US">Amendment Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentDescription" xlink:label="dei_AmendmentDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentDescription" xlink:to="dei_AmendmentDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentDescription_lbl" xml:lang="en-US">Amendment Description</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentRegistrationStatement" xlink:label="dei_DocumentRegistrationStatement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentRegistrationStatement" xlink:to="dei_DocumentRegistrationStatement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentRegistrationStatement_lbl" xml:lang="en-US">Document Registration Statement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentAnnualReport" xlink:label="dei_DocumentAnnualReport" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentAnnualReport" xlink:to="dei_DocumentAnnualReport_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentAnnualReport_lbl" xml:lang="en-US">Document Annual Report</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentQuarterlyReport" xlink:label="dei_DocumentQuarterlyReport" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentQuarterlyReport" xlink:to="dei_DocumentQuarterlyReport_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentQuarterlyReport_lbl" xml:lang="en-US">Document Quarterly Report</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport" xlink:label="dei_DocumentTransitionReport" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentTransitionReport_lbl" xml:lang="en-US">Document Transition Report</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentShellCompanyReport" xlink:label="dei_DocumentShellCompanyReport" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentShellCompanyReport" xlink:to="dei_DocumentShellCompanyReport_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentShellCompanyReport_lbl" xml:lang="en-US">Document Shell Company Report</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentShellCompanyEventDate" xlink:label="dei_DocumentShellCompanyEventDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentShellCompanyEventDate" xlink:to="dei_DocumentShellCompanyEventDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentShellCompanyEventDate_lbl" xml:lang="en-US">Document Shell Company Event Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodStartDate" xlink:label="dei_DocumentPeriodStartDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodStartDate" xlink:to="dei_DocumentPeriodStartDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodStartDate_lbl" xml:lang="en-US">Document Period Start Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US">Document Period End Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US">Document Fiscal Period Focus</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US">Document Fiscal Year Focus</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US">Current Fiscal Year End Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber" xlink:label="dei_EntityFileNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFileNumber_lbl" xml:lang="en-US">Entity File Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US">Entity Registrant Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US">Entity Central Index Key</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityPrimarySicNumber" xlink:label="dei_EntityPrimarySicNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPrimarySicNumber" xlink:to="dei_EntityPrimarySicNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityPrimarySicNumber_lbl" xml:lang="en-US">Entity Primary SIC Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber" xlink:label="dei_EntityTaxIdentificationNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xml:lang="en-US">Entity Tax Identification Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="dei_EntityIncorporationStateCountryCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1" xlink:label="dei_EntityAddressAddressLine1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine1_lbl" xml:lang="en-US">Entity Address, Address Line One</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine2" xlink:label="dei_EntityAddressAddressLine2" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine2" xlink:to="dei_EntityAddressAddressLine2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine2_lbl" xml:lang="en-US">Entity Address, Address Line Two</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine3" xlink:label="dei_EntityAddressAddressLine3" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine3" xlink:to="dei_EntityAddressAddressLine3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine3_lbl" xml:lang="en-US">Entity Address, Address Line Three</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown" xlink:label="dei_EntityAddressCityOrTown" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressCityOrTown_lbl" xml:lang="en-US">Entity Address, City or Town</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince" xlink:label="dei_EntityAddressStateOrProvince" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressStateOrProvince_lbl" xml:lang="en-US">Entity Address, State or Province</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCountry" xlink:label="dei_EntityAddressCountry" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCountry" xlink:to="dei_EntityAddressCountry_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressCountry_lbl" xml:lang="en-US">Entity Address, Country</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode" xlink:label="dei_EntityAddressPostalZipCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressPostalZipCode_lbl" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CountryRegion" xlink:label="dei_CountryRegion" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CountryRegion" xlink:to="dei_CountryRegion_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CountryRegion_lbl" xml:lang="en-US">Country Region</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode" xlink:label="dei_CityAreaCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CityAreaCode_lbl" xml:lang="en-US">City Area Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LocalPhoneNumber_lbl" xml:lang="en-US">Local Phone Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Extension" xlink:label="dei_Extension" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Extension" xlink:to="dei_Extension_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Extension_lbl" xml:lang="en-US">Extension</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications" xlink:label="dei_WrittenCommunications" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_WrittenCommunications_lbl" xml:lang="en-US">Written Communications</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial" xlink:label="dei_SolicitingMaterial" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SolicitingMaterial_lbl" xml:lang="en-US">Soliciting Material</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer" xlink:label="dei_PreCommencementTenderOffer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_PreCommencementTenderOffer_lbl" xml:lang="en-US">Pre-commencement Tender Offer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer" xlink:label="dei_PreCommencementIssuerTenderOffer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xml:lang="en-US">Pre-commencement Issuer Tender Offer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle" xlink:label="dei_Security12bTitle" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Security12bTitle_lbl" xml:lang="en-US">Title of 12(b) Security</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="dei_NoTradingSymbolFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_NoTradingSymbolFlag_lbl" xml:lang="en-US">No Trading Symbol Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US">Trading Symbol</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName" xlink:label="dei_SecurityExchangeName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SecurityExchangeName_lbl" xml:lang="en-US">Security Exchange Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12gTitle" xlink:label="dei_Security12gTitle" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12gTitle" xlink:to="dei_Security12gTitle_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Security12gTitle_lbl" xml:lang="en-US">Title of 12(g) Security</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityReportingObligation" xlink:label="dei_SecurityReportingObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityReportingObligation" xlink:to="dei_SecurityReportingObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SecurityReportingObligation_lbl" xml:lang="en-US">Security Reporting Obligation</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AnnualInformationForm" xlink:label="dei_AnnualInformationForm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AnnualInformationForm" xlink:to="dei_AnnualInformationForm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AnnualInformationForm_lbl" xml:lang="en-US">Annual Information Form</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AuditedAnnualFinancialStatements" xlink:label="dei_AuditedAnnualFinancialStatements" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditedAnnualFinancialStatements" xlink:to="dei_AuditedAnnualFinancialStatements_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditedAnnualFinancialStatements_lbl" xml:lang="en-US">Audited Annual Financial Statements</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="dei_EntityWellKnownSeasonedIssuer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityVoluntaryFilers" xlink:label="dei_EntityVoluntaryFilers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityVoluntaryFilers_lbl" xml:lang="en-US">Entity Voluntary Filers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US">Entity Current Reporting Status</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xml:lang="en-US">Entity Interactive Data Current</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US">Entity Filer Category</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US">Entity Small Business</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US">Entity Emerging Growth Company</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityExTransitionPeriod" xlink:label="dei_EntityExTransitionPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityExTransitionPeriod" xlink:to="dei_EntityExTransitionPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityExTransitionPeriod_lbl" xml:lang="en-US">Elected Not To Use the Extended Transition Period</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentAccountingStandard" xlink:label="dei_DocumentAccountingStandard" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentAccountingStandard" xlink:to="dei_DocumentAccountingStandard_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentAccountingStandard_lbl" xml:lang="en-US">Document Accounting Standard</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_OtherReportingStandardItemNumber" xlink:label="dei_OtherReportingStandardItemNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_OtherReportingStandardItemNumber" xlink:to="dei_OtherReportingStandardItemNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_OtherReportingStandardItemNumber_lbl" xml:lang="en-US">Other Reporting Standard Item Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany" xlink:label="dei_EntityShellCompany" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityShellCompany_lbl" xml:lang="en-US">Entity Shell Company</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityPublicFloat" xlink:label="dei_EntityPublicFloat" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPublicFloat" xlink:to="dei_EntityPublicFloat_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityPublicFloat_lbl" xml:lang="en-US">Entity Public Float</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityBankruptcyProceedingsReportingCurrent" xlink:label="dei_EntityBankruptcyProceedingsReportingCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityBankruptcyProceedingsReportingCurrent" xlink:to="dei_EntityBankruptcyProceedingsReportingCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityBankruptcyProceedingsReportingCurrent_lbl" xml:lang="en-US">Entity Bankruptcy Proceedings, Reporting Current</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentsIncorporatedByReferenceTextBlock" xlink:label="dei_DocumentsIncorporatedByReferenceTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentsIncorporatedByReferenceTextBlock" xlink:to="dei_DocumentsIncorporatedByReferenceTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentsIncorporatedByReferenceTextBlock_lbl" xml:lang="en-US">Documents Incorporated by Reference [Text Block]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_IcfrAuditorAttestationFlag" xlink:label="dei_IcfrAuditorAttestationFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_IcfrAuditorAttestationFlag" xlink:to="dei_IcfrAuditorAttestationFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_IcfrAuditorAttestationFlag_lbl" xml:lang="en-US">ICFR Auditor Attestation Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFinStmtErrorCorrectionFlag" xlink:label="dei_DocumentFinStmtErrorCorrectionFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFinStmtErrorCorrectionFlag" xlink:to="dei_DocumentFinStmtErrorCorrectionFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFinStmtErrorCorrectionFlag_lbl" xml:lang="en-US">Document Financial Statement Error Correction [Flag]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityListingParValuePerShare" xlink:label="dei_EntityListingParValuePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityListingParValuePerShare" xlink:to="dei_EntityListingParValuePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityListingParValuePerShare_lbl" xml:lang="en-US">Entity Listing, Par Value Per Share</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AuditorFirmId" xlink:label="dei_AuditorFirmId" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorFirmId" xlink:to="dei_AuditorFirmId_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorFirmId_lbl" xml:lang="en-US">Auditor Firm ID</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AuditorOpinionTextBlock" xlink:label="dei_AuditorOpinionTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorOpinionTextBlock" xlink:to="dei_AuditorOpinionTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorOpinionTextBlock_lbl" xml:lang="en-US">Auditor Opinion [Text Block]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AuditorName" xlink:label="dei_AuditorName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorName" xlink:to="dei_AuditorName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorName_lbl" xml:lang="en-US">Auditor Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AuditorLocation" xlink:label="dei_AuditorLocation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorLocation" xlink:to="dei_AuditorLocation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorLocation_lbl" xml:lang="en-US">Auditor Location</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="us-gaap_ScheduleOfShortTermDebtTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShortTermDebtTable" xlink:to="us-gaap_ScheduleOfShortTermDebtTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShortTermDebtTable_lbl" xml:lang="en-US">Short-Term Debt [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="us-gaap_ShortTermDebtLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtLineItems" xlink:to="us-gaap_ShortTermDebtLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtLineItems_lbl" xml:lang="en-US">Short-Term Debt [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">ASSETS</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashEquivalentsAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashEquivalentsAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashSegregatedUnderOtherRegulations" xlink:label="us-gaap_CashSegregatedUnderOtherRegulations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashSegregatedUnderOtherRegulations" xlink:to="us-gaap_CashSegregatedUnderOtherRegulations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashSegregatedUnderOtherRegulations_lbl" xml:lang="en-US">Cash segregated - customers</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers" xlink:label="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers" xlink:to="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers_lbl" xml:lang="en-US">Cash segregated - PAB</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations" xlink:label="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations" xlink:to="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_lbl" xml:lang="en-US">Receivables - broker-dealers and clearing organizations</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesFromCustomers" xlink:label="us-gaap_ReceivablesFromCustomers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesFromCustomers" xlink:to="us-gaap_ReceivablesFromCustomers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesFromCustomers_lbl" xml:lang="en-US">Receivables - customers, net of allowance for credit losses of $401,128</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivablesNetCurrent" xlink:label="us-gaap_OtherReceivablesNetCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherReceivablesNetCurrent" xlink:to="us-gaap_OtherReceivablesNetCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherReceivablesNetCurrent_lbl" xml:lang="en-US">Other receivables</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="us-gaap_PrepaidExpenseCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseCurrent" xlink:to="us-gaap_PrepaidExpenseCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xml:lang="en-US">Prepaids</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradingSecuritiesDebt" xlink:label="us-gaap_TradingSecuritiesDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradingSecuritiesDebt" xlink:to="us-gaap_TradingSecuritiesDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xml:lang="en-US">Trading securities, market value, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US">Total Current Assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US">Operating lease right to use lease asset</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xml:lang="en-US">Customer list, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US">Goodwill</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FiniteLivedIntangibleAssets" xlink:label="ATCH_FiniteLivedIntangibleAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FiniteLivedIntangibleAssets" xlink:to="ATCH_FiniteLivedIntangibleAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FiniteLivedIntangibleAssets_lbl" xml:lang="en-US">Developed technology, net</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CommercialBankAcquisitionDeposit" xlink:label="ATCH_CommercialBankAcquisitionDeposit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommercialBankAcquisitionDeposit" xlink:to="ATCH_CommercialBankAcquisitionDeposit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CommercialBankAcquisitionDeposit_lbl" xml:lang="en-US">Bank acquisition deposit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositAssets" xlink:label="us-gaap_DepositAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositAssets" xlink:to="us-gaap_DepositAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepositAssets_lbl" xml:lang="en-US">Cash deposits - broker-dealers and clearing organizations</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US">Other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">TOTAL ASSETS</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US">LIABILITIES AND STOCKHOLDERS&#8217; EQUITY (DEFICIT)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US">LIABILITIES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_PayablesToCustomers" xlink:label="srt_PayablesToCustomers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_PayablesToCustomers" xlink:to="srt_PayablesToCustomers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_PayablesToCustomers_lbl" xml:lang="en-US">Payables to customers</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent" xlink:label="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent" xlink:to="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent_lbl" xml:lang="en-US">Accounts and payables to officers/directors</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_lbl" xml:lang="en-US">Accounts payable and accrued expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_PayablesToBrokerDealersAndClearingOrganizations" xlink:label="srt_PayablesToBrokerDealersAndClearingOrganizations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_PayablesToBrokerDealersAndClearingOrganizations" xlink:to="srt_PayablesToBrokerDealersAndClearingOrganizations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_PayablesToBrokerDealersAndClearingOrganizations_lbl" xml:lang="en-US">Payables - broker-dealers and clearing organizations</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CommissionsPayrollAndPayrollTaxesCurrent" xlink:label="ATCH_CommissionsPayrollAndPayrollTaxesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommissionsPayrollAndPayrollTaxesCurrent" xlink:to="ATCH_CommissionsPayrollAndPayrollTaxesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CommissionsPayrollAndPayrollTaxesCurrent_lbl" xml:lang="en-US">Commissions, payroll and payroll taxes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xml:lang="en-US">Current portion of lease liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableCurrent" xlink:label="us-gaap_NotesPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableCurrent" xlink:to="us-gaap_NotesPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayableCurrent_lbl" xml:lang="en-US">Promissory notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LongTermMergerFinancingCurrent" xlink:label="ATCH_LongTermMergerFinancingCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermMergerFinancingCurrent" xlink:to="ATCH_LongTermMergerFinancingCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LongTermMergerFinancingCurrent_lbl" xml:lang="en-US">Current portion of long-term merger financing, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="us-gaap_DerivativeLiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US">Derivative liability - convertible notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MergerFinancingPayable" xlink:label="ATCH_MergerFinancingPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingPayable" xlink:to="ATCH_MergerFinancingPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MergerFinancingPayable_lbl" xml:lang="en-US">Merger financing payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:label="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:to="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_lbl" xml:lang="en-US">Debenture &#8211; derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharePurchaseCommitmentAmountCurrent" xlink:label="ATCH_SharePurchaseCommitmentAmountCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharePurchaseCommitmentAmountCurrent" xlink:to="ATCH_SharePurchaseCommitmentAmountCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharePurchaseCommitmentAmountCurrent_lbl" xml:lang="en-US">Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebentureCurrent" xlink:label="ATCH_DebentureCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureCurrent" xlink:to="ATCH_DebentureCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebentureCurrent_lbl" xml:lang="en-US">Debenture</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SubscriptionAgreementCurrent" xlink:label="ATCH_SubscriptionAgreementCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionAgreementCurrent" xlink:to="ATCH_SubscriptionAgreementCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SubscriptionAgreementCurrent_lbl" xml:lang="en-US">Subscription agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPayableCurrent" xlink:label="ATCH_StockPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPayableCurrent" xlink:to="ATCH_StockPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPayableCurrent_lbl" xml:lang="en-US">Stock payable- related party</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesAndExciseTaxPayableCurrent" xlink:label="us-gaap_SalesAndExciseTaxPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesAndExciseTaxPayableCurrent" xlink:to="us-gaap_SalesAndExciseTaxPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SalesAndExciseTaxPayableCurrent_lbl" xml:lang="en-US">Excise tax payable</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US">Total Current Liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualCarryingValueNoncurrent" xlink:label="us-gaap_LossContingencyAccrualCarryingValueNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyAccrualCarryingValueNoncurrent" xlink:to="us-gaap_LossContingencyAccrualCarryingValueNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LossContingencyAccrualCarryingValueNoncurrent_lbl" xml:lang="en-US">Accrued contingent liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredLongTermDebt" xlink:label="us-gaap_SecuredLongTermDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredLongTermDebt" xlink:to="us-gaap_SecuredLongTermDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuredLongTermDebt_lbl" xml:lang="en-US">Long-term secured convertible note, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtNoncurrent" xlink:label="us-gaap_ConvertibleDebtNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtNoncurrent" xlink:to="us-gaap_ConvertibleDebtNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleDebtNoncurrent_lbl" xml:lang="en-US">Long-term convertible notes, net</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantLiability" xlink:label="ATCH_WarrantLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiability" xlink:to="ATCH_WarrantLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantLiability_lbl" xml:lang="en-US">Warrant Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeLiabilityWarrants" xlink:label="ATCH_DerivativeLiabilityWarrants" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityWarrants" xlink:to="ATCH_DerivativeLiabilityWarrants_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeLiabilityWarrants_lbl" xml:lang="en-US">Derivative liability - warrants</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnoutLiabilitiesNoncurrent" xlink:label="ATCH_EarnoutLiabilitiesNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilitiesNoncurrent" xlink:to="ATCH_EarnoutLiabilitiesNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnoutLiabilitiesNoncurrent_lbl" xml:lang="en-US">Earnout - liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xml:lang="en-US">Deferred income tax liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubordinatedLongTermDebt" xlink:label="us-gaap_SubordinatedLongTermDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubordinatedLongTermDebt" xlink:to="us-gaap_SubordinatedLongTermDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubordinatedLongTermDebt_lbl" xml:lang="en-US">Subordinated borrowings</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TradingAccountDepositNoncurrent" xlink:label="ATCH_TradingAccountDepositNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TradingAccountDepositNoncurrent" xlink:to="ATCH_TradingAccountDepositNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TradingAccountDepositNoncurrent_lbl" xml:lang="en-US">Trading account deposit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xml:lang="en-US">Long-term lease liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">TOTAL LIABILITIES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments and Contingencies (Note 11)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US">STOCKHOLDERS&#8217; EQUITY (DEFICIT)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred stock, $0.0001 par value; 25,000,000 shares authorized; none issued or outstanding at June 30, 2026 and 2025</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common stock, $0.0001 par value; 500,000,000 shares authorized; 150,337,774 and 40,165,603 shares issued and outstanding at June 30, 2026 and 2025, respectively</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable" xlink:label="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable" xlink:to="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable_lbl" xml:lang="en-US">Stock subscription receivable</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional paid-in-capital</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US">Accumulated Deficit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">TOTAL STOCKHOLDERS&#8217; EQUITY (DEFICIT)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">TOTAL LIABILITIES AND STOCKHOLDERS&#8217; EQUITY (DEFICIT)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US">Allowance for credit losses</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred stock, par value</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US">Preferred stock, shares authorized</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred stock, shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US">Preferred stock, shares outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Common stock, par value</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US">Common stock, shares authorized</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Common stock, shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common stock, shares outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US">Income Statement [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">REVENUES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BrokerageCommissionsRevenue" xlink:label="us-gaap_BrokerageCommissionsRevenue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BrokerageCommissionsRevenue" xlink:to="us-gaap_BrokerageCommissionsRevenue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BrokerageCommissionsRevenue_lbl" xml:lang="en-US">Commissions</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RevenueFromVettingProcessingFees" xlink:label="ATCH_RevenueFromVettingProcessingFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromVettingProcessingFees" xlink:to="ATCH_RevenueFromVettingProcessingFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RevenueFromVettingProcessingFees_lbl" xml:lang="en-US">Vetting fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RevenueFromClearanceFees" xlink:label="ATCH_RevenueFromClearanceFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromClearanceFees" xlink:to="ATCH_RevenueFromClearanceFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RevenueFromClearanceFees_lbl" xml:lang="en-US">Clearing fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RevenueNotFromStockLocateFees" xlink:label="ATCH_RevenueNotFromStockLocateFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueNotFromStockLocateFees" xlink:to="ATCH_RevenueNotFromStockLocateFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RevenueNotFromStockLocateFees_lbl" xml:lang="en-US">Stock locate fees</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradingGainsLosses" xlink:label="us-gaap_TradingGainsLosses" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradingGainsLosses" xlink:to="us-gaap_TradingGainsLosses_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TradingGainsLosses_lbl" xml:lang="en-US">Net gain/(loss) on firm trading accounts</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueNotFromContractWithCustomerOther" xlink:label="us-gaap_RevenueNotFromContractWithCustomerOther" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueNotFromContractWithCustomerOther" xlink:to="us-gaap_RevenueNotFromContractWithCustomerOther_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueNotFromContractWithCustomerOther_lbl" xml:lang="en-US">Other revenue</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">TOTAL REVENUES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US">EXPENSES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="us-gaap_LaborAndRelatedExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LaborAndRelatedExpense" xlink:to="us-gaap_LaborAndRelatedExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LaborAndRelatedExpense_lbl" xml:lang="en-US">Compensation, payroll taxes and benefits</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InformationTechnologyAndDataProcessing" xlink:label="us-gaap_InformationTechnologyAndDataProcessing" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InformationTechnologyAndDataProcessing" xlink:to="us-gaap_InformationTechnologyAndDataProcessing_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InformationTechnologyAndDataProcessing_lbl" xml:lang="en-US">Data processing and clearing costs</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US">Regulatory, professional fees and related expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US">Stock compensation</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Communication" xlink:label="us-gaap_Communication" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Communication" xlink:to="us-gaap_Communication_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Communication_lbl" xml:lang="en-US">Communications</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OccupancyNet" xlink:label="us-gaap_OccupancyNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OccupancyNet" xlink:to="us-gaap_OccupancyNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OccupancyNet_lbl" xml:lang="en-US">Occupancy and equipment</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TransferFees" xlink:label="ATCH_TransferFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransferFees" xlink:to="ATCH_TransferFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TransferFees_lbl" xml:lang="en-US">Transfer fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_BankCharges" xlink:label="ATCH_BankCharges" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BankCharges" xlink:to="ATCH_BankCharges_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_BankCharges_lbl" xml:lang="en-US">Bank charges</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="us-gaap_ProvisionForDoubtfulAccounts" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForDoubtfulAccounts" xlink:to="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xml:lang="en-US">Bad debt</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US">Intangible assets amortization</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOperatingIncomeExpenseNet" xlink:to="us-gaap_OtherOperatingIncomeExpenseNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet_lbl" xml:lang="en-US">Other</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">TOTAL EXPENSES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">LOSS FROM OPERATIONS</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US">OTHER INCOME/(EXPENSE)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeInterest" xlink:to="us-gaap_InvestmentIncomeInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xml:lang="en-US">Interest income</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="us-gaap_FairValueAdjustmentOfWarrants" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAdjustmentOfWarrants" xlink:to="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xml:lang="en-US">Change in fair value of warrant liability derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:label="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:to="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet_lbl" xml:lang="en-US">Change in fair value of convertible note derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" xlink:label="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" xlink:to="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_lbl" xml:lang="en-US">Change in fair value of long-term and short-term note derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee" xlink:label="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee" xlink:to="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_lbl" xml:lang="en-US">Change in fair value of contingent guarantee</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnSecuredConvertibleNote" xlink:label="ATCH_DerivativeGainLossOnSecuredConvertibleNote" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnSecuredConvertibleNote" xlink:to="ATCH_DerivativeGainLossOnSecuredConvertibleNote_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_DerivativeGainLossOnSecuredConvertibleNote_lbl" xml:lang="en-US">Change in fair value of secured convertible note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnFairValueOfMergerFinancing" xlink:label="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing" xlink:to="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing_lbl" xml:lang="en-US">Change in fair value of merger financing</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability" xlink:label="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability" xlink:to="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability_lbl" xml:lang="en-US">Change in fair value of earnout liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfWinstonStrawnAgreement" xlink:label="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement" xlink:to="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_lbl" xml:lang="en-US">Change in fair value of Winston &amp; Strawn agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmbeddedDerivativeGainLossOnDebenture" xlink:label="ATCH_EmbeddedDerivativeGainLossOnDebenture" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmbeddedDerivativeGainLossOnDebenture" xlink:to="ATCH_EmbeddedDerivativeGainLossOnDebenture_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmbeddedDerivativeGainLossOnDebenture_lbl" xml:lang="en-US">Change in fair value of debenture derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfStockPayable" xlink:label="ATCH_FairValueAdjustmentOfStockPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfStockPayable" xlink:to="ATCH_FairValueAdjustmentOfStockPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfStockPayable_lbl" xml:lang="en-US">Change in fair value of stock payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount" xlink:label="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount" xlink:to="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_lbl" xml:lang="en-US">Change in fair value of Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LossOnSettlementOnWinstonStrawnAgreement" xlink:label="ATCH_LossOnSettlementOnWinstonStrawnAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossOnSettlementOnWinstonStrawnAgreement" xlink:to="ATCH_LossOnSettlementOnWinstonStrawnAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_LossOnSettlementOnWinstonStrawnAgreement_lbl" xml:lang="en-US">Loss on settlement on Winston &amp; Strawn agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating" xlink:label="us-gaap_InterestExpenseNonoperating" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseNonoperating" xlink:to="us-gaap_InterestExpenseNonoperating_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xml:lang="en-US">Interest expense</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US">TOTAL OTHER INCOME</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xml:lang="en-US">NET INCOME BEFORE INCOME TAXES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Income tax benefit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">NET INCOME</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Basic weighted average shares outstanding, Common stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US">Diluted weighted average shares outstanding, Common stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Basic net income per share, Common Stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US">Diluted net income per share, Common Stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US">Statement [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US">Statement [Line Items]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquity_2_lbl" xml:lang="en-US">Balance &#8212; June 30, 2025</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CommonStockSharesIssued_2_lbl" xml:lang="en-US">Balance, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xml:lang="en-US">Shares issued as conversion in principle on convertible notes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US">Shares issued as conversion in principle on convertible notes, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueSettledVendorObligations" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations" xlink:to="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations_lbl" xml:lang="en-US">Shares issued to settled vendor obligations</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations_lbl" xml:lang="en-US">Shares issued to settled vendor obligations, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueOther" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueOther" xlink:to="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xml:lang="en-US">Shares issued under stock promotion agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesOther" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesOther" xlink:to="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xml:lang="en-US">Shares issued under stock promotion agreement, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xml:lang="en-US">Common stock issued to for consulting services</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xml:lang="en-US">Common stock issued to for consulting services, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Shares issued under Tau agreement settle through June 30, 2025</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Shares issued under tau agreement settle through June 30, 2025, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueCommitmentFees" xlink:label="ATCH_StockIssuedDuringPeriodValueCommitmentFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueCommitmentFees" xlink:to="ATCH_StockIssuedDuringPeriodValueCommitmentFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueCommitmentFees_lbl" xml:lang="en-US">Commitment fee shares settled under the Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesCommitmentFees" xlink:label="ATCH_StockIssuedDuringPeriodSharesCommitmentFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesCommitmentFees" xlink:to="ATCH_StockIssuedDuringPeriodSharesCommitmentFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesCommitmentFees_lbl" xml:lang="en-US">Commitment fee shares settled under the tau agreement, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:label="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:to="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets_lbl" xml:lang="en-US">Shares issued as purchase consideration for developed technology</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:label="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:to="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets_lbl" xml:lang="en-US">Shares issued as purchase consideration for developed technology, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:to="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xml:lang="en-US">Shares issued as deposit for purchase of Commercial Bank</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:to="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions_lbl" xml:lang="en-US">Shares issued as deposit for purchase of commercial bank, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal" xlink:to="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal_lbl" xml:lang="en-US">Shares transferred by related parties as settlement for Company obligations under various financial instruments see Note 8</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:label="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:to="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed_lbl" xml:lang="en-US">Shares issued for shares transferred by related party as repayment of shares transferred to cover Company obligations as noted above net of contributed capital for debt assumed (see Note 8)</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:label="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:to="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed_lbl" xml:lang="en-US">Shares issued for shares transferred by related party as repayment of shares transferred to cover Company obligations as noted above net of contributed capital for debt assumed (see Note 8), shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueSettlementOfDues" xlink:label="ATCH_StockIssuedDuringPeriodValueSettlementOfDues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettlementOfDues" xlink:to="ATCH_StockIssuedDuringPeriodValueSettlementOfDues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueSettlementOfDues_lbl" xml:lang="en-US">Shares issued to related party as settlement for $803,860 in related party payable.</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesSettlementOfDues" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues_lbl" xml:lang="en-US">Shares issued to related party as settlement for $803,860 in related party payable, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt" xlink:label="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt" xlink:to="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt_lbl" xml:lang="en-US">Shares issued to as additional consideration for delayed payment on merger financing notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt" xlink:label="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt" xlink:to="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt_lbl" xml:lang="en-US">Shares issued to as additional consideration for delayed payment on merger financing notes, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueReverseStockSplits" xlink:label="ATCH_StockIssuedDuringPeriodValueReverseStockSplits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueReverseStockSplits" xlink:to="ATCH_StockIssuedDuringPeriodValueReverseStockSplits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueReverseStockSplits_lbl" xml:lang="en-US">Rounding up for fractional shares in 1:60 reverse stock split</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits" xlink:label="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits" xlink:to="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits_lbl" xml:lang="en-US">Rounding up for fractional shares in 1:60 reverse stock split, shares</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_2_lbl" xml:lang="en-US">Net income</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:label="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement_lbl" xml:lang="en-US">Shares issued under Software as a Service License Agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:label="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement_lbl" xml:lang="en-US">Shares issued under Software as a Service License Agreement, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueSettledVendorObligation" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation" xlink:to="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation_lbl" xml:lang="en-US">Shares issued to settled vendor invoice</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation_lbl" xml:lang="en-US">Shares issued to settled vendor invoice, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement" xlink:label="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement_lbl" xml:lang="en-US">Shares issued under Equity SPA, net of offering cost of $696,902 attributed to Equity</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement" xlink:label="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement_lbl" xml:lang="en-US">Shares issued under Equity SPA, net of offering cost, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability" xlink:label="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability" xlink:to="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability_lbl" xml:lang="en-US">Shares issued in non-cash exercise of Warrant Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability" xlink:label="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability" xlink:to="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability_lbl" xml:lang="en-US">Shares issued in non-cash exercise of warrant liability, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement" xlink:label="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement" xlink:to="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement_lbl" xml:lang="en-US">Shares issued to Winston &amp; Strawn as partial payment in settlement agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement" xlink:label="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement" xlink:to="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement_lbl" xml:lang="en-US">Shares issued to Winston &amp; Strawn as partial payment in settlement agreement, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Vested portion of stock based compensation</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions" xlink:label="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions" xlink:to="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions_lbl" xml:lang="en-US">Reversal of excise tax related to prior shareholder redemptions</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquity_3_lbl" xml:lang="en-US">Balance &#8212; June 30, 2026</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CommonStockSharesIssued_3_lbl" xml:lang="en-US">Balance, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionOriginalDebtAmount1" xlink:label="us-gaap_DebtConversionOriginalDebtAmount1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionOriginalDebtAmount1" xlink:to="us-gaap_DebtConversionOriginalDebtAmount1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionOriginalDebtAmount1_lbl" xml:lang="en-US">Conversion amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US">Settlement for related party payable</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpenseOfferingCost" xlink:label="us-gaap_NoninterestExpenseOfferingCost" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestExpenseOfferingCost" xlink:to="us-gaap_NoninterestExpenseOfferingCost_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoninterestExpenseOfferingCost_lbl" xml:lang="en-US">Net of offering cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Operating Activities:</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLoss_3_lbl" xml:lang="en-US">Net income (loss)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAdjustmentOfWarrants" xlink:to="us-gaap_FairValueAdjustmentOfWarrants_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_2_lbl" xml:lang="en-US">Change in fair value, warrant liability derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:label="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:to="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_lbl" xml:lang="en-US">Change in fair value, convertible note derivative</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" xlink:to="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_2_lbl" xml:lang="en-US">Change in fair value, long-term and short-term note derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfContingentGuarantee" xlink:label="ATCH_FairValueAdjustmentOfContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfContingentGuarantee" xlink:to="ATCH_FairValueAdjustmentOfContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfContingentGuarantee_lbl" xml:lang="en-US">Change in fair value, contingent guarantee</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmbeddedDerivativeGainLossOnDebenture" xlink:to="ATCH_EmbeddedDerivativeGainLossOnDebenture_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EmbeddedDerivativeGainLossOnDebenture_2_lbl" xml:lang="en-US">Change in fair value of debenture derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote" xlink:label="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote" xlink:to="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote_lbl" xml:lang="en-US">Change in fair value of secured convertible note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfSellersConvertibleNotes" xlink:label="ATCH_FairValueAdjustmentOfSellersConvertibleNotes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSellersConvertibleNotes" xlink:to="ATCH_FairValueAdjustmentOfSellersConvertibleNotes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfSellersConvertibleNotes_lbl" xml:lang="en-US">Change in fair value, WDCO sellers convertible notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfEarnoutLiability" xlink:label="ATCH_FairValueAdjustmentOfEarnoutLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfEarnoutLiability" xlink:to="ATCH_FairValueAdjustmentOfEarnoutLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueAdjustmentOfEarnoutLiability_lbl" xml:lang="en-US">Change in fair value, earnout liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfSubscriptionAgreement" xlink:label="ATCH_FairValueAdjustmentOfSubscriptionAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSubscriptionAgreement" xlink:to="ATCH_FairValueAdjustmentOfSubscriptionAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueAdjustmentOfSubscriptionAgreement_lbl" xml:lang="en-US">Change in fair value, subscription agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueAdjustmentOfStockPayables" xlink:label="ATCH_FairValueAdjustmentOfStockPayables" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfStockPayables" xlink:to="ATCH_FairValueAdjustmentOfStockPayables_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_FairValueAdjustmentOfStockPayables_lbl" xml:lang="en-US">Change in fair value, stock payable</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount" xlink:to="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_2_lbl" xml:lang="en-US">Change in fair value, Tau agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossOnSettlementOnWinstonStrawnAgreement" xlink:to="ATCH_LossOnSettlementOnWinstonStrawnAgreement_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LossOnSettlementOnWinstonStrawnAgreement_2_lbl" xml:lang="en-US">Loss on settlement on Winston &amp; Strawn agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PaidInKindLateFeesToSellers" xlink:label="ATCH_PaidInKindLateFeesToSellers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PaidInKindLateFeesToSellers" xlink:to="ATCH_PaidInKindLateFeesToSellers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PaidInKindLateFeesToSellers_lbl" xml:lang="en-US">Fee on sellers notes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt" xlink:label="us-gaap_InterestExpenseDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseDebt" xlink:to="us-gaap_InterestExpenseDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseDebt_lbl" xml:lang="en-US">Interest expense on convertible notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TransactionCostsAttributedToWarrantLiability" xlink:label="ATCH_TransactionCostsAttributedToWarrantLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransactionCostsAttributedToWarrantLiability" xlink:to="ATCH_TransactionCostsAttributedToWarrantLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TransactionCostsAttributedToWarrantLiability_lbl" xml:lang="en-US">Transaction costs attributed to Warrant Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Stock based compensation</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConsultingExpensePaidWithStock" xlink:label="ATCH_ConsultingExpensePaidWithStock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConsultingExpensePaidWithStock" xlink:to="ATCH_ConsultingExpensePaidWithStock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConsultingExpensePaidWithStock_lbl" xml:lang="en-US">Consulting expense paid with stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="us-gaap_OtherNoncashIncomeExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoncashIncomeExpense" xlink:to="us-gaap_OtherNoncashIncomeExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OtherNoncashIncomeExpense_lbl" xml:lang="en-US">Other non-cash (gain) loss</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Depreciation_lbl" xml:lang="en-US">Depreciation expense</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AmortizationOfIntangibleAssets_2_lbl" xml:lang="en-US">Amortization of intangibles</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForDoubtfulAccounts" xlink:to="us-gaap_ProvisionForDoubtfulAccounts_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_2_lbl" xml:lang="en-US">Bad debt expense</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense" xlink:to="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_lbl" xml:lang="en-US">Amortization of right of use asset</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxLiability" xlink:label="ATCH_DeferredTaxLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiability" xlink:to="ATCH_DeferredTaxLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxLiability_lbl" xml:lang="en-US">Deferred tax liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInBrokerageReceivables" xlink:label="us-gaap_IncreaseDecreaseInBrokerageReceivables" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInBrokerageReceivables" xlink:to="us-gaap_IncreaseDecreaseInBrokerageReceivables_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInBrokerageReceivables_lbl" xml:lang="en-US">Receivables from brokers &amp; dealers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US">Receivables from customers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherReceivables" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherReceivables" xlink:to="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">Receivables from others</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Advances and Prepaid expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDepositOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInDepositOtherAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDepositOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInDepositOtherAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInDepositOtherAssets_lbl" xml:lang="en-US">Cash deposits with clearing organization &amp; other B/Ds</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPayablesToCustomers" xlink:label="us-gaap_IncreaseDecreaseInPayablesToCustomers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPayablesToCustomers" xlink:to="us-gaap_IncreaseDecreaseInPayablesToCustomers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInPayablesToCustomers_lbl" xml:lang="en-US">Payables to customers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDueToRelatedParties" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedParties" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueToRelatedParties" xlink:to="us-gaap_IncreaseDecreaseInDueToRelatedParties_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedParties_lbl" xml:lang="en-US">Payables to officers &amp; directors</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPayablesToBrokerDealers" xlink:label="us-gaap_IncreaseDecreaseInPayablesToBrokerDealers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPayablesToBrokerDealers" xlink:to="us-gaap_IncreaseDecreaseInPayablesToBrokerDealers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPayablesToBrokerDealers_lbl" xml:lang="en-US">Payable to brokers &amp; dealers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US">Accounts payable and accrued expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" xlink:label="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" xlink:to="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable_lbl" xml:lang="en-US">Commissions and payroll taxes payable</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability" xlink:label="us-gaap_IncreaseDecreaseInOperatingLeaseLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingLeaseLiability" xlink:to="us-gaap_IncreaseDecreaseInOperatingLeaseLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingLeaseLiability_lbl" xml:lang="en-US">Lease liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_IncreaseDecreaseInTradingDeposits" xlink:label="ATCH_IncreaseDecreaseInTradingDeposits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncreaseDecreaseInTradingDeposits" xlink:to="ATCH_IncreaseDecreaseInTradingDeposits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_IncreaseDecreaseInTradingDeposits_lbl" xml:lang="en-US">Trading deposits</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net cash provided by (used in) operating activities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Investing Activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireOtherInvestments" xlink:label="us-gaap_PaymentsToAcquireOtherInvestments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireOtherInvestments" xlink:to="us-gaap_PaymentsToAcquireOtherInvestments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireOtherInvestments_lbl" xml:lang="en-US">Cash paid for purchase of Pacsquare</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherPaymentsToAcquireBusinesses" xlink:label="us-gaap_OtherPaymentsToAcquireBusinesses" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPaymentsToAcquireBusinesses" xlink:to="us-gaap_OtherPaymentsToAcquireBusinesses_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OtherPaymentsToAcquireBusinesses_lbl" xml:lang="en-US">Cash paid for bank acquisition deposit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net cash provided by (used in) investing activities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Financing Activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from stock issuance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:to="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl" xml:lang="en-US">Proceeds from Equity SPA</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentOfFinancingAndStockIssuanceCosts" xlink:label="us-gaap_PaymentOfFinancingAndStockIssuanceCosts" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentOfFinancingAndStockIssuanceCosts" xlink:to="us-gaap_PaymentOfFinancingAndStockIssuanceCosts_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentOfFinancingAndStockIssuanceCosts_lbl" xml:lang="en-US">Transaction cost paid for Equity SPA</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSecuredNotesPayable" xlink:label="us-gaap_ProceedsFromSecuredNotesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSecuredNotesPayable" xlink:to="us-gaap_ProceedsFromSecuredNotesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSecuredNotesPayable_lbl" xml:lang="en-US">Proceeds from Secured Convertible Note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RepaymentsOfSecurityConvertibleNotes" xlink:label="ATCH_RepaymentsOfSecurityConvertibleNotes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RepaymentsOfSecurityConvertibleNotes" xlink:to="ATCH_RepaymentsOfSecurityConvertibleNotes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_RepaymentsOfSecurityConvertibleNotes_lbl" xml:lang="en-US">Transaction cost paid for Secured Convertible Note</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromConvertibleDebt" xlink:label="us-gaap_ProceedsFromConvertibleDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromConvertibleDebt" xlink:to="us-gaap_ProceedsFromConvertibleDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromConvertibleDebt_lbl" xml:lang="en-US">Proceeds from Convertible Notes, net of transaction cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfConvertibleDebt" xlink:label="us-gaap_RepaymentsOfConvertibleDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfConvertibleDebt" xlink:to="us-gaap_RepaymentsOfConvertibleDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfConvertibleDebt_lbl" xml:lang="en-US">Payment on Convertible Notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ProceedsFromIssuanceOfDebenture" xlink:label="ATCH_ProceedsFromIssuanceOfDebenture" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ProceedsFromIssuanceOfDebenture" xlink:to="ATCH_ProceedsFromIssuanceOfDebenture_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ProceedsFromIssuanceOfDebenture_lbl" xml:lang="en-US">Proceeds from debenture, net of transaction cost</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ProceedsFromNonInterestBearingAdvances" xlink:label="ATCH_ProceedsFromNonInterestBearingAdvances" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ProceedsFromNonInterestBearingAdvances" xlink:to="ATCH_ProceedsFromNonInterestBearingAdvances_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ProceedsFromNonInterestBearingAdvances_lbl" xml:lang="en-US">Proceeds from third party advances</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PaymentOnWinstonStrawnSettlementAgreement" xlink:label="ATCH_PaymentOnWinstonStrawnSettlementAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PaymentOnWinstonStrawnSettlementAgreement" xlink:to="ATCH_PaymentOnWinstonStrawnSettlementAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_PaymentOnWinstonStrawnSettlementAgreement_lbl" xml:lang="en-US">Payment on Winston &amp; Strawn settlement agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfSubordinatedDebt" xlink:label="us-gaap_RepaymentsOfSubordinatedDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfSubordinatedDebt" xlink:to="us-gaap_RepaymentsOfSubordinatedDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfSubordinatedDebt_lbl" xml:lang="en-US">Repayment on subordinated debt</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfNotesPayable" xlink:label="us-gaap_RepaymentsOfNotesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfNotesPayable" xlink:to="us-gaap_RepaymentsOfNotesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xml:lang="en-US">Repayment of promissory note</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net cash provided by (used in) financing activities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US">Net Change in Cash</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Cash &#8211; Beginning</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2_lbl" xml:lang="en-US">Cash &#8211; Ending</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xml:lang="en-US">Supplementary cash flow information:</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPaidNet" xlink:label="us-gaap_InterestPaidNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US">Cash paid for interest</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="us-gaap_IncomeTaxesPaidNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xml:lang="en-US">Cash paid for income taxes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:to="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xml:lang="en-US">Supplemental disclosure of non-cash investing and financing activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability" xlink:label="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability" xlink:to="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability_lbl" xml:lang="en-US">Decrease in goodwill due to change in deferred tax liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount" xlink:label="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount" xlink:to="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_lbl" xml:lang="en-US">Shares issued under Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation" xlink:label="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation" xlink:to="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation_lbl" xml:lang="en-US">Value of shares transferred by related parties to settle obligation</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:to="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xml:lang="en-US">Shares issued for conversion of principal and interest on promissory note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable" xlink:label="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable" xlink:to="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable_lbl" xml:lang="en-US">Shares issued to related party for settlement of accounts payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesIssuedForCommercialBankAcquisitionExtension" xlink:label="ATCH_SharesIssuedForCommercialBankAcquisitionExtension" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForCommercialBankAcquisitionExtension" xlink:to="ATCH_SharesIssuedForCommercialBankAcquisitionExtension_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesIssuedForCommercialBankAcquisitionExtension_lbl" xml:lang="en-US">Shares issued for commercial bank acquisition extension</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfDerivativeIncludedInMergerFinancing" xlink:label="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing" xlink:to="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing_lbl" xml:lang="en-US">Initial value of derivative included in merger financing</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssued1" xlink:label="us-gaap_StockIssued1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssued1" xlink:to="us-gaap_StockIssued1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssued1_lbl" xml:lang="en-US">Shares issued for stock payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PromissoryNoteIssuedUnderInsurancePremium" xlink:label="ATCH_PromissoryNoteIssuedUnderInsurancePremium" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PromissoryNoteIssuedUnderInsurancePremium" xlink:to="ATCH_PromissoryNoteIssuedUnderInsurancePremium_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PromissoryNoteIssuedUnderInsurancePremium_lbl" xml:lang="en-US">Promissory note issued under insurance premium</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PrepaidStockBasedCompensation" xlink:label="ATCH_PrepaidStockBasedCompensation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PrepaidStockBasedCompensation" xlink:to="ATCH_PrepaidStockBasedCompensation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PrepaidStockBasedCompensation_lbl" xml:lang="en-US">Prepaid stock based compensation</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesIssuedToPurchasePacsquare" xlink:label="ATCH_SharesIssuedToPurchasePacsquare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedToPurchasePacsquare" xlink:to="ATCH_SharesIssuedToPurchasePacsquare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesIssuedToPurchasePacsquare_lbl" xml:lang="en-US">Shares issued to purchase Pacsquare</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ReceivableFromSharesAdvancedUnderTauAgreement" xlink:label="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement" xlink:to="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement_lbl" xml:lang="en-US">Receivable from shares advanced under Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfDerivativeIncludedInDebenture" xlink:label="ATCH_InitialValueOfDerivativeIncludedInDebenture" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInDebenture" xlink:to="ATCH_InitialValueOfDerivativeIncludedInDebenture_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfDerivativeIncludedInDebenture_lbl" xml:lang="en-US">Initial value of derivative included in debenture</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfDerivativeIncludedInConvertibleNote" xlink:label="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote" xlink:to="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote_lbl" xml:lang="en-US">Initial value of derivative included in convertible note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ReversalOfExciseTax" xlink:label="ATCH_ReversalOfExciseTax" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ReversalOfExciseTax" xlink:to="ATCH_ReversalOfExciseTax_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ReversalOfExciseTax_lbl" xml:lang="en-US">Reversal of excise tax</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvertibleNotesTransferredToEquitySpa" xlink:label="ATCH_ConvertibleNotesTransferredToEquitySpa" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesTransferredToEquitySpa" xlink:to="ATCH_ConvertibleNotesTransferredToEquitySpa_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNotesTransferredToEquitySpa_lbl" xml:lang="en-US">Convertible Notes transferred to Equity SPA</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa" xlink:to="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa_lbl" xml:lang="en-US">Initial value of warrant issued as transaction cost under Equity SPA</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesIssuedForWinstonStrawnSettlementAgreement" xlink:label="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement" xlink:to="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement_lbl" xml:lang="en-US">Shares issued for Winston &amp; Strawn settlement agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability" xlink:label="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability" xlink:to="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability_lbl" xml:lang="en-US">Shares issued for non-cash exercise of Warrant Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities" xlink:label="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities" xlink:to="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities_lbl" xml:lang="en-US">Right-of-use assets obtained in exchange for new operating lease liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PvpTable" xlink:label="ecd_PvpTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PvpTable" xlink:to="ecd_PvpTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PvpTable_lbl" xml:lang="en-US">Pay vs Performance Disclosure [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ExecutiveCategoryAxis" xlink:label="ecd_ExecutiveCategoryAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ExecutiveCategoryAxis" xlink:to="ecd_ExecutiveCategoryAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ExecutiveCategoryAxis_lbl" xml:lang="en-US">Executive Category [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_IndividualAxis" xlink:label="ecd_IndividualAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_IndividualAxis" xlink:to="ecd_IndividualAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_IndividualAxis_lbl" xml:lang="en-US">Individual [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AdjToCompAxis" xlink:label="ecd_AdjToCompAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AdjToCompAxis" xlink:to="ecd_AdjToCompAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AdjToCompAxis_lbl" xml:lang="en-US">Adjustment to Compensation [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_MeasureAxis" xlink:label="ecd_MeasureAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_MeasureAxis" xlink:to="ecd_MeasureAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_MeasureAxis_lbl" xml:lang="en-US">Measure [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PvpTableTextBlock" xlink:label="ecd_PvpTableTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PvpTableTextBlock" xlink:to="ecd_PvpTableTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PvpTableTextBlock_lbl" xml:lang="en-US">Pay vs Performance Disclosure, Table</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CoSelectedMeasureName" xlink:label="ecd_CoSelectedMeasureName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CoSelectedMeasureName" xlink:to="ecd_CoSelectedMeasureName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CoSelectedMeasureName_lbl" xml:lang="en-US">Company Selected Measure Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NamedExecutiveOfficersFnTextBlock" xlink:label="ecd_NamedExecutiveOfficersFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NamedExecutiveOfficersFnTextBlock" xlink:to="ecd_NamedExecutiveOfficersFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NamedExecutiveOfficersFnTextBlock_lbl" xml:lang="en-US">Named Executive Officers, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PeerGroupIssuersFnTextBlock" xlink:label="ecd_PeerGroupIssuersFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PeerGroupIssuersFnTextBlock" xlink:to="ecd_PeerGroupIssuersFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PeerGroupIssuersFnTextBlock_lbl" xml:lang="en-US">Peer Group Issuers, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ChangedPeerGroupFnTextBlock" xlink:label="ecd_ChangedPeerGroupFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ChangedPeerGroupFnTextBlock" xlink:to="ecd_ChangedPeerGroupFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ChangedPeerGroupFnTextBlock_lbl" xml:lang="en-US">Changed Peer Group, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PeoTotalCompAmt" xlink:label="ecd_PeoTotalCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PeoTotalCompAmt" xlink:to="ecd_PeoTotalCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PeoTotalCompAmt_lbl" xml:lang="en-US">PEO Total Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PeoActuallyPaidCompAmt" xlink:label="ecd_PeoActuallyPaidCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PeoActuallyPaidCompAmt" xlink:to="ecd_PeoActuallyPaidCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PeoActuallyPaidCompAmt_lbl" xml:lang="en-US">PEO Actually Paid Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AdjToPeoCompFnTextBlock" xlink:label="ecd_AdjToPeoCompFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AdjToPeoCompFnTextBlock" xlink:to="ecd_AdjToPeoCompFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AdjToPeoCompFnTextBlock_lbl" xml:lang="en-US">Adjustment To PEO Compensation, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NonPeoNeoAvgTotalCompAmt" xlink:label="ecd_NonPeoNeoAvgTotalCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NonPeoNeoAvgTotalCompAmt" xlink:to="ecd_NonPeoNeoAvgTotalCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NonPeoNeoAvgTotalCompAmt_lbl" xml:lang="en-US">Non-PEO NEO Average Total Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:label="ecd_NonPeoNeoAvgCompActuallyPaidAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:to="ecd_NonPeoNeoAvgCompActuallyPaidAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NonPeoNeoAvgCompActuallyPaidAmt_lbl" xml:lang="en-US">Non-PEO NEO Average Compensation Actually Paid Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:label="ecd_AdjToNonPeoNeoCompFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:to="ecd_AdjToNonPeoNeoCompFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AdjToNonPeoNeoCompFnTextBlock_lbl" xml:lang="en-US">Adjustment to Non-PEO NEO Compensation Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:label="ecd_EquityValuationAssumptionDifferenceFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:to="ecd_EquityValuationAssumptionDifferenceFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_EquityValuationAssumptionDifferenceFnTextBlock_lbl" xml:lang="en-US">Equity Valuation Assumption Difference, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:label="ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:to="ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_lbl" xml:lang="en-US">Compensation Actually Paid vs. Total Shareholder Return</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:label="ecd_CompActuallyPaidVsNetIncomeTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:to="ecd_CompActuallyPaidVsNetIncomeTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CompActuallyPaidVsNetIncomeTextBlock_lbl" xml:lang="en-US">Compensation Actually Paid vs. Net Income</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:label="ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:to="ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_lbl" xml:lang="en-US">Compensation Actually Paid vs. Company Selected Measure</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:label="ecd_TotalShareholderRtnVsPeerGroupTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:to="ecd_TotalShareholderRtnVsPeerGroupTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TotalShareholderRtnVsPeerGroupTextBlock_lbl" xml:lang="en-US">Total Shareholder Return Vs Peer Group</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:label="ecd_CompActuallyPaidVsOtherMeasureTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:to="ecd_CompActuallyPaidVsOtherMeasureTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CompActuallyPaidVsOtherMeasureTextBlock_lbl" xml:lang="en-US">Compensation Actually Paid vs. Other Measure</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TabularListTableTextBlock" xlink:label="ecd_TabularListTableTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TabularListTableTextBlock" xlink:to="ecd_TabularListTableTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TabularListTableTextBlock_lbl" xml:lang="en-US">Tabular List, Table</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TotalShareholderRtnAmt" xlink:label="ecd_TotalShareholderRtnAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TotalShareholderRtnAmt" xlink:to="ecd_TotalShareholderRtnAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TotalShareholderRtnAmt_lbl" xml:lang="en-US">Total Shareholder Return Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PeerGroupTotalShareholderRtnAmt" xlink:label="ecd_PeerGroupTotalShareholderRtnAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PeerGroupTotalShareholderRtnAmt" xlink:to="ecd_PeerGroupTotalShareholderRtnAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PeerGroupTotalShareholderRtnAmt_lbl" xml:lang="en-US">Peer Group Total Shareholder Return Amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_4_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_4_lbl" xml:lang="en-US">Net Income (Loss)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_CoSelectedMeasureAmt" xlink:label="ecd_CoSelectedMeasureAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_CoSelectedMeasureAmt" xlink:to="ecd_CoSelectedMeasureAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_CoSelectedMeasureAmt_lbl" xml:lang="en-US">Company Selected Measure Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_OtherPerfMeasureAmt" xlink:label="ecd_OtherPerfMeasureAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_OtherPerfMeasureAmt" xlink:to="ecd_OtherPerfMeasureAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_OtherPerfMeasureAmt_lbl" xml:lang="en-US">Other Performance Measure, Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AdjToCompAmt" xlink:label="ecd_AdjToCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AdjToCompAmt" xlink:to="ecd_AdjToCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AdjToCompAmt_lbl" xml:lang="en-US">Adjustment to Compensation, Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PeoName" xlink:label="ecd_PeoName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PeoName" xlink:to="ecd_PeoName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PeoName_lbl" xml:lang="en-US">PEO Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_MeasureName" xlink:label="ecd_MeasureName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_MeasureName" xlink:to="ecd_MeasureName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_MeasureName_lbl" xml:lang="en-US">Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NonGaapMeasureDescriptionTextBlock" xlink:label="ecd_NonGaapMeasureDescriptionTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NonGaapMeasureDescriptionTextBlock" xlink:to="ecd_NonGaapMeasureDescriptionTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NonGaapMeasureDescriptionTextBlock_lbl" xml:lang="en-US">Non-GAAP Measure Description</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_Additional402vDisclosureTextBlock" xlink:label="ecd_Additional402vDisclosureTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_Additional402vDisclosureTextBlock" xlink:to="ecd_Additional402vDisclosureTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_Additional402vDisclosureTextBlock_lbl" xml:lang="en-US">Additional 402(v) Disclosure</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_PnsnBnftsAdjFnTextBlock" xlink:label="ecd_PnsnBnftsAdjFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_PnsnBnftsAdjFnTextBlock" xlink:to="ecd_PnsnBnftsAdjFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_PnsnBnftsAdjFnTextBlock_lbl" xml:lang="en-US">Pension Benefits Adjustments, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_EqtyAwrdsAdjFnTextBlock" xlink:label="ecd_EqtyAwrdsAdjFnTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_EqtyAwrdsAdjFnTextBlock" xlink:to="ecd_EqtyAwrdsAdjFnTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_EqtyAwrdsAdjFnTextBlock_lbl" xml:lang="en-US">Equity Awards Adjustments, Footnote</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ErrCompRecoveryTable" xlink:label="ecd_ErrCompRecoveryTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ErrCompRecoveryTable" xlink:to="ecd_ErrCompRecoveryTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ErrCompRecoveryTable_lbl" xml:lang="en-US">Erroneously Awarded Compensation Recovery [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_RestatementDateAxis" xlink:label="ecd_RestatementDateAxis" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_RestatementDateAxis" xlink:to="ecd_RestatementDateAxis_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_RestatementDateAxis_lbl" xml:lang="en-US">Restatement Determination Date [Axis]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_RestatementDeterminationDate" xlink:label="ecd_RestatementDeterminationDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_RestatementDeterminationDate" xlink:to="ecd_RestatementDeterminationDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_RestatementDeterminationDate_lbl" xml:lang="en-US">Restatement Determination Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AggtErrCompAmt" xlink:label="ecd_AggtErrCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AggtErrCompAmt" xlink:to="ecd_AggtErrCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AggtErrCompAmt_lbl" xml:lang="en-US">Aggregate Erroneous Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ErrCompAnalysisTextBlock" xlink:label="ecd_ErrCompAnalysisTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ErrCompAnalysisTextBlock" xlink:to="ecd_ErrCompAnalysisTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ErrCompAnalysisTextBlock_lbl" xml:lang="en-US">Erroneous Compensation Analysis</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:label="ecd_StkPrcOrTsrEstimationMethodTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:to="ecd_StkPrcOrTsrEstimationMethodTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_StkPrcOrTsrEstimationMethodTextBlock_lbl" xml:lang="en-US">Stock Price or TSR Estimation Method</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_OutstandingAggtErrCompAmt" xlink:label="ecd_OutstandingAggtErrCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_OutstandingAggtErrCompAmt" xlink:to="ecd_OutstandingAggtErrCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_OutstandingAggtErrCompAmt_lbl" xml:lang="en-US">Outstanding Aggregate Erroneous Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:label="ecd_AggtErrCompNotYetDeterminedTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:to="ecd_AggtErrCompNotYetDeterminedTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AggtErrCompNotYetDeterminedTextBlock_lbl" xml:lang="en-US">Aggregate Erroneous Compensation Not Yet Determined</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ForgoneRecoveryIndName" xlink:label="ecd_ForgoneRecoveryIndName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ForgoneRecoveryIndName" xlink:to="ecd_ForgoneRecoveryIndName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ecd_ForgoneRecoveryIndName_lbl" xml:lang="en-US">Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:label="ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:to="ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_lbl" xml:lang="en-US">Forgone Recovery due to Expense of Enforcement, Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:label="ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:to="ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt_lbl" xml:lang="en-US">Forgone Recovery due to Violation of Home Country Law, Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:label="ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:to="ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_lbl" xml:lang="en-US">Forgone Recovery due to Disqualification of Tax Benefits, Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:label="ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:to="ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock_lbl" xml:lang="en-US">Forgone Recovery, Explanation of Impracticability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_OutstandingRecoveryIndName" xlink:label="ecd_OutstandingRecoveryIndName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_OutstandingRecoveryIndName" xlink:to="ecd_OutstandingRecoveryIndName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ecd_OutstandingRecoveryIndName_lbl" xml:lang="en-US">Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_OutstandingRecoveryCompAmt" xlink:label="ecd_OutstandingRecoveryCompAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_OutstandingRecoveryCompAmt" xlink:to="ecd_OutstandingRecoveryCompAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_OutstandingRecoveryCompAmt_lbl" xml:lang="en-US">Compensation Amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:label="ecd_RestatementDoesNotRequireRecoveryTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:to="ecd_RestatementDoesNotRequireRecoveryTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_RestatementDoesNotRequireRecoveryTextBlock_lbl" xml:lang="en-US">Restatement does not require Recovery</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardsCloseToMnpiDiscTable" xlink:label="ecd_AwardsCloseToMnpiDiscTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardsCloseToMnpiDiscTable" xlink:to="ecd_AwardsCloseToMnpiDiscTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardsCloseToMnpiDiscTable_lbl" xml:lang="en-US">Awards Close in Time to MNPI Disclosures [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardTmgMnpiDiscTextBlock" xlink:label="ecd_AwardTmgMnpiDiscTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardTmgMnpiDiscTextBlock" xlink:to="ecd_AwardTmgMnpiDiscTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardTmgMnpiDiscTextBlock_lbl" xml:lang="en-US">Award Timing MNPI Disclosure</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardTmgMethodTextBlock" xlink:label="ecd_AwardTmgMethodTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardTmgMethodTextBlock" xlink:to="ecd_AwardTmgMethodTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardTmgMethodTextBlock_lbl" xml:lang="en-US">Award Timing Method</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardTmgPredtrmndFlag" xlink:label="ecd_AwardTmgPredtrmndFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardTmgPredtrmndFlag" xlink:to="ecd_AwardTmgPredtrmndFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardTmgPredtrmndFlag_lbl" xml:lang="en-US">Award Timing Predetermined</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardTmgMnpiCnsdrdFlag" xlink:label="ecd_AwardTmgMnpiCnsdrdFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardTmgMnpiCnsdrdFlag" xlink:to="ecd_AwardTmgMnpiCnsdrdFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardTmgMnpiCnsdrdFlag_lbl" xml:lang="en-US">Award Timing MNPI Considered</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:label="ecd_AwardTmgHowMnpiCnsdrdTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:to="ecd_AwardTmgHowMnpiCnsdrdTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardTmgHowMnpiCnsdrdTextBlock_lbl" xml:lang="en-US">Award Timing, How MNPI Considered</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_MnpiDiscTimedForCompValFlag" xlink:label="ecd_MnpiDiscTimedForCompValFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_MnpiDiscTimedForCompValFlag" xlink:to="ecd_MnpiDiscTimedForCompValFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_MnpiDiscTimedForCompValFlag_lbl" xml:lang="en-US">MNPI Disclosure Timed for Compensation Value</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:label="ecd_AwardsCloseToMnpiDiscTableTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:to="ecd_AwardsCloseToMnpiDiscTableTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardsCloseToMnpiDiscTableTextBlock_lbl" xml:lang="en-US">Awards Close in Time to MNPI Disclosures, Table</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardsCloseToMnpiDiscIndName" xlink:label="ecd_AwardsCloseToMnpiDiscIndName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardsCloseToMnpiDiscIndName" xlink:to="ecd_AwardsCloseToMnpiDiscIndName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ecd_AwardsCloseToMnpiDiscIndName_lbl" xml:lang="en-US">Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardUndrlygSecuritiesAmt" xlink:label="ecd_AwardUndrlygSecuritiesAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardUndrlygSecuritiesAmt" xlink:to="ecd_AwardUndrlygSecuritiesAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardUndrlygSecuritiesAmt_lbl" xml:lang="en-US">Underlying Securities</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardExrcPrice" xlink:label="ecd_AwardExrcPrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardExrcPrice" xlink:to="ecd_AwardExrcPrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardExrcPrice_lbl" xml:lang="en-US">Exercise Price</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AwardGrantDateFairValue" xlink:label="ecd_AwardGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_AwardGrantDateFairValue" xlink:to="ecd_AwardGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardGrantDateFairValue_lbl" xml:lang="en-US">Fair Value as of Grant Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_UndrlygSecurityMktPriceChngPct" xlink:label="ecd_UndrlygSecurityMktPriceChngPct" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_UndrlygSecurityMktPriceChngPct" xlink:to="ecd_UndrlygSecurityMktPriceChngPct_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_UndrlygSecurityMktPriceChngPct_lbl" xml:lang="en-US">Underlying Security Market Price Change</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_InsiderTradingArrLineItems" xlink:label="ecd_InsiderTradingArrLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_InsiderTradingArrLineItems" xlink:to="ecd_InsiderTradingArrLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_InsiderTradingArrLineItems_lbl" xml:lang="en-US">Insider Trading Arrangements [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_MtrlTermsOfTrdArrTextBlock" xlink:label="ecd_MtrlTermsOfTrdArrTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_MtrlTermsOfTrdArrTextBlock" xlink:to="ecd_MtrlTermsOfTrdArrTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_MtrlTermsOfTrdArrTextBlock_lbl" xml:lang="en-US">Material Terms of Trading Arrangement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrIndName" xlink:label="ecd_TrdArrIndName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrIndName" xlink:to="ecd_TrdArrIndName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ecd_TrdArrIndName_lbl" xml:lang="en-US">Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrIndTitle" xlink:label="ecd_TrdArrIndTitle" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrIndTitle" xlink:to="ecd_TrdArrIndTitle_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrIndTitle_lbl" xml:lang="en-US">Title</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_Rule10b51ArrAdoptedFlag" xlink:label="ecd_Rule10b51ArrAdoptedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_Rule10b51ArrAdoptedFlag" xlink:to="ecd_Rule10b51ArrAdoptedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_Rule10b51ArrAdoptedFlag_lbl" xml:lang="en-US">Rule 10b5-1 Arrangement Adopted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NonRule10b51ArrAdoptedFlag" xlink:label="ecd_NonRule10b51ArrAdoptedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NonRule10b51ArrAdoptedFlag" xlink:to="ecd_NonRule10b51ArrAdoptedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NonRule10b51ArrAdoptedFlag_lbl" xml:lang="en-US">Non-Rule 10b5-1 Arrangement Adopted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrAdoptionDate" xlink:label="ecd_TrdArrAdoptionDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrAdoptionDate" xlink:to="ecd_TrdArrAdoptionDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrAdoptionDate_lbl" xml:lang="en-US">Adoption Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_Rule10b51ArrTrmntdFlag" xlink:label="ecd_Rule10b51ArrTrmntdFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_Rule10b51ArrTrmntdFlag" xlink:to="ecd_Rule10b51ArrTrmntdFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_Rule10b51ArrTrmntdFlag_lbl" xml:lang="en-US">Rule 10b5-1 Arrangement Terminated</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_NonRule10b51ArrTrmntdFlag" xlink:label="ecd_NonRule10b51ArrTrmntdFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_NonRule10b51ArrTrmntdFlag" xlink:to="ecd_NonRule10b51ArrTrmntdFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_NonRule10b51ArrTrmntdFlag_lbl" xml:lang="en-US">Non-Rule 10b5-1 Arrangement Terminated</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrTerminationDate" xlink:label="ecd_TrdArrTerminationDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrTerminationDate" xlink:to="ecd_TrdArrTerminationDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrTerminationDate_lbl" xml:lang="en-US">Termination Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrExpirationDate" xlink:label="ecd_TrdArrExpirationDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrExpirationDate" xlink:to="ecd_TrdArrExpirationDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrExpirationDate_lbl" xml:lang="en-US">Expiration Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrDuration" xlink:label="ecd_TrdArrDuration" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrDuration" xlink:to="ecd_TrdArrDuration_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrDuration_lbl" xml:lang="en-US">Arrangement Duration</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_TrdArrSecuritiesAggAvailAmt" xlink:label="ecd_TrdArrSecuritiesAggAvailAmt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_TrdArrSecuritiesAggAvailAmt" xlink:to="ecd_TrdArrSecuritiesAggAvailAmt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_TrdArrSecuritiesAggAvailAmt_lbl" xml:lang="en-US">Aggregate Available</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NoInsiderTradingFlag" xlink:label="ATCH_NoInsiderTradingFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NoInsiderTradingFlag" xlink:to="ATCH_NoInsiderTradingFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NoInsiderTradingFlag_lbl" xml:lang="en-US">No Insider Trading Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_InsiderTradingPoliciesProcLineItems" xlink:label="ecd_InsiderTradingPoliciesProcLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_InsiderTradingPoliciesProcLineItems" xlink:to="ecd_InsiderTradingPoliciesProcLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_InsiderTradingPoliciesProcLineItems_lbl" xml:lang="en-US">Insider Trading Policies and Procedures [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:label="ecd_InsiderTrdPoliciesProcAdoptedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:to="ecd_InsiderTrdPoliciesProcAdoptedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_InsiderTrdPoliciesProcAdoptedFlag_lbl" xml:lang="en-US">Insider Trading Policies and Procedures Adopted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:label="ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:to="ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_lbl" xml:lang="en-US">Insider Trading Policies and Procedures Not Adopted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2026/cyd-2026.xsd#cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract" xlink:label="cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract" xlink:to="cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract_lbl" xml:lang="en-US">Cybersecurity Risk Management, Strategy, and Governance [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2026/cyd-2026.xsd#cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock" xlink:label="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock" xlink:to="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock_lbl" xml:lang="en-US">Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2026/cyd-2026.xsd#cyd_CybersecurityRiskManagementProcessesIntegratedFlag" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cyd_CybersecurityRiskManagementProcessesIntegratedFlag" xlink:to="cyd_CybersecurityRiskManagementProcessesIntegratedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedFlag_lbl" xml:lang="en-US">Cybersecurity Risk Management Processes Integrated [Flag]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2026/cyd-2026.xsd#cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock" xlink:to="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock_lbl" xml:lang="en-US">Cybersecurity Risk Management Processes Integrated [Text Block]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2026/cyd-2026.xsd#cyd_CybersecurityRiskManagementThirdPartyEngagedFlag" xlink:label="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag" xlink:to="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag_lbl" xml:lang="en-US">Cybersecurity Risk Management Third Party Engaged [Flag]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xml:lang="en-US">SCHEDULE OF FAIR VALUE MEASUREMENT INPUTS AND VALUATION</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xml:lang="en-US">SCHEDULE OF CHANGES IN THE FAIR VALUE</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US">SCHEDULE OF REVENUE AND OPERATING INCOME LOSS</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable" xlink:label="us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable" xlink:to="us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable_lbl" xml:lang="en-US">Collaborative Arrangement and Arrangement Other than Collaborative [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems" xlink:label="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems" xlink:to="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems_lbl" xml:lang="en-US">Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US">Aggregate principal amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromNotesPayable" xlink:label="us-gaap_ProceedsFromNotesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromNotesPayable" xlink:to="us-gaap_ProceedsFromNotesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xml:lang="en-US">Purchase price of notes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US">Interest rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US">Maturity date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US">Exercise price of warrants</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_UnitsIssuedProceeds" xlink:label="ATCH_UnitsIssuedProceeds" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitsIssuedProceeds" xlink:to="ATCH_UnitsIssuedProceeds_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_UnitsIssuedProceeds_lbl" xml:lang="en-US">Aggregate sale price</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:to="us-gaap_DebtConversionConvertedInstrumentAmount1_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_2_lbl" xml:lang="en-US">Shares issued for conversion</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NumberOfSharesPerUnitIssued" xlink:label="ATCH_NumberOfSharesPerUnitIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesPerUnitIssued" xlink:to="ATCH_NumberOfSharesPerUnitIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NumberOfSharesPerUnitIssued_lbl" xml:lang="en-US">Number of shares per unit issued</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NumberOfWarrantsPerUnitIssued" xlink:label="ATCH_NumberOfWarrantsPerUnitIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfWarrantsPerUnitIssued" xlink:to="ATCH_NumberOfWarrantsPerUnitIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NumberOfWarrantsPerUnitIssued_lbl" xml:lang="en-US">Number of warrants per unit issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US">Number of shares called by each warrant</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US">Share price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_GrossProceedsFromIssuanceOfDebtAndUnits" xlink:label="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits" xlink:to="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits_lbl" xml:lang="en-US">Gross proceeds from issuance of debt</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_2_lbl" xml:lang="en-US">Basic weighted average shares outstanding</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2_lbl" xml:lang="en-US">Diluted weighted average shares outstanding</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareBasic_2_lbl" xml:lang="en-US">Basic net income (loss) per share of Common Stock</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareDiluted_2_lbl" xml:lang="en-US">Diluted net income (loss) per share of Common Stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:to="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xml:lang="en-US">Total Convertible Securities Excluded</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares" xlink:label="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares" xlink:to="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares_lbl" xml:lang="en-US">Total contingently issuable shares&#8211; excluded</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US">Total Warrants excluded</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xml:lang="en-US">Property, Plant, and Equipment [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US">Property, Plant, and Equipment [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US">Property, plant and equipment, useful life</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xml:lang="en-US">Intangible assets, net</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ImpairmentCharges" xlink:label="ATCH_ImpairmentCharges" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ImpairmentCharges" xlink:to="ATCH_ImpairmentCharges_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ImpairmentCharges_lbl" xml:lang="en-US">Impairment charges</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFDICInsuredAmount" xlink:label="us-gaap_CashFDICInsuredAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFDICInsuredAmount" xlink:to="us-gaap_CashFDICInsuredAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFDICInsuredAmount_lbl" xml:lang="en-US">Cash, FDIC insured amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashDepositNumberOfFinancialInstitutions" xlink:label="ATCH_CashDepositNumberOfFinancialInstitutions" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashDepositNumberOfFinancialInstitutions" xlink:to="ATCH_CashDepositNumberOfFinancialInstitutions_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashDepositNumberOfFinancialInstitutions_lbl" xml:lang="en-US">Number of financial institutions in cash deposit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashUninsuredAmount" xlink:label="us-gaap_CashUninsuredAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashUninsuredAmount" xlink:to="us-gaap_CashUninsuredAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US">Excess amount of the FDIC limit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable" xlink:label="us-gaap_SubsequentEventTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTable" xlink:to="us-gaap_SubsequentEventTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTable_lbl" xml:lang="en-US">Subsequent Event [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems" xlink:label="us-gaap_SubsequentEventLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventLineItems" xlink:to="us-gaap_SubsequentEventLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xml:lang="en-US">Subsequent Event [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashReserveDepositRequired" xlink:label="ATCH_CashReserveDepositRequired" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositRequired" xlink:to="ATCH_CashReserveDepositRequired_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashReserveDepositRequired_lbl" xml:lang="en-US">Calculated required reserve</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations" xlink:label="us-gaap_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations" xlink:to="us-gaap_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations_lbl" xml:lang="en-US">Cash on deposit in the reserve account</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashReserveDepositInExcessOfAmountRequired" xlink:label="ATCH_CashReserveDepositInExcessOfAmountRequired" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositInExcessOfAmountRequired" xlink:to="ATCH_CashReserveDepositInExcessOfAmountRequired_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashReserveDepositInExcessOfAmountRequired_lbl" xml:lang="en-US">Cash reserve deposit more than amount required</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashReserveDepositWithdrawn" xlink:label="ATCH_CashReserveDepositWithdrawn" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositWithdrawn" xlink:to="ATCH_CashReserveDepositWithdrawn_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashReserveDepositWithdrawn_lbl" xml:lang="en-US">Cash reserve deposit withdrawn</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashReserveDepositRequiredAndMade" xlink:label="us-gaap_CashReserveDepositRequiredAndMade" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashReserveDepositRequiredAndMade" xlink:to="us-gaap_CashReserveDepositRequiredAndMade_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashReserveDepositRequiredAndMade_lbl" xml:lang="en-US">Amount deposited to reserve account in accordance with the rule</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashReserveDepositLessThanAmountRequired" xlink:label="ATCH_CashReserveDepositLessThanAmountRequired" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositLessThanAmountRequired" xlink:to="ATCH_CashReserveDepositLessThanAmountRequired_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_CashReserveDepositLessThanAmountRequired_lbl" xml:lang="en-US">Cash reserve deposit more than amount required</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NetCapital" xlink:label="srt_NetCapital" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_NetCapital" xlink:to="srt_NetCapital_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_NetCapital_lbl" xml:lang="en-US">Net capital</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AlternativeExcessNetCapital" xlink:label="srt_AlternativeExcessNetCapital" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_AlternativeExcessNetCapital" xlink:to="srt_AlternativeExcessNetCapital_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_AlternativeExcessNetCapital_lbl" xml:lang="en-US">Net capital in excess of the minimum required</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CashSegregatedCustomers" xlink:label="ATCH_CashSegregatedCustomers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashSegregatedCustomers" xlink:to="ATCH_CashSegregatedCustomers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_CashSegregatedCustomers_lbl" xml:lang="en-US">Cash segregated - customers</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3_lbl" xml:lang="en-US">Total cash and restricted cash shown in the statement of cash flows.</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsPaidForSecuritiesBorrowedAtCarryingValue" xlink:label="us-gaap_DepositsPaidForSecuritiesBorrowedAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsPaidForSecuritiesBorrowedAtCarryingValue" xlink:to="us-gaap_DepositsPaidForSecuritiesBorrowedAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepositsPaidForSecuritiesBorrowedAtCarryingValue_lbl" xml:lang="en-US">Due from clearing organizations, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesFailedToDeliver" xlink:label="us-gaap_SecuritiesFailedToDeliver" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuritiesFailedToDeliver" xlink:to="us-gaap_SecuritiesFailedToDeliver_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuritiesFailedToDeliver_lbl" xml:lang="en-US">Fails to deliver and receive</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations" xlink:to="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_2_lbl" xml:lang="en-US">Total receivables</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue" xlink:label="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue" xlink:to="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue_lbl" xml:lang="en-US">Due from clearing organizations, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuritiesFailedToReceive" xlink:label="us-gaap_SecuritiesFailedToReceive" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuritiesFailedToReceive" xlink:to="us-gaap_SecuritiesFailedToReceive_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SecuritiesFailedToReceive_lbl" xml:lang="en-US">Fails to deliver and receive</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_PayablesToBrokerDealersAndClearingOrganizations" xlink:to="srt_PayablesToBrokerDealersAndClearingOrganizations_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="srt_PayablesToBrokerDealersAndClearingOrganizations_2_lbl" xml:lang="en-US">Total payables</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization" xlink:label="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization" xlink:to="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization_lbl" xml:lang="en-US">Losses on receivables from broker dealers or clearing organizations</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_BadDebtExpenseAndTradingErrorAdjustments" xlink:label="ATCH_BadDebtExpenseAndTradingErrorAdjustments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BadDebtExpenseAndTradingErrorAdjustments" xlink:to="ATCH_BadDebtExpenseAndTradingErrorAdjustments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_BadDebtExpenseAndTradingErrorAdjustments_lbl" xml:lang="en-US">Bad debt expense and trading error adjustments</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DisclosureLeaseCommitmentsAbstract" xlink:to="ATCH_DisclosureLeaseCommitmentsAbstract_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_DisclosureLeaseCommitmentsAbstract_2_lbl" xml:lang="en-US">Schedule Of Future Minimum Lease Payments</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US">2027</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US">2028</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xml:lang="en-US">2029</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xml:lang="en-US">2030</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Total minimum lease payments</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Less interest factor</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US">Total operating lease liability</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_2_lbl" xml:lang="en-US">Less operating lease liability - current portion</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_2_lbl" xml:lang="en-US">Operating lease liability - long term portion</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DisclosureLeaseCommitmentsAbstract" xlink:to="ATCH_DisclosureLeaseCommitmentsAbstract_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ATCH_DisclosureLeaseCommitmentsAbstract_3_lbl" xml:lang="en-US">Schedule Of Other Information Related To Companys Operating Leases</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_OperatingLeaseRightOfUseAssetBeginningBalance" xlink:label="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance" xlink:to="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance_lbl" xml:lang="en-US">Operating lease ROU Asset - Opening Balance</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability" xlink:label="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability" xlink:to="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability_lbl" xml:lang="en-US">Increase</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DecreaseInOperatingLeaseRightOfUseAsset" xlink:label="ATCH_DecreaseInOperatingLeaseRightOfUseAsset" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DecreaseInOperatingLeaseRightOfUseAsset" xlink:to="ATCH_DecreaseInOperatingLeaseRightOfUseAsset_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DecreaseInOperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US">Decrease</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_OperatingLeaseRightOfUseAssetEndingBalance" xlink:label="ATCH_OperatingLeaseRightOfUseAssetEndingBalance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OperatingLeaseRightOfUseAssetEndingBalance" xlink:to="ATCH_OperatingLeaseRightOfUseAssetEndingBalance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_OperatingLeaseRightOfUseAssetEndingBalance_lbl" xml:lang="en-US">Operating lease ROU Asset - Ending Balance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_3_lbl" xml:lang="en-US">Operating lease liability - Short Term</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_3_lbl" xml:lang="en-US">Operating lease liability - Long Term</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiability_2_lbl" xml:lang="en-US">Operating lease liability - Total</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xml:lang="en-US">Weighted average remaining lease term</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xml:lang="en-US">Weighted average discount rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:to="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xml:lang="en-US">Operating lease renewal term</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRent" xlink:label="us-gaap_PaymentsForRent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRent" xlink:to="us-gaap_PaymentsForRent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRent_lbl" xml:lang="en-US">Rent expense</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xml:lang="en-US">Intangible Asset, Finite-Lived [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xml:lang="en-US">Intangible Asset, Finite-Lived [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xml:lang="en-US">Intangible assets, cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xml:lang="en-US">Intangible assets, accumulated amortization</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsFinitelived" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOfIntangibleAssetsFinitelived" xlink:to="us-gaap_ImpairmentOfIntangibleAssetsFinitelived_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsFinitelived_lbl" xml:lang="en-US">Impairment of assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:to="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl" xml:lang="en-US">Estimated useful life</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xml:lang="en-US">June 30, 2027</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xml:lang="en-US">June 30, 2028</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xml:lang="en-US">June 30, 2029</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xml:lang="en-US">June 30, 2030</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xml:lang="en-US">June 30, 2031</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xml:lang="en-US">Thereafter</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentForAmortization" xlink:label="us-gaap_AdjustmentForAmortization" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentForAmortization" xlink:to="us-gaap_AdjustmentForAmortization_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentForAmortization_lbl" xml:lang="en-US">Amortization expense</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xml:lang="en-US">Related Party Transaction [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionConvertedInstrumentSharesIssued1" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentSharesIssued1" xlink:to="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xml:lang="en-US">Conversion, shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">Interest payable</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_2_lbl" xml:lang="en-US">Debt instrument, interest rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentIncreaseAccruedInterest" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentIncreaseAccruedInterest" xlink:to="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xml:lang="en-US">Accrued amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="us-gaap_OtherLiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xml:lang="en-US">Due to related parties</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xml:lang="en-US">Payable to employees</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Cash" xlink:label="us-gaap_Cash" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Cash_lbl" xml:lang="en-US">Cash</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_UnitsIssuedDuringPeriodValueNewIssues" xlink:label="ATCH_UnitsIssuedDuringPeriodValueNewIssues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitsIssuedDuringPeriodValueNewIssues" xlink:to="ATCH_UnitsIssuedDuringPeriodValueNewIssues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_UnitsIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Units sold</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_2_lbl" xml:lang="en-US">Stock issued for services</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="us-gaap_SharesIssuedPricePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xml:lang="en-US">Sale of stock price per share</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_2_lbl" xml:lang="en-US">Value of stock issued for services</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubordinatedLongTermDebt" xlink:to="us-gaap_SubordinatedLongTermDebt_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SubordinatedLongTermDebt_2_lbl" xml:lang="en-US">Subordinated loan agreements</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionAmountsOfTransaction" xlink:to="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xml:lang="en-US">Related party transaction</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseBorrowings" xlink:label="us-gaap_InterestExpenseBorrowings" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseBorrowings" xlink:to="us-gaap_InterestExpenseBorrowings_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseBorrowings_lbl" xml:lang="en-US">Interest expense associated with the subordinated borrowings</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrent" xlink:label="us-gaap_InterestPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrent_lbl" xml:lang="en-US">Interest payable on loans</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromConvertibleDebt" xlink:to="us-gaap_ProceedsFromConvertibleDebt_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromConvertibleDebt_2_lbl" xml:lang="en-US">Proceeds from convertible notes, net of transaction cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xml:lang="en-US">Debt instrument, conversion price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount" xlink:label="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount" xlink:to="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount_lbl" xml:lang="en-US">Percentage of proceeds raised in excess of threshold amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities" xlink:label="us-gaap_DerivativeLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilities" xlink:to="us-gaap_DerivativeLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilities_lbl" xml:lang="en-US">Derivative issuance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="us-gaap_DeferredFinanceCostsNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsNet" xlink:to="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xml:lang="en-US">Debt issuance costs</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDebtDiscountPremium" xlink:to="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xml:lang="en-US">Amortization of discount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtCurrent" xlink:label="us-gaap_DebtCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtCurrent" xlink:to="us-gaap_DebtCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtCurrent_lbl" xml:lang="en-US">Debt</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_lbl" xml:lang="en-US">Debt instrument, unamortized debt discount premium</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayable" xlink:label="us-gaap_NotesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US">Promissory notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MergerFinancingDerivative" xlink:label="ATCH_MergerFinancingDerivative" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingDerivative" xlink:to="ATCH_MergerFinancingDerivative_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MergerFinancingDerivative_lbl" xml:lang="en-US">Merger financing -derivative</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharePurchaseCommitmentAmountCurrent" xlink:to="ATCH_SharePurchaseCommitmentAmountCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_SharePurchaseCommitmentAmountCurrent_2_lbl" xml:lang="en-US">Tau Agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureCurrent" xlink:to="ATCH_DebentureCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_DebentureCurrent_2_lbl" xml:lang="en-US">Debenture (related party)</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeLiabilityDebenture" xlink:label="ATCH_DerivativeLiabilityDebenture" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityDebenture" xlink:to="ATCH_DerivativeLiabilityDebenture_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeLiabilityDebenture_lbl" xml:lang="en-US">Derivative liability - debenture</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvertibleNoteDerivative" xlink:label="ATCH_ConvertibleNoteDerivative" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNoteDerivative" xlink:to="ATCH_ConvertibleNoteDerivative_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNoteDerivative_lbl" xml:lang="en-US">Convertible note - derivative</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings" xlink:label="us-gaap_ShortTermBorrowings" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermBorrowings" xlink:to="us-gaap_ShortTermBorrowings_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermBorrowings_lbl" xml:lang="en-US">Current portion</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtNoncurrent" xlink:to="us-gaap_ConvertibleDebtNoncurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ConvertibleDebtNoncurrent_2_lbl" xml:lang="en-US">Long-term convertible note Chardan, net</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredLongTermDebt" xlink:to="us-gaap_SecuredLongTermDebt_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SecuredLongTermDebt_2_lbl" xml:lang="en-US">Secured Convertible Note, net</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Long term portion</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_2_lbl" xml:lang="en-US">Stock issued</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtConversionOriginalDebtPrincipalAmount" xlink:label="ATCH_DebtConversionOriginalDebtPrincipalAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtPrincipalAmount" xlink:to="ATCH_DebtConversionOriginalDebtPrincipalAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtConversionOriginalDebtPrincipalAmount_lbl" xml:lang="en-US">Principal amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice" xlink:label="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice" xlink:to="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice_lbl" xml:lang="en-US">Debt instrument convertible conversion rate as percentage of specified trading days volume weighted average share price</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_2_lbl" xml:lang="en-US">Conversion price per share</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtNoncurrent" xlink:to="us-gaap_ConvertibleDebtNoncurrent_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertibleDebtNoncurrent_3_lbl" xml:lang="en-US">Convertible note, balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentIssuedPrincipal" xlink:label="us-gaap_DebtInstrumentIssuedPrincipal" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentIssuedPrincipal" xlink:to="us-gaap_DebtInstrumentIssuedPrincipal_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentIssuedPrincipal_lbl" xml:lang="en-US">Debt instrumental principal amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_3_lbl" xml:lang="en-US">Debt interest rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtCurrent" xlink:label="us-gaap_ConvertibleDebtCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtCurrent" xlink:to="us-gaap_ConvertibleDebtCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleDebtCurrent_lbl" xml:lang="en-US">Convertible debt</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesOther" xlink:to="us-gaap_StockIssuedDuringPeriodSharesOther_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_2_lbl" xml:lang="en-US">Stock issued during the period, other</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtIssuanceCosts" xlink:label="ATCH_DebtIssuanceCosts" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtIssuanceCosts" xlink:to="ATCH_DebtIssuanceCosts_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtIssuanceCosts_lbl" xml:lang="en-US">The amount of expense related to debt issuance costs</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentIncreaseAccruedInterest" xlink:to="us-gaap_DebtInstrumentIncreaseAccruedInterest_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_2_lbl" xml:lang="en-US">Debt instrument, increase, accrued interest</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_2_lbl" xml:lang="en-US">Debt instrument, face amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredLongTermDebt" xlink:to="us-gaap_SecuredLongTermDebt_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecuredLongTermDebt_3_lbl" xml:lang="en-US">Secured convertible note, net</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_2_lbl" xml:lang="en-US">Debt instrument, unamortized discount premium net</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PreReverseSplit" xlink:label="ATCH_PreReverseSplit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PreReverseSplit" xlink:to="ATCH_PreReverseSplit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PreReverseSplit_lbl" xml:lang="en-US">Pre reverse split</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PostReverseSplit" xlink:label="ATCH_PostReverseSplit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PostReverseSplit" xlink:to="ATCH_PostReverseSplit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PostReverseSplit_lbl" xml:lang="en-US">Post reverse split</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes" xlink:label="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes" xlink:to="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes_lbl" xml:lang="en-US">Amount of debt conversion, converted instrument amount, conversion of interest of convertible notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtConversionOriginalDebtInterestAmount" xlink:label="ATCH_DebtConversionOriginalDebtInterestAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtInterestAmount" xlink:to="ATCH_DebtConversionOriginalDebtInterestAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtConversionOriginalDebtInterestAmount_lbl" xml:lang="en-US">Interest amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCarryingAmount" xlink:to="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Principal balance</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentInterestRateInEventOfDefault" xlink:label="ATCH_DebtInstrumentInterestRateInEventOfDefault" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentInterestRateInEventOfDefault" xlink:to="ATCH_DebtInstrumentInterestRateInEventOfDefault_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentInterestRateInEventOfDefault_lbl" xml:lang="en-US">Interest rate in the event of default (in percent)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionConvertedInstrumentRate" xlink:label="us-gaap_DebtConversionConvertedInstrumentRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentRate" xlink:to="us-gaap_DebtConversionConvertedInstrumentRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentRate_lbl" xml:lang="en-US">Debt instrument, conversion rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LegalFees" xlink:label="us-gaap_LegalFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LegalFees" xlink:to="us-gaap_LegalFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LegalFees_lbl" xml:lang="en-US">Legal fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_TransactionCost" xlink:label="ATCH_TransactionCost" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransactionCost" xlink:to="ATCH_TransactionCost_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_TransactionCost_lbl" xml:lang="en-US">Transaction cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating" xlink:label="us-gaap_InterestIncomeOperating" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeOperating" xlink:to="us-gaap_InterestIncomeOperating_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeOperating_lbl" xml:lang="en-US">Gain on interest</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_lbl" xml:lang="en-US">Accumulated interest</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xml:lang="en-US">Fair vale on accumulated interest</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm" xlink:label="us-gaap_DebtInstrumentTerm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTerm" xlink:to="us-gaap_DebtInstrumentTerm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xml:lang="en-US">Maturity due</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedForContingentGuarantee" xlink:label="ATCH_StockIssuedForContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedForContingentGuarantee" xlink:to="ATCH_StockIssuedForContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedForContingentGuarantee_lbl" xml:lang="en-US">Stock issued for contingent guarantee</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvenienceFeePercentage" xlink:label="ATCH_ConvenienceFeePercentage" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvenienceFeePercentage" xlink:to="ATCH_ConvenienceFeePercentage_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvenienceFeePercentage_lbl" xml:lang="en-US">Percentage of convenience fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ConvertibleNotesIssuedForContingentConsideration" xlink:label="ATCH_ConvertibleNotesIssuedForContingentConsideration" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesIssuedForContingentConsideration" xlink:to="ATCH_ConvertibleNotesIssuedForContingentConsideration_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ConvertibleNotesIssuedForContingentConsideration_lbl" xml:lang="en-US">Amount of convertible notes issued</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_IndividualAdvancesRequestedThresholdTradingDays" xlink:label="ATCH_IndividualAdvancesRequestedThresholdTradingDays" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IndividualAdvancesRequestedThresholdTradingDays" xlink:to="ATCH_IndividualAdvancesRequestedThresholdTradingDays_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_IndividualAdvancesRequestedThresholdTradingDays_lbl" xml:lang="en-US">Threshold trading days</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AmortizationOfDebtDiscount" xlink:label="ATCH_AmortizationOfDebtDiscount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AmortizationOfDebtDiscount" xlink:to="ATCH_AmortizationOfDebtDiscount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_AmortizationOfDebtDiscount_lbl" xml:lang="en-US">Amortization of discount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_2_lbl" xml:lang="en-US">Stock Issued During Period, Shares, Conversion of Convertible Securities</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest" xlink:to="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest_lbl" xml:lang="en-US">Number of shares transferred by related party during the period as a result of conversion of interest portion of convertible securities</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_2_lbl" xml:lang="en-US">Interest Payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LongTermMergerFinancingNet" xlink:label="ATCH_LongTermMergerFinancingNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermMergerFinancingNet" xlink:to="ATCH_LongTermMergerFinancingNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LongTermMergerFinancingNet_lbl" xml:lang="en-US">The amount of long-term merger financing, net</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtConversionOriginalDebtAmountContingentGuarantee" xlink:label="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee" xlink:to="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee_lbl" xml:lang="en-US">Debt conversion original debt amount contingent guarantee</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MergerFinancingConvertibleNoteNoncurrent" xlink:label="ATCH_MergerFinancingConvertibleNoteNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingConvertibleNoteNoncurrent" xlink:to="ATCH_MergerFinancingConvertibleNoteNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MergerFinancingConvertibleNoteNoncurrent_lbl" xml:lang="en-US">Merger financing convertible note noncurrent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_UnamortizedDiscountPremiumContingentGuarantee" xlink:label="ATCH_UnamortizedDiscountPremiumContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnamortizedDiscountPremiumContingentGuarantee" xlink:to="ATCH_UnamortizedDiscountPremiumContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_UnamortizedDiscountPremiumContingentGuarantee_lbl" xml:lang="en-US">Unamortized discount premium contingent guarantee</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee" xlink:label="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee" xlink:to="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee_lbl" xml:lang="en-US">Amortized debt discount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InterestOnContingentGuarantee" xlink:label="ATCH_InterestOnContingentGuarantee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InterestOnContingentGuarantee" xlink:to="ATCH_InterestOnContingentGuarantee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InterestOnContingentGuarantee_lbl" xml:lang="en-US">Interest expense</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesAvailableUnderSharePurchaseAgreement" xlink:label="ATCH_SharesAvailableUnderSharePurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesAvailableUnderSharePurchaseAgreement" xlink:to="ATCH_SharesAvailableUnderSharePurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesAvailableUnderSharePurchaseAgreement_lbl" xml:lang="en-US">Shares available under share purchase agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesSubjectToCompromiseEmployeeAndDeemedClaims" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseEmployeeAndDeemedClaims" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesSubjectToCompromiseEmployeeAndDeemedClaims" xlink:to="us-gaap_LiabilitiesSubjectToCompromiseEmployeeAndDeemedClaims_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseEmployeeAndDeemedClaims_lbl" xml:lang="en-US">Fair value deemed</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount" xlink:to="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_2_lbl" xml:lang="en-US">The purchase commitment amount issued in the form of shares at initial stage</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharesToBeIssuedAmount" xlink:label="ATCH_SharesToBeIssuedAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesToBeIssuedAmount" xlink:to="ATCH_SharesToBeIssuedAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SharesToBeIssuedAmount_lbl" xml:lang="en-US">Commitment amount of shares to be issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US">Common stock, capital shares reserved for future issuance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xml:lang="en-US">Sale of stock</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NumberOfSharesTransferredByRelatedParty" xlink:label="ATCH_NumberOfSharesTransferredByRelatedParty" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesTransferredByRelatedParty" xlink:to="ATCH_NumberOfSharesTransferredByRelatedParty_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NumberOfSharesTransferredByRelatedParty_lbl" xml:lang="en-US">Represents the number of shares transferred as per the agreement by related party</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes_lbl" xml:lang="en-US">Shares issued to settle related party advances and promissory notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement" xlink:label="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement" xlink:to="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement_lbl" xml:lang="en-US">Shares purchased during the period under the agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable" xlink:to="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable_2_lbl" xml:lang="en-US">Common stock share subscribed but unissued subscriptions receivable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PurchaseOfSharesUnderSharePurchaseAgreement" xlink:label="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement" xlink:to="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement_lbl" xml:lang="en-US">The value of shares purchased under the share purchase agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SaleOfSharesUnderSharePurchaseAgreement" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SaleOfSharesUnderSharePurchaseAgreement" xlink:to="ATCH_SaleOfSharesUnderSharePurchaseAgreement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreement_lbl" xml:lang="en-US">The value of shares sold under the share purchase agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SaleOfSharesUnderSharePurchaseAgreementShares" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares" xlink:to="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares_lbl" xml:lang="en-US">The number of shares sold under the share purchase agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:to="us-gaap_DebtConversionConvertedInstrumentAmount1_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_3_lbl" xml:lang="en-US">Convertible amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SharesIssuedPricePerShare_2_lbl" xml:lang="en-US">Sale price per share per share</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtConversionsOriginalDebtInterestAmount" xlink:label="ATCH_DebtConversionsOriginalDebtInterestAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionsOriginalDebtInterestAmount" xlink:to="ATCH_DebtConversionsOriginalDebtInterestAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_DebtConversionsOriginalDebtInterestAmount_lbl" xml:lang="en-US">Interest amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NumberOfSharesIssuableUponDebtConversion" xlink:label="ATCH_NumberOfSharesIssuableUponDebtConversion" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesIssuableUponDebtConversion" xlink:to="ATCH_NumberOfSharesIssuableUponDebtConversion_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_NumberOfSharesIssuableUponDebtConversion_lbl" xml:lang="en-US">Number of shares issuable upon debt conversion</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecurityDepositLiability" xlink:label="us-gaap_SecurityDepositLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecurityDepositLiability" xlink:to="us-gaap_SecurityDepositLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecurityDepositLiability_lbl" xml:lang="en-US">Deposit</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayable_2_lbl" xml:lang="en-US">Promissory note</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentPeriodicPayment" xlink:label="us-gaap_DebtInstrumentPeriodicPayment" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPayment" xlink:to="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xml:lang="en-US">Monthly payments</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentDiscountPercentage" xlink:label="ATCH_DebtInstrumentDiscountPercentage" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentDiscountPercentage" xlink:to="ATCH_DebtInstrumentDiscountPercentage_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentDiscountPercentage_lbl" xml:lang="en-US">Debt discount percentage</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_QualifiedFinancingThresholdGrossProceeds" xlink:label="ATCH_QualifiedFinancingThresholdGrossProceeds" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_QualifiedFinancingThresholdGrossProceeds" xlink:to="ATCH_QualifiedFinancingThresholdGrossProceeds_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_QualifiedFinancingThresholdGrossProceeds_lbl" xml:lang="en-US">Qualified financing, threshold gross proceeds</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:to="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xml:lang="en-US">Debt discount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentAggregateDiscountOnIssuance" xlink:label="ATCH_DebtInstrumentAggregateDiscountOnIssuance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentAggregateDiscountOnIssuance" xlink:to="ATCH_DebtInstrumentAggregateDiscountOnIssuance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentAggregateDiscountOnIssuance_lbl" xml:lang="en-US">Amount of discount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentOriginalIssueDiscount" xlink:label="ATCH_DebtInstrumentOriginalIssueDiscount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentOriginalIssueDiscount" xlink:to="ATCH_DebtInstrumentOriginalIssueDiscount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentOriginalIssueDiscount_lbl" xml:lang="en-US">Debt instrument original issue discount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfConvertibleDebt" xlink:to="us-gaap_RepaymentsOfConvertibleDebt_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfConvertibleDebt_2_lbl" xml:lang="en-US">Convertible notes repaid</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesTransferredToEquitySpa" xlink:to="ATCH_ConvertibleNotesTransferredToEquitySpa_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_ConvertibleNotesTransferredToEquitySpa_2_lbl" xml:lang="en-US">Convertible notes transferred</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits_lbl" xml:lang="en-US">Conversion of units</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_UnitPricePerShare" xlink:label="ATCH_UnitPricePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitPricePerShare" xlink:to="ATCH_UnitPricePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_UnitPricePerShare_lbl" xml:lang="en-US">Price per unit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="us-gaap_InvestmentsFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsFairValueDisclosure" xlink:to="us-gaap_InvestmentsFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentsFairValueDisclosure_lbl" xml:lang="en-US">Investment of equity total</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:to="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xml:lang="en-US">Proceeds from equity investments</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtFairValueDisclosures" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtFairValueDisclosures" xlink:to="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xml:lang="en-US">Converted from Convertible Notes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingTerm" xlink:to="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xml:lang="en-US">Warrant term</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_2_lbl" xml:lang="en-US">Number of shares per warrant</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2_lbl" xml:lang="en-US">Warrant exercise price per share</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice" xlink:label="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice" xlink:to="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice_lbl" xml:lang="en-US">Number of closing bid price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination" xlink:label="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination" xlink:to="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination_lbl" xml:lang="en-US">Days for calculating bid price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EquityFinancingParticipationRightTriggerPeriod" xlink:label="ATCH_EquityFinancingParticipationRightTriggerPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingParticipationRightTriggerPeriod" xlink:to="ATCH_EquityFinancingParticipationRightTriggerPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EquityFinancingParticipationRightTriggerPeriod_lbl" xml:lang="en-US">Period for conducting subsequent financing</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering" xlink:label="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering" xlink:to="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering_lbl" xml:lang="en-US">Minimum threshold investment amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EquityFinancingMaximumReinvestmentPercentage" xlink:label="ATCH_EquityFinancingMaximumReinvestmentPercentage" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingMaximumReinvestmentPercentage" xlink:to="ATCH_EquityFinancingMaximumReinvestmentPercentage_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EquityFinancingMaximumReinvestmentPercentage_lbl" xml:lang="en-US">Percentage of investment amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable_lbl" xml:lang="en-US">Placement agent fees, percentage of notes</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors_lbl" xml:lang="en-US">Placement agent fees, percentage of sale of units to existing investors</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors_lbl" xml:lang="en-US">Placement agent fees, percentage of sale of units to new investors</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentOfFinancingAndStockIssuanceCosts" xlink:to="us-gaap_PaymentOfFinancingAndStockIssuanceCosts_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentOfFinancingAndStockIssuanceCosts_2_lbl" xml:lang="en-US">Total transaction cost paid</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US">Warrants exercised to purchase of common stock</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Warrants to purchase of common stock fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetAcquisitionConsiderationTransferred" xlink:label="us-gaap_AssetAcquisitionConsiderationTransferred" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetAcquisitionConsiderationTransferred" xlink:to="us-gaap_AssetAcquisitionConsiderationTransferred_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetAcquisitionConsiderationTransferred_lbl" xml:lang="en-US">Transaction cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfWarrants" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfWarrants" xlink:to="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US">Warrants issued</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal" xlink:label="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal" xlink:to="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal_lbl" xml:lang="en-US">Transaction cost of warrants to purchase of common stock</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueOther" xlink:to="us-gaap_StockIssuedDuringPeriodValueOther_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_2_lbl" xml:lang="en-US">Units sold</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfWarrantsAllocatedForEquitySPA" xlink:label="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA" xlink:to="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_lbl" xml:lang="en-US">Initial value of warrants allocated for Equity SPA</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAdjustmentOfWarrants" xlink:to="us-gaap_FairValueAdjustmentOfWarrants_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_3_lbl" xml:lang="en-US">Warrant liability</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_3_lbl" xml:lang="en-US">Stock Issued During Period, Value, Issued for Services</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ValueOfSharesIssuableForServicesInEachInstallment" xlink:label="ATCH_ValueOfSharesIssuableForServicesInEachInstallment" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ValueOfSharesIssuableForServicesInEachInstallment" xlink:to="ATCH_ValueOfSharesIssuableForServicesInEachInstallment_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ValueOfSharesIssuableForServicesInEachInstallment_lbl" xml:lang="en-US">Value of shares issuable for services in each installment</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SubscriptionPayableLiabilityNoncurrent" xlink:label="ATCH_SubscriptionPayableLiabilityNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionPayableLiabilityNoncurrent" xlink:to="ATCH_SubscriptionPayableLiabilityNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SubscriptionPayableLiabilityNoncurrent_lbl" xml:lang="en-US">Subscription payable liability noncurrent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDepositOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInDepositOtherAssets_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDepositOtherAssets_2_lbl" xml:lang="en-US">Deemed value</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_2_lbl" xml:lang="en-US">Common Stock with fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LossOnSettlement" xlink:label="ATCH_LossOnSettlement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossOnSettlement" xlink:to="ATCH_LossOnSettlement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LossOnSettlement_lbl" xml:lang="en-US">Loss on settlement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubordinatedLongTermDebt" xlink:to="us-gaap_SubordinatedLongTermDebt_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubordinatedLongTermDebt_3_lbl" xml:lang="en-US">Subordinated debt</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CommitmentsAndContingenciesTable" xlink:label="ATCH_CommitmentsAndContingenciesTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommitmentsAndContingenciesTable" xlink:to="ATCH_CommitmentsAndContingenciesTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CommitmentsAndContingenciesTable_lbl" xml:lang="en-US">CommitmentsAndContingenciesTable [Table]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:to="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets_2_lbl" xml:lang="en-US">Shares issued as purchase consideration for the assets</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnOutSharesMaximumNumberOfSharesIssuable" xlink:label="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable" xlink:to="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable_lbl" xml:lang="en-US">Earn Out Shares, maximum shares issuable to stockholders</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" xlink:label="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" xlink:to="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares_lbl" xml:lang="en-US">Threshold period from closing to achieve milestones considered for issuance of earn out shares</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnOutSharesMaximumAmountOfSharesIssuable" xlink:label="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable" xlink:to="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable_lbl" xml:lang="en-US">Software Products Earn Out Shares, maximum amount of shares issuable to stockholders</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PeriodForMeasurementOfRevenueTargets" xlink:label="ATCH_PeriodForMeasurementOfRevenueTargets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PeriodForMeasurementOfRevenueTargets" xlink:to="ATCH_PeriodForMeasurementOfRevenueTargets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PeriodForMeasurementOfRevenueTargets_lbl" xml:lang="en-US">Period for measurement of revenue targets</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementTermOfEmployment" xlink:label="ATCH_EmploymentAgreementTermOfEmployment" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementTermOfEmployment" xlink:to="ATCH_EmploymentAgreementTermOfEmployment_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementTermOfEmployment_lbl" xml:lang="en-US">Employment agreement term of employment</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementTermOfRenewal" xlink:label="ATCH_EmploymentAgreementTermOfRenewal" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementTermOfRenewal" xlink:to="ATCH_EmploymentAgreementTermOfRenewal_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementTermOfRenewal_lbl" xml:lang="en-US">Employment agreement term of renewal</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementAnnualBaseSalaryYearOne" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne_lbl" xml:lang="en-US">Employment agreement annual base salary year one</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo_lbl" xml:lang="en-US">Employment agreement annual base salary increase</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementAnnualBaseSalaryYearThree" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree_lbl" xml:lang="en-US">Employment agreement annual base salary year three</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedBonusesCurrentAndNoncurrent" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedBonusesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xml:lang="en-US">Signing bonus</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PercentageOfBonusPayable" xlink:label="ATCH_PercentageOfBonusPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayable" xlink:to="ATCH_PercentageOfBonusPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PercentageOfBonusPayable_lbl" xml:lang="en-US">Percentage of bonus payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_MinimumQualifiedCumulativeFinancingAmount" xlink:label="ATCH_MinimumQualifiedCumulativeFinancingAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MinimumQualifiedCumulativeFinancingAmount" xlink:to="ATCH_MinimumQualifiedCumulativeFinancingAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_MinimumQualifiedCumulativeFinancingAmount_lbl" xml:lang="en-US">Minimum qualified cumulative financing</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PercentageOfBonusPayableFourthQuarter" xlink:label="ATCH_PercentageOfBonusPayableFourthQuarter" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayableFourthQuarter" xlink:to="ATCH_PercentageOfBonusPayableFourthQuarter_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PercentageOfBonusPayableFourthQuarter_lbl" xml:lang="en-US">Percentage of bonus payable fourth quarter</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_PercentageOfBonusPayableFirstQuarter" xlink:label="ATCH_PercentageOfBonusPayableFirstQuarter" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayableFirstQuarter" xlink:to="ATCH_PercentageOfBonusPayableFirstQuarter_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_PercentageOfBonusPayableFirstQuarter_lbl" xml:lang="en-US">Percentage of bonus payable first quarter</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementStockGrants" xlink:label="ATCH_EmploymentAgreementStockGrants" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementStockGrants" xlink:to="ATCH_EmploymentAgreementStockGrants_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementStockGrants_lbl" xml:lang="en-US">Employment agreement stock grants</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementNumberOfStockAwards" xlink:label="ATCH_EmploymentAgreementNumberOfStockAwards" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementNumberOfStockAwards" xlink:to="ATCH_EmploymentAgreementNumberOfStockAwards_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementNumberOfStockAwards_lbl" xml:lang="en-US">Number of stock awards</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward" xlink:label="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward" xlink:to="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward_lbl" xml:lang="en-US">Threshold percentage of outstanding shares for determining stock award</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US">Vesting period</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WeightedAveragePrice" xlink:label="ATCH_WeightedAveragePrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WeightedAveragePrice" xlink:to="ATCH_WeightedAveragePrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WeightedAveragePrice_lbl" xml:lang="en-US">Weighted average price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal" xlink:label="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal" xlink:to="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal_lbl" xml:lang="en-US">Employment agreement threshold period of written notice of non renewal</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice" xlink:label="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice" xlink:to="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice_lbl" xml:lang="en-US">Threshold trading days over which volume weighted average stock price considered calculating stock trading price</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementOneTimeSignInBonusPaid" xlink:label="ATCH_EmploymentAgreementOneTimeSignInBonusPaid" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementOneTimeSignInBonusPaid" xlink:to="ATCH_EmploymentAgreementOneTimeSignInBonusPaid_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementOneTimeSignInBonusPaid_lbl" xml:lang="en-US">One time sign in bonus</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarnestMoneyDeposits" xlink:label="us-gaap_EarnestMoneyDeposits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarnestMoneyDeposits" xlink:to="us-gaap_EarnestMoneyDeposits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarnestMoneyDeposits_lbl" xml:lang="en-US">Earnest money deposits</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit" xlink:label="us-gaap_LineOfCredit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US">Revolving line of credit</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Debt instrument, basis spread on variable rate</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage" xlink:label="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage" xlink:to="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage_lbl" xml:lang="en-US">Contractual interest rate for unused portion, under the debt agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseDebt" xlink:to="us-gaap_InterestExpenseDebt_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestExpenseDebt_2_lbl" xml:lang="en-US">LIne of credit accrued interest</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyDamagesAwardedValue" xlink:label="us-gaap_LossContingencyDamagesAwardedValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyDamagesAwardedValue" xlink:to="us-gaap_LossContingencyDamagesAwardedValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LossContingencyDamagesAwardedValue_lbl" xml:lang="en-US">Amount of damages awarded to the plaintiff in the legal matter</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_LossContingencyReductionInDamageAwarded" xlink:label="ATCH_LossContingencyReductionInDamageAwarded" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossContingencyReductionInDamageAwarded" xlink:to="ATCH_LossContingencyReductionInDamageAwarded_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_LossContingencyReductionInDamageAwarded_lbl" xml:lang="en-US">Damage reduced</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LitigationReserveNoncurrent" xlink:label="us-gaap_LitigationReserveNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationReserveNoncurrent" xlink:to="us-gaap_LitigationReserveNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LitigationReserveNoncurrent_lbl" xml:lang="en-US">Accrued contingent liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SoftwareDevelopmentAndLicenseAgreementTerm" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm_lbl" xml:lang="en-US">Software development and license agreement term</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SoftwareDevelopmentAndLicenseAgreementPayable" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable_lbl" xml:lang="en-US">Software development and license agreement payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable_lbl" xml:lang="en-US">Software development and license agreement upfront fees payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable_lbl" xml:lang="en-US">Software development and license agreement first month payable</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable_lbl" xml:lang="en-US">Software development and license agreement remaining month payable</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightTable" xlink:label="us-gaap_ClassOfWarrantOrRightTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightTable" xlink:to="us-gaap_ClassOfWarrantOrRightTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightTable_lbl" xml:lang="en-US">Class of Warrant or Right [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightLineItems" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightLineItems" xlink:to="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xml:lang="en-US">Class of Warrant or Right [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xml:lang="en-US">Warrant, Beginning balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xml:lang="en-US">Warrant, Issued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_lbl" xml:lang="en-US">Warrant, Exerised</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations_lbl" xml:lang="en-US">Warrant, Expired/Cancelled</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_2_lbl" xml:lang="en-US">Warrant, Ending balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_2_lbl" xml:lang="en-US">Preferred stock, par or stated value per share</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_2_lbl" xml:lang="en-US">Common stock, par or stated value per share</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockVotingRights" xlink:label="us-gaap_CommonStockVotingRights" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockVotingRights" xlink:to="us-gaap_CommonStockVotingRights_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockVotingRights_lbl" xml:lang="en-US">Common stock, voting rights</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_4_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesIssued_4_lbl" xml:lang="en-US">Common stock, shares, issued</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_2_lbl" xml:lang="en-US">Common stock, shares, outstanding</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharesIssuedPricePerShare_3_lbl" xml:lang="en-US">Share price</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_3_lbl" xml:lang="en-US">Conversion price floor</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionPriceDecrease" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPriceDecrease" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPriceDecrease" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPriceDecrease_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPriceDecrease_lbl" xml:lang="en-US">Floor price decrease</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits" xlink:label="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits" xlink:to="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits_lbl" xml:lang="en-US">Number of shares issued</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesOther" xlink:to="us-gaap_StockIssuedDuringPeriodSharesOther_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_3_lbl" xml:lang="en-US">Warrants issued, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstanding" xlink:label="us-gaap_WarrantsAndRightsOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstanding" xlink:to="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xml:lang="en-US">Warrants outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US">Warrants exercised</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_3_lbl" xml:lang="en-US">Common stock shares</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_3_lbl" xml:lang="en-US">Common stock valued</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Number of nonvested shares, outstanding balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted-average grant date fair value per share, balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Number of nonvested shares, granted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted average grant date fair value per share, granted</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Number of nonvested shares, vested</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted average grant date fair value per share, vested</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US">Number of nonvested shares, forfeited</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted average grant date fair value per share, forfeited</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2_lbl" xml:lang="en-US">Number of nonvested shares, outstanding balance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2_lbl" xml:lang="en-US">Weighted-average grant date fair value per share, balance</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_lbl" xml:lang="en-US">Volume weighted average price, balance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_3_lbl" xml:lang="en-US">Weighted-average grant date fair value per share, balance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US">Expected volatility</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US">Risk-free interest rate</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US">Expected term</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US">Expected dividend yield</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SharePrice_2_lbl" xml:lang="en-US">Fair value per share (Tranche 5)</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_2_lbl" xml:lang="en-US">Total stock-based compensation expense</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements" xlink:label="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements" xlink:to="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements_lbl" xml:lang="en-US">Employment agreement executives annual base salaries entitlements</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2_lbl" xml:lang="en-US">Granted shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_lbl" xml:lang="en-US">Additional shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_lbl" xml:lang="en-US">Grant date fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived_lbl" xml:lang="en-US">Award vesting period</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent_lbl" xml:lang="en-US">Number of shares per award, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_2_lbl" xml:lang="en-US">Share based compensation arrangement by share based payment award grants volume weighted average trigger price</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2_lbl" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2_lbl" xml:lang="en-US">Equity instruments other than options, vested in period shares</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xml:lang="en-US">Unrecognized compensation cost</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US">Weighted-average period</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xml:lang="en-US">Federal</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xml:lang="en-US">State</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Total current</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Federal</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xml:lang="en-US">State</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Total deferred</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_2_lbl" xml:lang="en-US">Total benefit on income taxes</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration" xlink:label="us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration" xlink:to="us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration_lbl" xml:lang="en-US">Income tax statutory enumeration</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US">Tax at Statutory rate, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US">Tax at Statutory rate, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_lbl" xml:lang="en-US">Change in fair value of warrant liability, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_lbl" xml:lang="en-US">Change in fair value of warrant liability, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount_lbl" xml:lang="en-US">Meals, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent_lbl" xml:lang="en-US">Meals, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount_lbl" xml:lang="en-US">Entertainment, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent_lbl" xml:lang="en-US">Entertainment, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount_lbl" xml:lang="en-US">Fair value of convertible note, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent_lbl" xml:lang="en-US">Chane in fair value of convertible note, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount_lbl" xml:lang="en-US">Change in fair value of earnout liability, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent_lbl" xml:lang="en-US">Change in fair value of earnout liability, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_lbl" xml:lang="en-US">Change in fair value of subscription agreement, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_lbl" xml:lang="en-US">Change in fair value of subscription agreement, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA_lbl" xml:lang="en-US">Change in fair value of Convertible note SPA, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent_lbl" xml:lang="en-US">Change in fair value of convertible note SPA, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture_lbl" xml:lang="en-US">Change in fair value of debenture, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent_lbl" xml:lang="en-US">Change in fair value of debenture, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote_lbl" xml:lang="en-US">Change in fair value of Secured convertible note, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent_lbl" xml:lang="en-US">Change in fair value of Secured convertible note, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_lbl" xml:lang="en-US">Change in fair value of Tau agreement, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_lbl" xml:lang="en-US">Change in fair value of Tau agreement, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount_lbl" xml:lang="en-US">Change in fair value of WDCO sellers convertible note, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent_lbl" xml:lang="en-US">Change in fair value of WDCO sellers convertible note, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation_lbl" xml:lang="en-US">Stock compensation, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent_lbl" xml:lang="en-US">Stock compensation, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_lbl" xml:lang="en-US">Change in statutory rate, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_lbl" xml:lang="en-US">Change in statutory rate, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_lbl" xml:lang="en-US">Return to provision, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_lbl" xml:lang="en-US">Return To Provision, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xml:lang="en-US">State tax net of federal benefit, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_lbl" xml:lang="en-US">State tax net of federal benefit, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount_lbl" xml:lang="en-US">State minimum tax net of federal benefitt, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent_lbl" xml:lang="en-US">State minimum tax net of federal benefitt, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount_lbl" xml:lang="en-US">Chang in valuation allowance state, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent_lbl" xml:lang="en-US">Chang in valuation allowance state, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount_lbl" xml:lang="en-US">Chang in valuation allowance federal, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent_lbl" xml:lang="en-US">Chang in valuation allowance federal, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_lbl" xml:lang="en-US">Goodwill intangible DTA recognized as part of acquisition, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_lbl" xml:lang="en-US">Goodwill intangible DTA recognized as part of acquisitionl, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xml:lang="en-US">Income tax benefit, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_2_lbl" xml:lang="en-US">Change in fair value of warrant liability, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_2_lbl" xml:lang="en-US">Change in fair value of warrant liability, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount_lbl" xml:lang="en-US">Change in fair value of long-term and short term investor notes, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent_lbl" xml:lang="en-US">Change in fair value of long-term and short term investor notes, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_2_lbl" xml:lang="en-US">Change in fair value of subscription agreement, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_2_lbl" xml:lang="en-US">Change in fair value of Subscription Agreement, percentage</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable_lbl" xml:lang="en-US">Change in fair value of stock payable amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent_lbl" xml:lang="en-US">Change in fair value of stock payable, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_2_lbl" xml:lang="en-US">Change in fair value of Tau agreement, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_2_lbl" xml:lang="en-US">Change in fair value of Tau agreement, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount_lbl" xml:lang="en-US">Change in fair value of Tau commitment fee, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent_lbl" xml:lang="en-US">Change in fair value of Tau commitment fee, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount_lbl" xml:lang="en-US">Change in fair value of WDCO share payable, amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent_lbl" xml:lang="en-US">Change in fair value of WDCO share payable, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_2_lbl" xml:lang="en-US">Change in statutory rate, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_2_lbl" xml:lang="en-US">Change in statutory rate, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_2_lbl" xml:lang="en-US">Return to provision, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_2_lbl" xml:lang="en-US">Return To Provision, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount_lbl" xml:lang="en-US">Net adjustments federal amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent_lbl" xml:lang="en-US">Net adjustments federal, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_2_lbl" xml:lang="en-US">Goodwill intangible DTA recognized as part of acquisition, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_2_lbl" xml:lang="en-US">Goodwill intangible DTA recognized as part of acquisitionl, percent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxExpenseBenefit_3_lbl" xml:lang="en-US">Income tax benefit, amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_2_lbl" xml:lang="en-US">Income tax benefit, percent</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsNetAbstract" xlink:label="us-gaap_DeferredTaxAssetsNetAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsNetAbstract" xlink:to="us-gaap_DeferredTaxAssetsNetAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsNetAbstract_lbl" xml:lang="en-US">Deferred Tax Assets:</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxAssetsFixedAssets" xlink:label="ATCH_DeferredTaxAssetsFixedAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetsFixedAssets" xlink:to="ATCH_DeferredTaxAssetsFixedAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxAssetsFixedAssets_lbl" xml:lang="en-US">Fixed Assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_lbl" xml:lang="en-US">Business Combination Expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits_lbl" xml:lang="en-US">IRC Sec. 195 Start-Up Costs</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances_lbl" xml:lang="en-US">Allowance for Bad Debt</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies_lbl" xml:lang="en-US">Accrued Contingent Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxAssetLeaseLiability" xlink:label="ATCH_DeferredTaxAssetLeaseLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetLeaseLiability" xlink:to="ATCH_DeferredTaxAssetLeaseLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxAssetLeaseLiability_lbl" xml:lang="en-US">Lease Liability (ASC 842)</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses_lbl" xml:lang="en-US">IRC Sec. 1231 Losses</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxAssetsNetOperatingLoss" xlink:label="ATCH_DeferredTaxAssetsNetOperatingLoss" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetsNetOperatingLoss" xlink:to="ATCH_DeferredTaxAssetsNetOperatingLoss_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxAssetsNetOperatingLoss_lbl" xml:lang="en-US">Net Operating Loss</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="us-gaap_DeferredTaxAssetsGross" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsGross_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xml:lang="en-US">Total Deferred Tax Asset</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxLiabilitiesNetAbstract" xlink:label="us-gaap_DeferredTaxLiabilitiesNetAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesNetAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesNetAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxLiabilitiesNetAbstract_lbl" xml:lang="en-US">Deferred Tax Liabilities:</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:to="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_lbl" xml:lang="en-US">Intangible Assets</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset" xlink:label="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset" xlink:to="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset_lbl" xml:lang="en-US">ROU Lease Asset (ASC 842)</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxLiabilitiesStateTaxCurrent" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesStateTaxCurrent" xlink:to="ATCH_DeferredTaxLiabilitiesStateTaxCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxCurrent_lbl" xml:lang="en-US">State Tax - Current</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DeferredTaxLiabilitiesStateTaxDeferred" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxDeferred" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesStateTaxDeferred" xlink:to="ATCH_DeferredTaxLiabilitiesStateTaxDeferred_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxDeferred_lbl" xml:lang="en-US">State Tax - Deferred</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="us-gaap_DeferredIncomeTaxLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilities" xlink:to="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xml:lang="en-US">Total Deferred Tax Liability</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance" xlink:label="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance" xlink:to="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance_lbl" xml:lang="en-US">Net Deferred Tax Asset before Valuation allowance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US">Valuation Allowance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xml:lang="en-US">Net Deferred Tax Asset/(Liability)</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_2_lbl" xml:lang="en-US">Valuation allowance</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="us-gaap_UnrecognizedTaxBenefits" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefits" xlink:to="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xml:lang="en-US">Unrecognized tax benefits</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xml:lang="en-US">Income tax penalties and interest expense</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="us-gaap_OperatingLossCarryforwards" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLossCarryforwards" xlink:to="us-gaap_OperatingLossCarryforwards_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xml:lang="en-US">Net operating loss carryforwards</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xml:lang="en-US">Deferred tax assets, operating loss carryforwards</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" xlink:label="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" xlink:to="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable_lbl" xml:lang="en-US">Fair Value, off-Balance-Sheet Risk [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" xlink:label="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" xlink:to="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems_lbl" xml:lang="en-US">Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="us-gaap_MarketableSecuritiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesCurrent" xlink:to="us-gaap_MarketableSecuritiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesCurrent_lbl" xml:lang="en-US">Trading securities</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WinstonStrawnAgreementFairValueDisclosure" xlink:label="ATCH_WinstonStrawnAgreementFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonStrawnAgreementFairValueDisclosure" xlink:to="ATCH_WinstonStrawnAgreementFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WinstonStrawnAgreementFairValueDisclosure_lbl" xml:lang="en-US">Winston &amp; Strawn Agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantLiabilityPrivateWarrants" xlink:label="ATCH_WarrantLiabilityPrivateWarrants" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiabilityPrivateWarrants" xlink:to="ATCH_WarrantLiabilityPrivateWarrants_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantLiabilityPrivateWarrants_lbl" xml:lang="en-US">Warrant liability &#8211; Private Warrants</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" xlink:label="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" xlink:to="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure_lbl" xml:lang="en-US">Earnout liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability" xlink:label="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability" xlink:to="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_lbl" xml:lang="en-US">Secured Convertible Note</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SharePurchaseCommitmentFairValueDisclosure" xlink:label="ATCH_SharePurchaseCommitmentFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharePurchaseCommitmentFairValueDisclosure" xlink:to="ATCH_SharePurchaseCommitmentFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_SharePurchaseCommitmentFairValueDisclosure_lbl" xml:lang="en-US">Tau agreement</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantLiabilityEquity" xlink:label="ATCH_WarrantLiabilityEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiabilityEquity" xlink:to="ATCH_WarrantLiabilityEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantLiabilityEquity_lbl" xml:lang="en-US">Warrants liability &#8211; Equity SPA</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xml:lang="en-US">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xml:lang="en-US">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_SubscriptionAgreementMeasurementInput" xlink:label="ATCH_SubscriptionAgreementMeasurementInput" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionAgreementMeasurementInput" xlink:to="ATCH_SubscriptionAgreementMeasurementInput_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_SubscriptionAgreementMeasurementInput_lbl" xml:lang="en-US">Subscription agreement measurement input</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:to="us-gaap_WarrantsAndRightsOutstandingMeasurementInput_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput_lbl" xml:lang="en-US">Warrants and rights expiration date description</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_WarrantsAndRightsExpirationDateDescription" xlink:label="ATCH_WarrantsAndRightsExpirationDateDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsAndRightsExpirationDateDescription" xlink:to="ATCH_WarrantsAndRightsExpirationDateDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_WarrantsAndRightsExpirationDateDescription_lbl" xml:lang="en-US">Effective expiration date</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_EarnoutLiabilityMeasurementInput" xlink:label="ATCH_EarnoutLiabilityMeasurementInput" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityMeasurementInput" xlink:to="ATCH_EarnoutLiabilityMeasurementInput_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_EarnoutLiabilityMeasurementInput_lbl" xml:lang="en-US">Earnout liability measurement input</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityMeasurementInput" xlink:label="us-gaap_DerivativeLiabilityMeasurementInput" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityMeasurementInput" xlink:to="us-gaap_DerivativeLiabilityMeasurementInput_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilityMeasurementInput_lbl" xml:lang="en-US">Derivative liability measurement input</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingTerm" xlink:to="us-gaap_WarrantsAndRightsOutstandingTerm_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_2_lbl" xml:lang="en-US">Term</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_DerivativeLiabilityExpirationDateDescription" xlink:label="ATCH_DerivativeLiabilityExpirationDateDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityExpirationDateDescription" xlink:to="ATCH_DerivativeLiabilityExpirationDateDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_DerivativeLiabilityExpirationDateDescription_lbl" xml:lang="en-US">Effective expiration date</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CommitmentAmountMeasurementInput" xlink:label="ATCH_CommitmentAmountMeasurementInput" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommitmentAmountMeasurementInput" xlink:to="ATCH_CommitmentAmountMeasurementInput_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CommitmentAmountMeasurementInput_lbl" xml:lang="en-US">Commitment amount measurement input</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_CommitmentAmountExpirationDateDescription" xlink:label="ATCH_CommitmentAmountExpirationDateDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommitmentAmountExpirationDateDescription" xlink:to="ATCH_CommitmentAmountExpirationDateDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_CommitmentAmountExpirationDateDescription_lbl" xml:lang="en-US">Effective expiration date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xml:lang="en-US">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xml:lang="en-US">Fair value as of June 30, 2025</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff_lbl" xml:lang="en-US">Write off receivable</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_2_lbl" xml:lang="en-US">Change in valuation inputs or other assumptions</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" xlink:label="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" xlink:to="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag_lbl" xml:lang="en-US">Change in valuation inputs or other assumptions</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2_lbl" xml:lang="en-US">Fair value as of June 30, 2026</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US">Initial measurement October 8, 2025</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests_lbl" xml:lang="en-US">Fair value of advance requests</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity_lbl" xml:lang="en-US">Transferred to equity</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration_lbl" xml:lang="en-US">Fair value of settlement consideration</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement_lbl" xml:lang="en-US">Loss on settlement</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xml:lang="en-US">Shares issued as partial payment</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges_lbl" xml:lang="en-US">Exchange to Merger financing note</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_lbl" xml:lang="en-US">Principal amount</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_lbl" xml:lang="en-US">Day 1 fair value charge to earnings</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_2_lbl" xml:lang="en-US">Accrued interest through June 30, 2026</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised_lbl" xml:lang="en-US">Fair value of warrants exercised</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossRelatedToLitigationSettlement" xlink:to="us-gaap_GainLossRelatedToLitigationSettlement_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement_lbl" xml:lang="en-US">Gain loss on settlement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability" xlink:to="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_2_lbl" xml:lang="en-US">Embedded derivative, fair value of embedded derivative liability</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeNet" xlink:to="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xml:lang="en-US">Fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialFairValueCommitmentAmount" xlink:label="ATCH_InitialFairValueCommitmentAmount" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialFairValueCommitmentAmount" xlink:to="ATCH_InitialFairValueCommitmentAmount_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialFairValueCommitmentAmount_lbl" xml:lang="en-US">Commitment amount</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialFairValueCommitmentFee" xlink:label="ATCH_InitialFairValueCommitmentFee" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialFairValueCommitmentFee" xlink:to="ATCH_InitialFairValueCommitmentFee_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialFairValueCommitmentFee_lbl" xml:lang="en-US">Commitment fee</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet" xlink:label="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet" xlink:to="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet_lbl" xml:lang="en-US">Fair value of embedded derivatives</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_2_lbl" xml:lang="en-US">Issued and sale of shares</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_2_lbl" xml:lang="en-US">Fair value of warrants issued at issuance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA" xlink:to="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_2_lbl" xml:lang="en-US">Fair value of warrants issued in units</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity" xlink:to="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity_lbl" xml:lang="en-US">Warrant issued to placement agents</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_lbl" xml:lang="en-US">Transfers between the levels</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_RevenueFromStockLocateFees" xlink:label="ATCH_RevenueFromStockLocateFees" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromStockLocateFees" xlink:to="ATCH_RevenueFromStockLocateFees_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_RevenueFromStockLocateFees_lbl" xml:lang="en-US">Stock locate fees</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_OtherRevenue" xlink:label="ATCH_OtherRevenue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OtherRevenue" xlink:to="ATCH_OtherRevenue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ATCH_OtherRevenue_lbl" xml:lang="en-US">Other revenue</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_2_lbl" xml:lang="en-US">Loss from operations</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_Assets_2_lbl" xml:lang="en-US">Total assets</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xml:lang="en-US">Segment Reporting [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="us-gaap_SegmentReportingInformationLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xml:lang="en-US">Segment Reporting [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfReportableSegments" xlink:label="us-gaap_NumberOfReportableSegments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xml:lang="en-US">Reportable segment</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_3_lbl" xml:lang="en-US">Shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="atch-20260630.xsd#ATCH_StockOptionPriceTriggerAdjustmentsDescription" xlink:label="ATCH_StockOptionPriceTriggerAdjustmentsDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockOptionPriceTriggerAdjustmentsDescription" xlink:to="ATCH_StockOptionPriceTriggerAdjustmentsDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_StockOptionPriceTriggerAdjustmentsDescription_lbl" xml:lang="en-US">Stock option price trigger description</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_3_lbl" xml:lang="en-US">Debt principal amount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_2_lbl" xml:lang="en-US">Debt maturity</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NoInsiderTradingFlag" xlink:to="ATCH_NoInsiderTradingFlag_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NoInsiderTradingFlag_doc" xml:lang="en-US">No insider trading flag.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers" xlink:to="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashSegregatedProprietaryAccountsOfBrokerDealers_doc" xml:lang="en-US">Represents information pertaining to cash segregated for Proprietary Accounts of Broker-Dealers (PAB).</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertiblePromissoryNotesMember" xlink:to="ATCH_ConvertiblePromissoryNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertiblePromissoryNotesMember_doc" xml:lang="en-US">Convertible Promissory Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FunicularNoteMember" xlink:to="ATCH_FunicularNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FunicularNoteMember_doc" xml:lang="en-US">Funicular Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommercialBankAcquisitionDeposit" xlink:to="ATCH_CommercialBankAcquisitionDeposit_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CommercialBankAcquisitionDeposit_doc" xml:lang="en-US">Amount of Commercial bank acquisition deposit.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitsIssuedProceeds" xlink:to="ATCH_UnitsIssuedProceeds_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_UnitsIssuedProceeds_doc" xml:lang="en-US">Total cash inflow from issuance of units during the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent" xlink:to="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AccountsAndPayablesToOfficersAndDirectorsCurrent_doc" xml:lang="en-US">The amount of accounts and payables to officers and directors, classified as current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommissionsPayrollAndPayrollTaxesCurrent" xlink:to="ATCH_CommissionsPayrollAndPayrollTaxesCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CommissionsPayrollAndPayrollTaxesCurrent_doc" xml:lang="en-US">The amount of payables for commissions, payroll and payroll taxes, classified as current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits" xlink:to="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_GrossProceedsFromIssuanceOfDebtAndUnits_doc" xml:lang="en-US">Aggregate cash inflow from issuance of debt and units during the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermMergerFinancingCurrent" xlink:to="ATCH_LongTermMergerFinancingCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LongTermMergerFinancingCurrent_doc" xml:lang="en-US">Carrying value as of the balance sheet date of the current portion of long-term merger financing (with maturities initially due after one year or beyond the operating cycle if longer).</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingPayable" xlink:to="ATCH_MergerFinancingPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingPayable_doc" xml:lang="en-US">Represents the liability for amounts due under financing arrangements entered into to fund a merger, excluding derivative features.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:to="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_doc" xml:lang="en-US">Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability, maturing within one year or operating cycle, if longer.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharePurchaseCommitmentAmountCurrent" xlink:to="ATCH_SharePurchaseCommitmentAmountCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharePurchaseCommitmentAmountCurrent_doc" xml:lang="en-US">Amount of share purchase commitment amount classified as current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureCurrent" xlink:to="ATCH_DebentureCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebentureCurrent_doc" xml:lang="en-US">Amount of debenture issued classified that are expected to be paid during the following twelve months or within one business cycle, if longer.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPayableCurrent" xlink:to="ATCH_StockPayableCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPayableCurrent_doc" xml:lang="en-US">Carrying value as of the balance sheet date of stock payable that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityWarrants" xlink:to="ATCH_DerivativeLiabilityWarrants_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeLiabilityWarrants_doc" xml:lang="en-US">Derivative liability warrants</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilitiesNoncurrent" xlink:to="ATCH_EarnoutLiabilitiesNoncurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnoutLiabilitiesNoncurrent_doc" xml:lang="en-US">The amount of earnout liabilities of the entity classified as current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TradingAccountDepositNoncurrent" xlink:to="ATCH_TradingAccountDepositNoncurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TradingAccountDepositNoncurrent_doc" xml:lang="en-US">The amount of trading account deposit liabilities, classified as noncurrent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromVettingProcessingFees" xlink:to="ATCH_RevenueFromVettingProcessingFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RevenueFromVettingProcessingFees_doc" xml:lang="en-US">Amount of revenue that is derived from the vetting fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromClearanceFees" xlink:to="ATCH_RevenueFromClearanceFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RevenueFromClearanceFees_doc" xml:lang="en-US">Amount of revenue that is derived from the clearing fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransferFees" xlink:to="ATCH_TransferFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TransferFees_doc" xml:lang="en-US">The amount of expenses incurred in the period for transfer fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BankCharges" xlink:to="ATCH_BankCharges_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_BankCharges_doc" xml:lang="en-US">The amount of expenses incurred in the period for bank charges.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:to="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnConvertibleNoteDerivativeNet_doc" xml:lang="en-US">Amount of increase (decrease) in the fair value of convertible notes derivatives recognized in the income statement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" xlink:to="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet_doc" xml:lang="en-US">Amount of increase (decrease) in the fair value of long-tem and short-term notes derivatives recognized in the income statement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfContingentGuarantee" xlink:to="ATCH_FairValueAdjustmentOfContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfContingentGuarantee_doc" xml:lang="en-US">Amount of expense (income) related to adjustment to fair value of contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement" xlink:to="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_doc" xml:lang="en-US">Amount of expense (income) related to adjustment to fair value of winston strawn agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossOnSettlementOnWinstonStrawnAgreement" xlink:to="ATCH_LossOnSettlementOnWinstonStrawnAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LossOnSettlementOnWinstonStrawnAgreement_doc" xml:lang="en-US">Loss On Settlement On Winston Strawn Agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingDerivative" xlink:to="ATCH_MergerFinancingDerivative_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingDerivative_doc" xml:lang="en-US">Merger financing derivative</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityDebenture" xlink:to="ATCH_DerivativeLiabilityDebenture_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeLiabilityDebenture_doc" xml:lang="en-US">Tau agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNoteDerivative" xlink:to="ATCH_ConvertibleNoteDerivative_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNoteDerivative_doc" xml:lang="en-US">Convertible note derivative</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ChardanCapitalMarketsLLCMember" xlink:to="ATCH_ChardanCapitalMarketsLLCMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ChardanCapitalMarketsLLCMember_doc" xml:lang="en-US">Chardan Capital Markets LLC [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonStrawnAgreementFairValueDisclosure" xlink:to="ATCH_WinstonStrawnAgreementFairValueDisclosure_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WinstonStrawnAgreementFairValueDisclosure_doc" xml:lang="en-US">Winston Strawn agreement fair value disclosure.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiabilityPrivateWarrants" xlink:to="ATCH_WarrantLiabilityPrivateWarrants_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantLiabilityPrivateWarrants_doc" xml:lang="en-US">Warrant liability private warrants.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" xlink:to="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure_doc" xml:lang="en-US">Earnout liability non current liability fair value disclosure.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharePurchaseCommitmentFairValueDisclosure" xlink:to="ATCH_SharePurchaseCommitmentFairValueDisclosure_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharePurchaseCommitmentFairValueDisclosure_doc" xml:lang="en-US">Share purchase commitment fair value disclosure.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingMember" xlink:to="ATCH_MergerFinancingMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingMember_doc" xml:lang="en-US">Merger Financing [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiabilityEquity" xlink:to="ATCH_WarrantLiabilityEquity_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantLiabilityEquity_doc" xml:lang="en-US">Warrant liability equity.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SettlementWinstonAndStrawnAgreementMember" xlink:to="ATCH_SettlementWinstonAndStrawnAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SettlementWinstonAndStrawnAgreementMember_doc" xml:lang="en-US">Settlement Winston And Strawn Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtPrincipalAmount" xlink:to="ATCH_DebtConversionOriginalDebtPrincipalAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtConversionOriginalDebtPrincipalAmount_doc" xml:lang="en-US">The amount of the original principal debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionAgreementMeasurementInput" xlink:to="ATCH_SubscriptionAgreementMeasurementInput_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubscriptionAgreementMeasurementInput_doc" xml:lang="en-US">Subscription agreement measurement input.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice" xlink:to="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentConvertibleConversionRateAsPercentageOfSpecifiedTradingDaysVolumeWeightedAverageSharePrice_doc" xml:lang="en-US">Debt instrument convertible conversion rate as percentage of specified trading days volume weighted average share price.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ChardanNoteMember" xlink:to="ATCH_ChardanNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ChardanNoteMember_doc" xml:lang="en-US">Chardan Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDisclosuresTextBlock" xlink:to="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDisclosuresTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDisclosuresTextBlock_doc" xml:lang="en-US">The entire disclosure on cash and securities segregated under federal and other regulation.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositRequired" xlink:to="ATCH_CashReserveDepositRequired_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashReserveDepositRequired_doc" xml:lang="en-US">Cash reserve required in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" xlink:to="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis_doc" xml:lang="en-US">Cash and Securities Segregated under Federal and Other Regulations [Axis]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CustomersTransactionsAndCreditBalancesMember" xlink:to="ATCH_CustomersTransactionsAndCreditBalancesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CustomersTransactionsAndCreditBalancesMember_doc" xml:lang="en-US">Customers Transactions and Credit Balances [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_QuantumVenturesLLCMember" xlink:to="ATCH_QuantumVenturesLLCMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_QuantumVenturesLLCMember_doc" xml:lang="en-US">Quantum Ventures LLC [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsAndRightsExpirationDateDescription" xlink:to="ATCH_WarrantsAndRightsExpirationDateDescription_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantsAndRightsExpirationDateDescription_doc" xml:lang="en-US">Warrants and rights expiration date description.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityMeasurementInput" xlink:to="ATCH_EarnoutLiabilityMeasurementInput_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnoutLiabilityMeasurementInput_doc" xml:lang="en-US">Earn out liability measurement input.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermNotesMember" xlink:to="ATCH_LongTermNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LongTermNotesMember_doc" xml:lang="en-US">Long Term Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SixthBoroughCapitalFundLpMember" xlink:to="ATCH_SixthBoroughCapitalFundLpMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SixthBoroughCapitalFundLpMember_doc" xml:lang="en-US">Sixth Borough Capital Fund Lp [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermNotesAndChardanNoteMember" xlink:to="ATCH_LongTermNotesAndChardanNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LongTermNotesAndChardanNoteMember_doc" xml:lang="en-US">Long Term Notes And Chardan Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GeneralCounselAndChiefFinancialOfficerMember" xlink:to="ATCH_GeneralCounselAndChiefFinancialOfficerMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_GeneralCounselAndChiefFinancialOfficerMember_doc" xml:lang="en-US">General Counsel And Chief Financial Officer [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SandipPatelMember" xlink:to="ATCH_SandipPatelMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SandipPatelMember_doc" xml:lang="en-US">Sandip Patel [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitsIssuedDuringPeriodValueNewIssues" xlink:to="ATCH_UnitsIssuedDuringPeriodValueNewIssues_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_UnitsIssuedDuringPeriodValueNewIssues_doc" xml:lang="en-US">Units issued during period value new issues.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SandipIPatelPAMember" xlink:to="ATCH_SandipIPatelPAMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SandipIPatelPAMember_doc" xml:lang="en-US">Sandip I.Patel, P.A [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNoteMember" xlink:to="ATCH_SecuredConvertibleNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SecuredConvertibleNoteMember_doc" xml:lang="en-US">Secured Convertible Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositLessThanAmountRequired" xlink:to="ATCH_CashReserveDepositLessThanAmountRequired_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashReserveDepositLessThanAmountRequired_doc" xml:lang="en-US">Represents the cash on deposit in the reserve account less than the amount required in accordance with federal regulations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ServicesLicenseAgreementMember" xlink:to="ATCH_ServicesLicenseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ServicesLicenseAgreementMember_doc" xml:lang="en-US">Services License Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingNoteMember" xlink:to="ATCH_MergerFinancingNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingNoteMember_doc" xml:lang="en-US">Merger Financing Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtInterestAmount" xlink:to="ATCH_DebtConversionOriginalDebtInterestAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtConversionOriginalDebtInterestAmount_doc" xml:lang="en-US">The amount of the original interest debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InterestSolutionsNoteMember" xlink:to="ATCH_InterestSolutionsNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InterestSolutionsNoteMember_doc" xml:lang="en-US">Interest Solutions Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_VendorMember" xlink:to="ATCH_VendorMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_VendorMember_doc" xml:lang="en-US">Vendor [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialFairValueCommitmentAmount" xlink:to="ATCH_InitialFairValueCommitmentAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialFairValueCommitmentAmount_doc" xml:lang="en-US">Initial fair value commitment amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TauAgreementMember" xlink:to="ATCH_TauAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TauAgreementMember_doc" xml:lang="en-US">Tau Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BrokerDealerNetCapitalRequirementSecRegulationTextBlock" xlink:to="ATCH_BrokerDealerNetCapitalRequirementSecRegulationTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_BrokerDealerNetCapitalRequirementSecRegulationTextBlock_doc" xml:lang="en-US">The entire disclosure on broker-dealer, net capital requirement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialFairValueCommitmentFee" xlink:to="ATCH_InitialFairValueCommitmentFee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialFairValueCommitmentFee_doc" xml:lang="en-US">Initial fair value commitment fee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommitmentAmountMeasurementInput" xlink:to="ATCH_CommitmentAmountMeasurementInput_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CommitmentAmountMeasurementInput_doc" xml:lang="en-US">Commitment amount measurement input.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits" xlink:to="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesConversionOfConvertibleNoteAndUnits_doc" xml:lang="en-US">Stock issued during period shares conversion of convertible note and units.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CommitmentAmountExpirationDateDescription" xlink:to="ATCH_CommitmentAmountExpirationDateDescription_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CommitmentAmountExpirationDateDescription_doc" xml:lang="en-US">Commitment amount expiration date description.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest" xlink:to="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartySharesConversionOfConvertibleSecuritiesInterest_doc" xml:lang="en-US">Stock transferred during period by related party shares conversion of convertible securities interest.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeLiabilityExpirationDateDescription" xlink:to="ATCH_DerivativeLiabilityExpirationDateDescription_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeLiabilityExpirationDateDescription_doc" xml:lang="en-US">Derivative liability expiration date description.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes" xlink:to="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtConversionConvertedInstrumentAmountConversionOfInterestOfConvertibleNotes_doc" xml:lang="en-US">Debt conversion converted instrument amount conversion of interest of convertible notes.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureMember" xlink:to="ATCH_DebentureMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebentureMember_doc" xml:lang="en-US">Debenture [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentInterestRateInEventOfDefault" xlink:to="ATCH_DebtInstrumentInterestRateInEventOfDefault_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentInterestRateInEventOfDefault_doc" xml:lang="en-US">Debt instrument interest rate in event of default.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashSegregatedCustomers" xlink:to="ATCH_CashSegregatedCustomers_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashSegregatedCustomers_doc" xml:lang="en-US">Represents information pertaining to cash segregated for customers.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuritiesPurchaseAgreementMember" xlink:to="ATCH_SecuritiesPurchaseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SecuritiesPurchaseAgreementMember_doc" xml:lang="en-US">Securities Purchase Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember" xlink:to="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TwoThousandTwentyFiveWarrantLiabilityMember_doc" xml:lang="en-US">Two Thousand Twenty Five Warrant Liability [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransactionCost" xlink:to="ATCH_TransactionCost_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TransactionCost_doc" xml:lang="en-US">Transaction cost.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA" xlink:to="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfWarrantsAllocatedForEquitySPA_doc" xml:lang="en-US">Initial value of warrants allocated for Equity SPA.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity" xlink:to="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquity_doc" xml:lang="en-US">Initial value of warrant issued as transaction cost under equity.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SeriesAConvertibleDebenturesMember" xlink:to="ATCH_SeriesAConvertibleDebenturesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SeriesAConvertibleDebenturesMember_doc" xml:lang="en-US">Series A Convertible Debentures [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AugustSecuritiesPurchaseAgreementMember" xlink:to="ATCH_AugustSecuritiesPurchaseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AugustSecuritiesPurchaseAgreementMember_doc" xml:lang="en-US">August Securities Purchase Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccruedInterest_doc" xml:lang="en-US">Fair value measurement with unobservable inputs reconciliation recurring basis liability accrued interest.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WilsonDavisSellersMember" xlink:to="ATCH_WilsonDavisSellersMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WilsonDavisSellersMember_doc" xml:lang="en-US">Wilson Davis Sellers [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount" xlink:to="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PercentageOfProceedsRaisedInExcessOfThresholdAmount_doc" xml:lang="en-US">Percentage of proceeds raised in excess of threshold amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IndividualAdvancesRequestedThresholdTradingDays" xlink:to="ATCH_IndividualAdvancesRequestedThresholdTradingDays_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_IndividualAdvancesRequestedThresholdTradingDays_doc" xml:lang="en-US">Individual advances requested threshold trading days.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InvestorWarrantsMember" xlink:to="ATCH_InvestorWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InvestorWarrantsMember_doc" xml:lang="en-US">Investor Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentWarrantsMember" xlink:to="ATCH_PlacementAgentWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PlacementAgentWarrantsMember_doc" xml:lang="en-US">Placement Agent Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PublicWarrantsMember" xlink:to="ATCH_PublicWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PublicWarrantsMember_doc" xml:lang="en-US">Public Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PrivateWarrantsMember" xlink:to="ATCH_PrivateWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PrivateWarrantsMember_doc" xml:lang="en-US">Private Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNoteWarrantsMember" xlink:to="ATCH_SecuredConvertibleNoteWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SecuredConvertibleNoteWarrantsMember_doc" xml:lang="en-US">Secured Convertible Note Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BrokerDealerTransactionsAndCreditBalancesMember" xlink:to="ATCH_BrokerDealerTransactionsAndCreditBalancesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_BrokerDealerTransactionsAndCreditBalancesMember_doc" xml:lang="en-US">Broker Dealer Transactions and Credit Balances [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWriteOff_doc" xml:lang="en-US">Fair value measurement with unobservable inputs reconciliation recurring basis liability write off.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LesseeOperatingLeasesOtherInformationTableTextBlock" xlink:to="ATCH_LesseeOperatingLeasesOtherInformationTableTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LesseeOperatingLeasesOtherInformationTableTextBlock_doc" xml:lang="en-US">Lessee Operating Leases Other Information [Table Text Block]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance" xlink:to="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_OperatingLeaseRightOfUseAssetBeginningBalance_doc" xml:lang="en-US">Operating lease right of use asset beginning balance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability" xlink:to="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RightOfUseAssetObtainedExchangeForOperatingLeaseLiability_doc" xml:lang="en-US">Right of use asset obtained exchange for operating lease liability</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DecreaseInOperatingLeaseRightOfUseAsset" xlink:to="ATCH_DecreaseInOperatingLeaseRightOfUseAsset_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DecreaseInOperatingLeaseRightOfUseAsset_doc" xml:lang="en-US">Decrease in operating lease right of use asset</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OperatingLeaseRightOfUseAssetEndingBalance" xlink:to="ATCH_OperatingLeaseRightOfUseAssetEndingBalance_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_OperatingLeaseRightOfUseAssetEndingBalance_doc" xml:lang="en-US">Operating Lease Right Of Use Asset Ending Balance</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity_doc" xml:lang="en-US">Fair value measurement with unobservable inputs reconciliation recurring basis liability transferred to equity.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests_doc" xml:lang="en-US">FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdvanceRequests</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnoutLiabilityMember" xlink:to="ATCH_EarnoutLiabilityMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnoutLiabilityMember_doc" xml:lang="en-US">Earnout Liability [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements" xlink:to="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementExecutivesAnnualBaseSalariesEntitlements_doc" xml:lang="en-US">Employmen tagreement executives annual base salariesen titlements.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonAndStrawnAgreementMember" xlink:to="ATCH_WinstonAndStrawnAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WinstonAndStrawnAgreementMember_doc" xml:lang="en-US">Winston &amp; Strawn Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingDerivativeMember" xlink:to="ATCH_MergerFinancingDerivativeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingDerivativeMember_doc" xml:lang="en-US">Merger Financing Derivative [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement_doc" xml:lang="en-US">FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognizedOnSettlement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ContingentGuaranteeMember" xlink:to="ATCH_ContingentGuaranteeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ContingentGuaranteeMember_doc" xml:lang="en-US">Contingent Guarantee [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShortTermSellerNotesMember" xlink:to="ATCH_ShortTermSellerNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ShortTermSellerNotesMember_doc" xml:lang="en-US">Short Term Seller Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExchanges_doc" xml:lang="en-US">Fair value measurement with unobservable inputs reconciliation recurring basis liability exchanges.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureDerivativeMember" xlink:to="ATCH_DebentureDerivativeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebentureDerivativeMember_doc" xml:lang="en-US">Debenture Derivative [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNoteDerivativeMember" xlink:to="ATCH_ConvertibleNoteDerivativeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNoteDerivativeMember_doc" xml:lang="en-US">Convertible Note Derivative [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AmortizationOfDebtDiscount" xlink:to="ATCH_AmortizationOfDebtDiscount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AmortizationOfDebtDiscount_doc" xml:lang="en-US">Amortization of debt discount</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermSellerNotesMember" xlink:to="ATCH_LongTermSellerNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LongTermSellerNotesMember_doc" xml:lang="en-US">Long Term Seller Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised_doc" xml:lang="en-US">FairValueMeasurementWithUnobservableInputsReconciliationRecurringOfFairValueOfWarrantsExercised</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAwardsEligibleToBeReceived_doc" xml:lang="en-US">Share based compensation arrangement by share based payment award number of awards eligible to be received.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPerAwardPercent_doc" xml:lang="en-US">Share based compensation arrangement by share based payment award number of shares per award percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice" xlink:to="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsVolumeWeightedAverageTriggerPrice_doc" xml:lang="en-US">Share based compensation arrangement by share based payment award grants volume weighted average trigger price.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardOneMember" xlink:to="ATCH_PerformanceBasedStockAwardOneMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardOneMember_doc" xml:lang="en-US">Performance Based Stock Award One [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardTwoMember" xlink:to="ATCH_PerformanceBasedStockAwardTwoMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardTwoMember_doc" xml:lang="en-US">Performance Based Stock Award Two [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueFromStockLocateFees" xlink:to="ATCH_RevenueFromStockLocateFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RevenueFromStockLocateFees_doc" xml:lang="en-US">Revenue from stock locate fees</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardThreeMember" xlink:to="ATCH_PerformanceBasedStockAwardThreeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardThreeMember_doc" xml:lang="en-US">Performance Based Stock Award Three [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardFourMember" xlink:to="ATCH_PerformanceBasedStockAwardFourMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardFourMember_doc" xml:lang="en-US">Performance Based Stock Award Four [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardFiveMember" xlink:to="ATCH_PerformanceBasedStockAwardFiveMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardFiveMember_doc" xml:lang="en-US">Performance Based Stock Award Five [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedStockAwardMember" xlink:to="ATCH_PerformanceBasedStockAwardMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedStockAwardMember_doc" xml:lang="en-US">Performance Based Stock Award [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheOneMember" xlink:to="ATCH_TrancheOneMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TrancheOneMember_doc" xml:lang="en-US">Tranche One [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheTwoMember" xlink:to="ATCH_TrancheTwoMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TrancheTwoMember_doc" xml:lang="en-US">Tranche Two [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheThreeMember" xlink:to="ATCH_TrancheThreeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TrancheThreeMember_doc" xml:lang="en-US">Tranche Three [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheFourMember" xlink:to="ATCH_TrancheFourMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TrancheFourMember_doc" xml:lang="en-US">Tranche Four [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TrancheFiveMember" xlink:to="ATCH_TrancheFiveMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TrancheFiveMember_doc" xml:lang="en-US">Tranche Five [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueIssuedForSoftwareAsServiceUnderLicenseAgreement_doc" xml:lang="en-US">The number of shares issued in lieu of cash for software as services under license agreement contributed to the entity.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodShareIssuedForSoftwareAsServiceUnderLicenseAgreement_doc" xml:lang="en-US">Value of stock issued in lieu of cash for software as services under license agreement contributed to the entity.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation" xlink:to="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligation_doc" xml:lang="en-US">Value of stock issued for settled vendor obligations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligation_doc" xml:lang="en-US">Number of shares issued for settled vendor obligations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:to="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_doc" xml:lang="en-US">Amount of increase (decrease) in the fair value of convertible notes derivatives gain (loss) recognized in the income statement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmbeddedDerivativeGainLossOnDebenture" xlink:to="ATCH_EmbeddedDerivativeGainLossOnDebenture_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmbeddedDerivativeGainLossOnDebenture_doc" xml:lang="en-US">Amount of increase (decrease) in the fair value of embedded derivative relating to debenture recognized in the income statement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfEarnoutLiability" xlink:to="ATCH_FairValueAdjustmentOfEarnoutLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfEarnoutLiability_doc" xml:lang="en-US">Amount of expense (income) related to adjustment to fair value of earnout liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfStockPayables" xlink:to="ATCH_FairValueAdjustmentOfStockPayables_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfStockPayables_doc" xml:lang="en-US">Amount of expense (income) related to adjustment to fair value of stock payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount" xlink:to="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfSharePurchaseCommitmentAmount_doc" xml:lang="en-US">Amount of expense (income) related to adjustment to share purchase commitment amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" xlink:to="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable_doc" xml:lang="en-US">The change in the commissions and payroll taxes payable recorded on the balance sheet, which is needed to adjust net income to arrive at net cash flows provided by or used in operations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncreaseDecreaseInTradingDeposits" xlink:to="ATCH_IncreaseDecreaseInTradingDeposits_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_IncreaseDecreaseInTradingDeposits_doc" xml:lang="en-US">The increase (decrease) during the reporting period in trading deposits.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RepaymentsOfSecurityConvertibleNotes" xlink:to="ATCH_RepaymentsOfSecurityConvertibleNotes_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RepaymentsOfSecurityConvertibleNotes_doc" xml:lang="en-US">Transaction cost paid with Security Convertible Notes.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ProceedsFromIssuanceOfDebenture" xlink:to="ATCH_ProceedsFromIssuanceOfDebenture_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ProceedsFromIssuanceOfDebenture_doc" xml:lang="en-US">Proceeds from issuance of debenture.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ProceedsFromNonInterestBearingAdvances" xlink:to="ATCH_ProceedsFromNonInterestBearingAdvances_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ProceedsFromNonInterestBearingAdvances_doc" xml:lang="en-US">Proceeds from non interest bearing advances.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PaymentOnWinstonStrawnSettlementAgreement" xlink:to="ATCH_PaymentOnWinstonStrawnSettlementAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PaymentOnWinstonStrawnSettlementAgreement_doc" xml:lang="en-US">Payment on winston strawn settlement agreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability" xlink:to="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NoncashOrPartOfNoncashChangesInGoodwillDueToChangeInDeferredTaxLiability_doc" xml:lang="en-US">It represents the information about noncash or part of noncash changes in goodwill due to change in deferred tax liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee" xlink:to="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtConversionOriginalDebtAmountContingentGuarantee_doc" xml:lang="en-US">Debt conversion original debt amount contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MergerFinancingConvertibleNoteNoncurrent" xlink:to="ATCH_MergerFinancingConvertibleNoteNoncurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MergerFinancingConvertibleNoteNoncurrent_doc" xml:lang="en-US">Merger financing convertible note non current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnamortizedDiscountPremiumContingentGuarantee" xlink:to="ATCH_UnamortizedDiscountPremiumContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_UnamortizedDiscountPremiumContingentGuarantee_doc" xml:lang="en-US">Unamortized discount premium contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee" xlink:to="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AmortizationOfDebtDiscountPremiumContingentGuarantee_doc" xml:lang="en-US">Amortization of debt discount premium contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InterestOnContingentGuarantee" xlink:to="ATCH_InterestOnContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InterestOnContingentGuarantee_doc" xml:lang="en-US">Interest on contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesAvailableUnderSharePurchaseAgreement" xlink:to="ATCH_SharesAvailableUnderSharePurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesAvailableUnderSharePurchaseAgreement_doc" xml:lang="en-US">Shares available under share purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantLiability" xlink:to="ATCH_WarrantLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantLiability_doc" xml:lang="en-US">Warrant liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RevenueNotFromStockLocateFees" xlink:to="ATCH_RevenueNotFromStockLocateFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RevenueNotFromStockLocateFees_doc" xml:lang="en-US">Revenue not from stock locate fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DevelopedTechnologyMember" xlink:to="ATCH_DevelopedTechnologyMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DevelopedTechnologyMember_doc" xml:lang="en-US">Developed Technology [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ImpairmentCharges" xlink:to="ATCH_ImpairmentCharges_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ImpairmentCharges_doc" xml:lang="en-US">Impairment charges.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee" xlink:to="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_doc" xml:lang="en-US">Derivative gain loss on fair value of contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnSecuredConvertibleNote" xlink:to="ATCH_DerivativeGainLossOnSecuredConvertibleNote_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnSecuredConvertibleNote_doc" xml:lang="en-US">Derivative gain loss on secured convertible note.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionAgreementMember" xlink:to="ATCH_SubscriptionAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubscriptionAgreementMember_doc" xml:lang="en-US">Subscription Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing" xlink:to="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnFairValueOfMergerFinancing_doc" xml:lang="en-US">Derivative gain loss on fair value of merger financing.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability" xlink:to="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnFairValueOfEarnoutLiability_doc" xml:lang="en-US">Derivative gain loss on fair value of earnout liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares" xlink:to="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_IncrementalCommonSharesAttributableDueToContingentlyIssuableShares_doc" xml:lang="en-US">Incremental common shares attributable due to contingently issuable shares.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TimeBasedStockAwardsMember" xlink:to="ATCH_TimeBasedStockAwardsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TimeBasedStockAwardsMember_doc" xml:lang="en-US">Time Based Stock Awards [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PerformanceBasedMarketConditionStockAwardsMember" xlink:to="ATCH_PerformanceBasedMarketConditionStockAwardsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PerformanceBasedMarketConditionStockAwardsMember_doc" xml:lang="en-US">Performance Based Market Condition Stock Awards [Mem</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionReceivableMember" xlink:to="ATCH_SubscriptionReceivableMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubscriptionReceivableMember_doc" xml:lang="en-US">Subscription Receivable [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsLiabilityMember" xlink:to="ATCH_WarrantsLiabilityMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantsLiabilityMember_doc" xml:lang="en-US">Warrants Liability [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RiskManagementPolicyTextBlock" xlink:to="ATCH_RiskManagementPolicyTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RiskManagementPolicyTextBlock_doc" xml:lang="en-US">Risk Management [Policy Text Block]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations" xlink:to="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueSettledVendorObligations_doc" xml:lang="en-US">Stock issued during period value settled vendor obligations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettledVendorObligations_doc" xml:lang="en-US">Stock issued during period shares settled vendor obligations.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NewAccountingPronouncementsNotYetAdoptedPolicyPolicyTextBlock" xlink:to="ATCH_NewAccountingPronouncementsNotYetAdoptedPolicyPolicyTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NewAccountingPronouncementsNotYetAdoptedPolicyPolicyTextBlock_doc" xml:lang="en-US">New Accounting Pronouncements Not Yet Adopted Policy [Policy Text Block]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtConversionsOriginalDebtInterestAmount" xlink:to="ATCH_DebtConversionsOriginalDebtInterestAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtConversionsOriginalDebtInterestAmount_doc" xml:lang="en-US">Debt conversions original debt interest amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesIssuableUponDebtConversion" xlink:to="ATCH_NumberOfSharesIssuableUponDebtConversion_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NumberOfSharesIssuableUponDebtConversion_doc" xml:lang="en-US">Number of shares issuable upon debt conversion.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_JonesTradingNoteMember" xlink:to="ATCH_JonesTradingNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_JonesTradingNoteMember_doc" xml:lang="en-US">Jones Trading Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ToppanNoteMember" xlink:to="ATCH_ToppanNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ToppanNoteMember_doc" xml:lang="en-US">Toppan Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_HanirePurchaseAgreementMember" xlink:to="ATCH_HanirePurchaseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_HanirePurchaseAgreementMember_doc" xml:lang="en-US">Hanire Purchase Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PremiumFinncingAgreementMember" xlink:to="ATCH_PremiumFinncingAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PremiumFinncingAgreementMember_doc" xml:lang="en-US">Premium Finncing Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SeptemberSecuritiesPurchaseAgreementMember" xlink:to="ATCH_SeptemberSecuritiesPurchaseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SeptemberSecuritiesPurchaseAgreementMember_doc" xml:lang="en-US">September Securities Purchase Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentDiscountPercentage" xlink:to="ATCH_DebtInstrumentDiscountPercentage_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentDiscountPercentage_doc" xml:lang="en-US">Debt instrument discount percentage.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_QualifiedFinancingThresholdGrossProceeds" xlink:to="ATCH_QualifiedFinancingThresholdGrossProceeds_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_QualifiedFinancingThresholdGrossProceeds_doc" xml:lang="en-US">Qualified financing threshold gross proceeds.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentAggregateDiscountOnIssuance" xlink:to="ATCH_DebtInstrumentAggregateDiscountOnIssuance_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentAggregateDiscountOnIssuance_doc" xml:lang="en-US">Debt instrument aggregate discount on issuance.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentOriginalIssueDiscount" xlink:to="ATCH_DebtInstrumentOriginalIssueDiscount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentOriginalIssueDiscount_doc" xml:lang="en-US">Debt instrument original issue discount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_UnitPricePerShare" xlink:to="ATCH_UnitPricePerShare_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_UnitPricePerShare_doc" xml:lang="en-US">Unit price per share.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveWarrantMember" xlink:to="ATCH_TwoThousandTwentyFiveWarrantMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TwoThousandTwentyFiveWarrantMember_doc" xml:lang="en-US">2025 Warrant [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice" xlink:to="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ClassOfWarrantOrRightExercisePriceDeterminationNumberOfClosingBidPrice_doc" xml:lang="en-US">Class of warrant or right exercise price determination number of closing bid price.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination" xlink:to="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ClassOfWarrantOrRightNumberOfDaysForExercisePriceDetermination_doc" xml:lang="en-US">Class of warrant or right number of days for exercise price determination.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingParticipationRightTriggerPeriod" xlink:to="ATCH_EquityFinancingParticipationRightTriggerPeriod_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EquityFinancingParticipationRightTriggerPeriod_doc" xml:lang="en-US">Equity financing participation right trigger period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering" xlink:to="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EquityFinancingMinimumThresholdInvestmentForFutureOffering_doc" xml:lang="en-US">Equity financing minimum threshold investment for future offering.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityFinancingMaximumReinvestmentPercentage" xlink:to="ATCH_EquityFinancingMaximumReinvestmentPercentage_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EquityFinancingMaximumReinvestmentPercentage_doc" xml:lang="en-US">Equity financing maximum reinvestment percentage.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromNotesPayable_doc" xml:lang="en-US">Placement agent fee rate gross proceeds from notes payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToExistingInvestors_doc" xml:lang="en-US">Placement agent fee rate gross proceeds from units sold to existing investors.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors" xlink:to="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PlacementAgentFeeRateGrossProceedsFromUnitsSoldToNewInvestors_doc" xml:lang="en-US">Placement agent fee rate gross proceeds from units sold to new investors.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal" xlink:to="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WarrantsToPurchaseOfCommonStockTransactionCostTotal_doc" xml:lang="en-US">Warrants to purchase of common stock transaction cost total.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FormerOfficersAndDirectorsMember" xlink:to="ATCH_FormerOfficersAndDirectorsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FormerOfficersAndDirectorsMember_doc" xml:lang="en-US">Former Officers And Directors [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositInExcessOfAmountRequired" xlink:to="ATCH_CashReserveDepositInExcessOfAmountRequired_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashReserveDepositInExcessOfAmountRequired_doc" xml:lang="en-US">Cash reserve deposit in excess of amount required.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashReserveDepositWithdrawn" xlink:to="ATCH_CashReserveDepositWithdrawn_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashReserveDepositWithdrawn_doc" xml:lang="en-US">Cash reserve deposit withdrawn.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration" xlink:to="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityFairValueOfSettlementConsideration_doc" xml:lang="en-US">Fair value measurement with unobservable inputs reconciliation recurring basis liability fair value of settlement consideration.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization" xlink:to="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LossesOnReceivableFromBrokerDealerAndClearingOrganization_doc" xml:lang="en-US">Losses on receivable from broker dealer and clearing organization.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_OtherRevenue" xlink:to="ATCH_OtherRevenue_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_OtherRevenue_doc" xml:lang="en-US">Other revenue.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedForContingentGuarantee" xlink:to="ATCH_StockIssuedForContingentGuarantee_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedForContingentGuarantee_doc" xml:lang="en-US">Stock issued for contingent guarantee.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvenienceFeePercentage" xlink:to="ATCH_ConvenienceFeePercentage_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvenienceFeePercentage_doc" xml:lang="en-US">Convenience fee percentage.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesIssuedForContingentConsideration" xlink:to="ATCH_ConvertibleNotesIssuedForContingentConsideration_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNotesIssuedForContingentConsideration_doc" xml:lang="en-US">Convertible notes issued for contingent consideration.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ScheduleOfShareBasedPaymentAwardPerformanceSharesValuationAssumptionsTableTextBlock" xlink:to="ATCH_ScheduleOfShareBasedPaymentAwardPerformanceSharesValuationAssumptionsTableTextBlock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ScheduleOfShareBasedPaymentAwardPerformanceSharesValuationAssumptionsTableTextBlock_doc" xml:lang="en-US">Schedule Of Share Based Payment Award Performance Shares Valuation Assumptions [Table Text Block]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LongTermMergerFinancingNet" xlink:to="ATCH_LongTermMergerFinancingNet_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LongTermMergerFinancingNet_doc" xml:lang="en-US">Long term merger financing net.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SellerNotesMember" xlink:to="ATCH_SellerNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SellerNotesMember_doc" xml:lang="en-US">Seller Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_IncentivePlanMember" xlink:to="ATCH_IncentivePlanMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_IncentivePlanMember_doc" xml:lang="en-US">Incentive Plan [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PromissoryNoteMember" xlink:to="ATCH_PromissoryNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PromissoryNoteMember_doc" xml:lang="en-US">Promissory Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PromissoryNoteOneMember" xlink:to="ATCH_PromissoryNoteOneMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PromissoryNoteOneMember_doc" xml:lang="en-US">Promissory Note One [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability" xlink:to="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringNoncashExerciseOfWarrantLiability_doc" xml:lang="en-US">Stock issued during noncash exercise of warrant liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability" xlink:to="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringSharesNoncashExerciseOfWarrantLiability_doc" xml:lang="en-US">Stock issued during shares noncash exercise of warrant liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions" xlink:to="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodReversalOfExciseTaxRelatedToPriorShareholderRedemptions_doc" xml:lang="en-US">Stock issued during period reversal of excise tax related to prior shareholder redemptions.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WinstonStrawnLLPMember" xlink:to="ATCH_WinstonStrawnLLPMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WinstonStrawnLLPMember_doc" xml:lang="en-US">Winston Strawn L L P [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ValueOfSharesIssuableForServicesInEachInstallment" xlink:to="ATCH_ValueOfSharesIssuableForServicesInEachInstallment_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ValueOfSharesIssuableForServicesInEachInstallment_doc" xml:lang="en-US">Value of shares issuable for services in each installment.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionPayableLiabilityNoncurrent" xlink:to="ATCH_SubscriptionPayableLiabilityNoncurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubscriptionPayableLiabilityNoncurrent_doc" xml:lang="en-US">Subscription payable liability noncurrent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SettlementAgreementMember" xlink:to="ATCH_SettlementAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SettlementAgreementMember_doc" xml:lang="en-US">Settlement Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossOnSettlement" xlink:to="ATCH_LossOnSettlement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LossOnSettlement_doc" xml:lang="en-US">Loss on settlement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtlasclearInc.Member" xlink:to="ATCH_AtlasclearInc.Member_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AtlasclearInc.Member_doc" xml:lang="en-US">Atlasclear Inc [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable" xlink:to="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnOutSharesMaximumNumberOfSharesIssuable_doc" xml:lang="en-US">Earnout shares maximum number of shares issuable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" xlink:to="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares_doc" xml:lang="en-US">Threshold period from closing to achieve milestones considered for issuance of earnout shares.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable" xlink:to="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EarnOutSharesMaximumAmountOfSharesIssuable_doc" xml:lang="en-US">Earn out shares maximum amount of shares issuable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtlasFintechMember" xlink:to="ATCH_AtlasFintechMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AtlasFintechMember_doc" xml:lang="en-US">Atlas Fintech [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PeriodForMeasurementOfRevenueTargets" xlink:to="ATCH_PeriodForMeasurementOfRevenueTargets_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PeriodForMeasurementOfRevenueTargets_doc" xml:lang="en-US">Period for measurement of revenue targets.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementTermOfEmployment" xlink:to="ATCH_EmploymentAgreementTermOfEmployment_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementTermOfEmployment_doc" xml:lang="en-US">Employment agreement term of employment.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_JohnSchaibleAndCraigRidenhourMember" xlink:to="ATCH_JohnSchaibleAndCraigRidenhourMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_JohnSchaibleAndCraigRidenhourMember_doc" xml:lang="en-US">John Schaible and Craig Ridenhour [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementTermOfRenewal" xlink:to="ATCH_EmploymentAgreementTermOfRenewal_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementTermOfRenewal_doc" xml:lang="en-US">Employment agreement term of renewal.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearOne_doc" xml:lang="en-US">Employment agreement annual base salary year one.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearTwo_doc" xml:lang="en-US">Employment agreement annual base salary year two.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree" xlink:to="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementAnnualBaseSalaryYearThree_doc" xml:lang="en-US">Employment agreement annual base salary year three.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayable" xlink:to="ATCH_PercentageOfBonusPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PercentageOfBonusPayable_doc" xml:lang="en-US">Percentage of bonus payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PayableImmediatelyMember" xlink:to="ATCH_PayableImmediatelyMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PayableImmediatelyMember_doc" xml:lang="en-US">Payable Immediately [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MinimumQualifiedCumulativeFinancingAmount" xlink:to="ATCH_MinimumQualifiedCumulativeFinancingAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MinimumQualifiedCumulativeFinancingAmount_doc" xml:lang="en-US">Minimum qualified cumulative financing amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayableFourthQuarter" xlink:to="ATCH_PercentageOfBonusPayableFourthQuarter_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PercentageOfBonusPayableFourthQuarter_doc" xml:lang="en-US">Percentage of bonus payable fourth quarter.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PayableAtEndOfFirstQuarter2026Member" xlink:to="ATCH_PayableAtEndOfFirstQuarter2026Member_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PayableAtEndOfFirstQuarter2026Member_doc" xml:lang="en-US">Payable At End Of First Quarter 2026 [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PercentageOfBonusPayableFirstQuarter" xlink:to="ATCH_PercentageOfBonusPayableFirstQuarter_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PercentageOfBonusPayableFirstQuarter_doc" xml:lang="en-US">Percentage of bonus payable first quarter.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementStockGrants" xlink:to="ATCH_EmploymentAgreementStockGrants_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementStockGrants_doc" xml:lang="en-US">Employment agreement stock grants.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrantedOnSigningMember" xlink:to="ATCH_GrantedOnSigningMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_GrantedOnSigningMember_doc" xml:lang="en-US">Granted On Signing [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_GrantedOnJuly12026Member" xlink:to="ATCH_GrantedOnJuly12026Member_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_GrantedOnJuly12026Member_doc" xml:lang="en-US">Granted On July 1 2026 [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementNumberOfStockAwards" xlink:to="ATCH_EmploymentAgreementNumberOfStockAwards_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementNumberOfStockAwards_doc" xml:lang="en-US">Employment agreement number of stock awards.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward" xlink:to="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ThresholdPercentageOfOutstandingSharesForDeterminingStockAward_doc" xml:lang="en-US">Threshold percentage of outstanding shares for determining stock award.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WeightedAveragePrice" xlink:to="ATCH_WeightedAveragePrice_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WeightedAveragePrice_doc" xml:lang="en-US">Weighted average price.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneOneMember" xlink:to="ATCH_StockPriceMilestoneOneMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPriceMilestoneOneMember_doc" xml:lang="en-US">Stock Price Milestone One [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneTwoMember" xlink:to="ATCH_StockPriceMilestoneTwoMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPriceMilestoneTwoMember_doc" xml:lang="en-US">Stock Price Milestone Two [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneThreeMember" xlink:to="ATCH_StockPriceMilestoneThreeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPriceMilestoneThreeMember_doc" xml:lang="en-US">Stock Price Milestone Three [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneFourMember" xlink:to="ATCH_StockPriceMilestoneFourMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPriceMilestoneFourMember_doc" xml:lang="en-US">Stock Price Milestone Four [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPriceMilestoneFiveMember" xlink:to="ATCH_StockPriceMilestoneFiveMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPriceMilestoneFiveMember_doc" xml:lang="en-US">Stock Price Milestone Five [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal" xlink:to="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementThresholdPeriodOfWrittenNoticeOfNonRenewal_doc" xml:lang="en-US">Employment agreement threshold period of written notice of non renewal.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice" xlink:to="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredCalculatingStockTradingPrice_doc" xml:lang="en-US">Threshold trading days over which volume weighted average stock price considered calculating stock trading price.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EmploymentAgreementOneTimeSignInBonusPaid" xlink:to="ATCH_EmploymentAgreementOneTimeSignInBonusPaid_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EmploymentAgreementOneTimeSignInBonusPaid_doc" xml:lang="en-US">Employment agreement one time sign in bonus paid.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets net adjustments federal amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementPayable_doc" xml:lang="en-US">Software development and license agreement payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementUpfrontFeesPayable_doc" xml:lang="en-US">Software development and license agreement upfront fees payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsNetAdjustmentsFederalPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets net adjustments federal percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage" xlink:to="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtInstrumentInterestRateUnusedPortionStatedPercentage_doc" xml:lang="en-US">Debt instrument interest rate unused portion stated percentage.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_WilsonDavisCoIncMember" xlink:to="ATCH_WilsonDavisCoIncMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_WilsonDavisCoIncMember_doc" xml:lang="en-US">Wilson Davis Co Inc [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_LossContingencyReductionInDamageAwarded" xlink:to="ATCH_LossContingencyReductionInDamageAwarded_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_LossContingencyReductionInDamageAwarded_doc" xml:lang="en-US">Loss contingency reduction in damage awarded.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementFirstMonthPayable_doc" xml:lang="en-US">Software development and license agreement first month payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementRemainingMonthPayable_doc" xml:lang="en-US">Software development and license agreement remaining month payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebtIssuanceCosts" xlink:to="ATCH_DebtIssuanceCosts_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebtIssuanceCosts_doc" xml:lang="en-US">Debt issuance costs.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote" xlink:to="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DerivativeGainLossOnFairValueOfSecuredConvertibleNote_doc" xml:lang="en-US">Derivative gain loss on fair value of secured convertible note.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSubscriptionAgreement" xlink:to="ATCH_FairValueAdjustmentOfSubscriptionAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfSubscriptionAgreement_doc" xml:lang="en-US">Fair value adjustment of subscription agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TransactionCostsAttributedToWarrantLiability" xlink:to="ATCH_TransactionCostsAttributedToWarrantLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TransactionCostsAttributedToWarrantLiability_doc" xml:lang="en-US">Transaction costs attributed to warrant liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConsultingExpensePaidWithStock" xlink:to="ATCH_ConsultingExpensePaidWithStock_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConsultingExpensePaidWithStock_doc" xml:lang="en-US">Consulting expense paid with stock.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation" xlink:to="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ValueOfSharesTransferredByRelatedPartiesToSettleObligation_doc" xml:lang="en-US">Value of shares transferred by related parties to settle obligation.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable" xlink:to="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesIssuedToRelatedPartyForSettlementOfAccountsPayable_doc" xml:lang="en-US">Shares issued to related party for settlement of accounts payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForCommercialBankAcquisitionExtension" xlink:to="ATCH_SharesIssuedForCommercialBankAcquisitionExtension_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesIssuedForCommercialBankAcquisitionExtension_doc" xml:lang="en-US">Shares issued for commercial bank acquisition extension.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing" xlink:to="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfDerivativeIncludedInMergerFinancing_doc" xml:lang="en-US">Initial value of derivative included in merger financing.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PromissoryNoteIssuedUnderInsurancePremium" xlink:to="ATCH_PromissoryNoteIssuedUnderInsurancePremium_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PromissoryNoteIssuedUnderInsurancePremium_doc" xml:lang="en-US">Promissory note issued under insurance premium.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PrepaidStockBasedCompensation" xlink:to="ATCH_PrepaidStockBasedCompensation_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PrepaidStockBasedCompensation_doc" xml:lang="en-US">Prepaid stock based compensation.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedToPurchasePacsquare" xlink:to="ATCH_SharesIssuedToPurchasePacsquare_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesIssuedToPurchasePacsquare_doc" xml:lang="en-US">Shares issued to purchase pacsquare.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement" xlink:to="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ReceivableFromSharesAdvancedUnderTauAgreement_doc" xml:lang="en-US">Receivable from shares advanced under tau agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of long term and short term investor notes amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayable_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of stock payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockPayablePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of stock payable percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PlacementAgentMember" xlink:to="ATCH_PlacementAgentMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PlacementAgentMember_doc" xml:lang="en-US">Placement Agent [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeeAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of at the commitment fee amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheCommitmentFeePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of at the commitment fee percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredNoteWarrantsMember" xlink:to="ATCH_SecuredNoteWarrantsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SecuredNoteWarrantsMember_doc" xml:lang="en-US">Secured Note Warrants [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayableAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of wdco share payable amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSharePayablePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of wdco share payable percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm" xlink:to="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SoftwareDevelopmentAndLicenseAgreementTerm_doc" xml:lang="en-US">Software development and license agreement term.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote" xlink:to="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfDerivativeIncludedInConvertibleNote_doc" xml:lang="en-US">Initial value of derivative included in convertible note.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfDerivativeIncludedInDebenture" xlink:to="ATCH_InitialValueOfDerivativeIncludedInDebenture_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfDerivativeIncludedInDebenture_doc" xml:lang="en-US">Initial value of derivative included in debenture.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ReversalOfExciseTax" xlink:to="ATCH_ReversalOfExciseTax_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ReversalOfExciseTax_doc" xml:lang="en-US">Reversal of excise tax.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesTransferredToEquitySpa" xlink:to="ATCH_ConvertibleNotesTransferredToEquitySpa_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNotesTransferredToEquitySpa_doc" xml:lang="en-US">Convertible notes transferred to equity spa.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa" xlink:to="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialValueOfWarrantIssuedAsTransactionCostUnderEquitySpa_doc" xml:lang="en-US">Initial value of warrant issued as transaction cost under equity spa.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement" xlink:to="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesIssuedForWinstonStrawnSettlementAgreement_doc" xml:lang="en-US">Shares issued for winston strawn settlement agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability" xlink:to="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesIssuedForNoncashExerciseOfWarrantLiability_doc" xml:lang="en-US">Shares issued for non cash exercise of warrant liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities" xlink:to="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RightofuseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities_doc" xml:lang="en-US">Right of use assets obtained in exchange for new operating lease liabilities.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquityAwardAgreementsMember" xlink:to="ATCH_EquityAwardAgreementsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EquityAwardAgreementsMember_doc" xml:lang="en-US">Equity Award Agreements [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockOptionsMember" xlink:to="ATCH_StockOptionsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockOptionsMember_doc" xml:lang="en-US">Stock Options [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MessrsSchaibleMember" xlink:to="ATCH_MessrsSchaibleMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MessrsSchaibleMember_doc" xml:lang="en-US">Messrs Schaible [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_RidenhourMember" xlink:to="ATCH_RidenhourMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_RidenhourMember_doc" xml:lang="en-US">Ridenhour [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of warrant liability amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNotePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of wdco sellers convertible note percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetsNetOperatingLoss" xlink:to="ATCH_DeferredTaxAssetsNetOperatingLoss_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxAssetsNetOperatingLoss_doc" xml:lang="en-US">Deferred tax assets net operating loss.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensationPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of stock compensation percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset" xlink:to="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxLiabilitiesRightOfUseLeaseAsset_doc" xml:lang="en-US">Deferred tax liabilities right of use lease asset.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesStateTaxCurrent" xlink:to="ATCH_DeferredTaxLiabilitiesStateTaxCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxCurrent_doc" xml:lang="en-US">Deferred tax liabilities state tax current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiabilitiesStateTaxDeferred" xlink:to="ATCH_DeferredTaxLiabilitiesStateTaxDeferred_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxLiabilitiesStateTaxDeferred_doc" xml:lang="en-US">Deferred tax liabilities state tax deferred.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation state and local minimum income taxes percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStatePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets valuation allowance state percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets valuation allowance federal percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SingleReportableSegmentMember" xlink:to="ATCH_SingleReportableSegmentMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SingleReportableSegmentMember_doc" xml:lang="en-US">Single Reportable Segment [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation acquisition goodwill and intangible assets percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SixSubordinatedLoanAgreementsMember" xlink:to="ATCH_SixSubordinatedLoanAgreementsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SixSubordinatedLoanAgreementsMember_doc" xml:lang="en-US">Six Subordinated Loan Agreements [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubordinatedDemandNotesMember" xlink:to="ATCH_SubordinatedDemandNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubordinatedDemandNotesMember_doc" xml:lang="en-US">Subordinated Demand Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfLongTermAndShortTermInvestorNotesPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of long term and short term investor notes percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of warrant liability percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SharesToBeIssuedAmount" xlink:to="ATCH_SharesToBeIssuedAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SharesToBeIssuedAmount_doc" xml:lang="en-US">Shares to be issued amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_AtTheMarketAgreementMember" xlink:to="ATCH_AtTheMarketAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_AtTheMarketAgreementMember_doc" xml:lang="en-US">At The Market Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesTransferredByRelatedParty" xlink:to="ATCH_NumberOfSharesTransferredByRelatedParty_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NumberOfSharesTransferredByRelatedParty_doc" xml:lang="en-US">Number of shares transferred by related party.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation nondeductible expense meals amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes_doc" xml:lang="en-US">Stock issued during period shares settlement of related party advances and promissory notes.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation nondeductible expense meals percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockOptionPriceTriggerAdjustmentsDescription" xlink:to="ATCH_StockOptionPriceTriggerAdjustmentsDescription_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockOptionPriceTriggerAdjustmentsDescription_doc" xml:lang="en-US">Stock option price trigger adjustments description.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation nondeductible expense entertainment amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of convertible note amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of earnout liability amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement" xlink:to="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockPurchasedDuringPeriodSharesSharePurchaseAgreement_doc" xml:lang="en-US">Stock purchased during period shares share purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DebentureAgreementMember" xlink:to="ATCH_DebentureAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DebentureAgreementMember_doc" xml:lang="en-US">Debenture Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of subscription agreement amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount" xlink:to="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_InitialSharesIssuedValuePurchaseCommitmentAmount_doc" xml:lang="en-US">Initial shares issued value purchase commitment amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPA_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of convertible note spa.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement" xlink:to="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PurchaseOfSharesUnderSharePurchaseAgreement_doc" xml:lang="en-US">Purchase of shares under share purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenture_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of debenture.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SaleOfSharesUnderSharePurchaseAgreement" xlink:to="ATCH_SaleOfSharesUnderSharePurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreement_doc" xml:lang="en-US">Sale of shares under share purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNote_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of secured convertible note.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAtTheMarketAgreementAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of at the market agreement amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares" xlink:to="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SaleOfSharesUnderSharePurchaseAgreementShares_doc" xml:lang="en-US">Sale of shares under share purchase agreement shares.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWdcoSellersConvertibleNoteAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of wdco sellers convertible note amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfStockCompensation_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of stock compensation.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationStateAndLocalMinimumIncomeTaxesAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation state and local minimum income taxes amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceStateAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets valuation allowance state amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceFederalAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation change in deferred tax assets valuation allowance federal amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationAcquisitionGoodwillAndIntangibleAssetsAmount_doc" xml:lang="en-US">Effective income tax rate reconciliation acquisition goodwill and intangible assets amount.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNoteMember" xlink:to="ATCH_ConvertibleNoteMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNoteMember_doc" xml:lang="en-US">Convertible Note [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEntertainmentPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation nondeductible expense entertainment percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNotePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of convertible note percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfEarnoutLiabilityPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of earnout liability percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSubscriptionAgreementPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of subscription agreement percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfConvertibleNoteSPAPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of convertible note spa percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfDebenturePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of debenture percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetsFixedAssets" xlink:to="ATCH_DeferredTaxAssetsFixedAssets_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxAssetsFixedAssets_doc" xml:lang="en-US">Deferred tax assets fixed assets.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxAssetLeaseLiability" xlink:to="ATCH_DeferredTaxAssetLeaseLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxAssetLeaseLiability_doc" xml:lang="en-US">Deferred tax asset lease liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfSecuredConvertibleNotePercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of secured convertible note percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent" xlink:to="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EffectiveIncomeTaxRateReconciliationChangeInFairValueOfAttheMarketAgreementPercent_doc" xml:lang="en-US">Effective income tax rate reconciliation change in fair value of at the market agreement percent.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" xlink:to="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag_doc" xml:lang="en-US">Fair value recurring basis unobservable input reconciliation liability gain loss statement of income extensible list not disclosed flag.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SubscriptionAgreementCurrent" xlink:to="ATCH_SubscriptionAgreementCurrent_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SubscriptionAgreementCurrent_doc" xml:lang="en-US">Subscription agreement current.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_BadDebtExpenseAndTradingErrorAdjustments" xlink:to="ATCH_BadDebtExpenseAndTradingErrorAdjustments_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_BadDebtExpenseAndTradingErrorAdjustments_doc" xml:lang="en-US">Bad debt expense and trading error adjustments.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfStockPayable" xlink:to="ATCH_FairValueAdjustmentOfStockPayable_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfStockPayable_doc" xml:lang="en-US">Fair value adjustment of stock payable.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesCommitmentFees" xlink:to="ATCH_StockIssuedDuringPeriodSharesCommitmentFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesCommitmentFees_doc" xml:lang="en-US">Stock issued during period shares commitment fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueCommitmentFees" xlink:to="ATCH_StockIssuedDuringPeriodValueCommitmentFees_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueCommitmentFees_doc" xml:lang="en-US">Stock issued during period value commitment fees.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal" xlink:to="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockTransferredDuringPeriodByRelatedPartyValueConversionOfConvertibleSecuritiesPrincipal_doc" xml:lang="en-US">Stock transferred during period by related party value conversion of convertible securities principal.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:to="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesCompanyObligationsNetOfContributedCapitalForDebtAssumed_doc" xml:lang="en-US">Stock issued during period shares company obligations net of contributed capital for debt assumed.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed" xlink:to="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueCompanyObligationsNetOfContributedCapitalForDebtAssumed_doc" xml:lang="en-US">Stock issued during period value company obligations net of contributed capital for debt assumed.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues" xlink:to="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSettlementOfDues_doc" xml:lang="en-US">Stock issued during period shares settlement of dues.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSettlementOfDues" xlink:to="ATCH_StockIssuedDuringPeriodValueSettlementOfDues_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueSettlementOfDues_doc" xml:lang="en-US">Stock issued during period value settlement of dues.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt" xlink:to="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesDelayedPaymentsOfDebt_doc" xml:lang="en-US">Stock issued during period shares delayed payments of debt.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt" xlink:to="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueDelayedPaymentsOfDebt_doc" xml:lang="en-US">Stock issued during period value delayed payments of debt.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueReverseStockSplits" xlink:to="ATCH_StockIssuedDuringPeriodValueReverseStockSplits_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueReverseStockSplits_doc" xml:lang="en-US">Stock issued during period value reverse stock splits.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodValueSecuritiesPurchaseAgreement_doc" xml:lang="en-US">Stock issued during period value securities purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement" xlink:to="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesSecuritiesPurchaseAgreement_doc" xml:lang="en-US">Stock issued during period shares securities purchase agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement" xlink:to="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodPartialPaymentInSettlementAgreement_doc" xml:lang="en-US">Stock issued during period partial payment in settlement agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement" xlink:to="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_StockIssuedDuringPeriodSharesPartialPaymentInSettlementAgreement_doc" xml:lang="en-US">Stock issued during period shares partial payment in settlement agreement.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesDerivativeMember" xlink:to="ATCH_ConvertibleNotesDerivativeMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNotesDerivativeMember_doc" xml:lang="en-US">Convertible Notes Derivative [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PostReverseSplit" xlink:to="ATCH_PostReverseSplit_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PostReverseSplit_doc" xml:lang="en-US">Post reverse split.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSellersConvertibleNotes" xlink:to="ATCH_FairValueAdjustmentOfSellersConvertibleNotes_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FairValueAdjustmentOfSellersConvertibleNotes_doc" xml:lang="en-US">Fair value adjustment of sellers convertible notes.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PreReverseSplit" xlink:to="ATCH_PreReverseSplit_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PreReverseSplit_doc" xml:lang="en-US">Pre reverse split.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PaidInKindLateFeesToSellers" xlink:to="ATCH_PaidInKindLateFeesToSellers_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PaidInKindLateFeesToSellers_doc" xml:lang="en-US">Paid in kind late fees to sellers.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ShortTermMergerFinancingMember" xlink:to="ATCH_ShortTermMergerFinancingMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ShortTermMergerFinancingMember_doc" xml:lang="en-US">Short Term Merger Financing [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_PromissoryNotesMember" xlink:to="ATCH_PromissoryNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_PromissoryNotesMember_doc" xml:lang="en-US">Promissory Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_EquitySecuritiesPurchaseAgreementMember" xlink:to="ATCH_EquitySecuritiesPurchaseAgreementMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_EquitySecuritiesPurchaseAgreementMember_doc" xml:lang="en-US">Equity Securities Purchase Agreement [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfSharesPerUnitIssued" xlink:to="ATCH_NumberOfSharesPerUnitIssued_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NumberOfSharesPerUnitIssued_doc" xml:lang="en-US">Number of common stock to be issued per each unit issued during the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NumberOfWarrantsPerUnitIssued" xlink:to="ATCH_NumberOfWarrantsPerUnitIssued_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NumberOfWarrantsPerUnitIssued_doc" xml:lang="en-US">Number of warrants to be issued per each unit issued during the period.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_TwoThousandTwentyFiveStockOptionsMember" xlink:to="ATCH_TwoThousandTwentyFiveStockOptionsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_TwoThousandTwentyFiveStockOptionsMember_doc" xml:lang="en-US">Two Thousand Twenty Five Stock Options [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_ConvertibleNotesMember" xlink:to="ATCH_ConvertibleNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_ConvertibleNotesMember_doc" xml:lang="en-US">Convertible Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashDepositNumberOfFinancialInstitutions" xlink:to="ATCH_CashDepositNumberOfFinancialInstitutions_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_CashDepositNumberOfFinancialInstitutions_doc" xml:lang="en-US">Number of financial institutions into which company has deposited cash at end of the year.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FiniteLivedIntangibleAssets" xlink:to="ATCH_FiniteLivedIntangibleAssets_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_FiniteLivedIntangibleAssets_doc" xml:lang="en-US">Finite lived intangible assets.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance" xlink:to="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_NetDeferredTaxAssetsLiabilityBeforeValuationAllowance_doc" xml:lang="en-US">Net deferred tax assets liability before valuation allowance.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SellersNotesMember" xlink:to="ATCH_SellersNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SellersNotesMember_doc" xml:lang="en-US">Sellers Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_SecuredConvertibleNotesMember" xlink:to="ATCH_SecuredConvertibleNotesMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_SecuredConvertibleNotesMember_doc" xml:lang="en-US">Secured Convertible Notes [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputRecoveryRateMember" xlink:to="ATCH_MeasurementInputRecoveryRateMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MeasurementInputRecoveryRateMember_doc" xml:lang="en-US">Measurement Input Recovery Rate [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputInterestBalanceMember" xlink:to="ATCH_MeasurementInputInterestBalanceMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MeasurementInputInterestBalanceMember_doc" xml:lang="en-US">Measurement Input Interest Balance [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember" xlink:to="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_MeasurementInputAnticipatedMonthlyAdvancePaymentsMember_doc" xml:lang="en-US">Measurement Input Anticipated Monthly Advance Payments [Member]</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DeferredTaxLiability" xlink:to="ATCH_DeferredTaxLiability_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ATCH_DeferredTaxLiability_doc" xml:lang="en-US">Deferred tax liability.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_2_lbl" xml:lang="en-US">Assets, Current</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_3_lbl" xml:lang="en-US">Assets</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_2_lbl" xml:lang="en-US">Liabilities, Current</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_2_lbl" xml:lang="en-US">Liabilities</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_4_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_4_lbl" xml:lang="en-US">Equity, Attributable to Parent</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_2_lbl" xml:lang="en-US">Liabilities and Equity</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_2_lbl" xml:lang="en-US">Revenues</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOperatingIncomeExpenseNet" xlink:to="us-gaap_OtherOperatingIncomeExpenseNet_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet_2_lbl" xml:lang="en-US">Other Operating Income (Expense), Net</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_2_lbl" xml:lang="en-US">Operating Expenses</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee" xlink:to="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnFairValueOfContingentGuarantee_3_lbl" xml:lang="en-US">DerivativeGainLossOnFairValueOfContingentGuarantee</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_DerivativeGainLossOnSecuredConvertibleNote" xlink:to="ATCH_DerivativeGainLossOnSecuredConvertibleNote_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_DerivativeGainLossOnSecuredConvertibleNote_3_lbl" xml:lang="en-US">DerivativeGainLossOnSecuredConvertibleNote</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement" xlink:to="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfWinstonStrawnAgreement_3_lbl" xml:lang="en-US">FairValueAdjustmentOfWinstonStrawnAgreement</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseNonoperating" xlink:to="us-gaap_InterestExpenseNonoperating_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseNonoperating_2_lbl" xml:lang="en-US">Interest Expense, Nonoperating</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_2_lbl" xml:lang="en-US">Nonoperating Income (Expense)</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2_lbl" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet" xlink:to="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet_3_lbl" xml:lang="en-US">FairValueOfDerivativeGainLossOnConvertibleNoteDerivativeNet</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfEarnoutLiability" xlink:to="ATCH_FairValueAdjustmentOfEarnoutLiability_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfEarnoutLiability_3_lbl" xml:lang="en-US">FairValueAdjustmentOfEarnoutLiability</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_FairValueAdjustmentOfSubscriptionAgreement" xlink:to="ATCH_FairValueAdjustmentOfSubscriptionAgreement_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_FairValueAdjustmentOfSubscriptionAgreement_3_lbl" xml:lang="en-US">FairValueAdjustmentOfSubscriptionAgreement</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_ForgoneRecoveryIndName_2_lbl" xml:lang="en-US">Forgone Recovery, Individual Name</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ecd_AwardsCloseToMnpiDiscIndName_2_lbl" xml:lang="en-US">Awards Close in Time to MNPI Disclosures, Individual Name</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_2_lbl" xml:lang="en-US">Equity [Text Block]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_2_lbl" xml:lang="en-US">Goodwill and Intangible Assets, Policy [Policy Text Block]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashReserveDepositLessThanAmountRequired_3_lbl" xml:lang="en-US">CashReserveDepositLessThanAmountRequired</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATCH_CashSegregatedCustomers" xlink:to="ATCH_CashSegregatedCustomers_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_CashSegregatedCustomers_3_lbl" xml:lang="en-US">CashSegregatedCustomers</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue" xlink:to="us-gaap_DepositsReceivedForSecuritiesLoanedAtCarryingValue_2_lbl" xlink:type="arc" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ATCH_AmortizationOfDebtDiscount_3_lbl" xml:lang="en-US">AmortizationOfDebtDiscount</link:label>
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