<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.5.1.0 -->
<!--Based on XBRL 2.1-->
<!--Created on: 11/12/2026 6:37:12 PM-->
<!--Modified on: 11/12/2026 6:37:12 PM-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#StatementCondensedConsolidatedBalanceSheets" roleURI="http://www.avat.com/role/StatementCondensedConsolidatedBalanceSheets" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#StatementCondensedConsolidatedStatementsOfOperations" roleURI="http://www.avat.com/role/StatementCondensedConsolidatedStatementsOfOperations" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#StatementCondensedConsolidatedStatementsOfCashFlows" roleURI="http://www.avat.com/role/StatementCondensedConsolidatedStatementsOfCashFlows" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#DisclosureReverseRecapitalizationTransactionProceedsDetails" roleURI="http://www.avat.com/role/DisclosureReverseRecapitalizationTransactionProceedsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#DisclosureReverseRecapitalizationTransactionsCostsDetails" roleURI="http://www.avat.com/role/DisclosureReverseRecapitalizationTransactionsCostsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#DisclosureFairValueMeasurementsDetails" roleURI="http://www.avat.com/role/DisclosureFairValueMeasurementsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#DisclosureStakingRevenueScheduleOfStakingRevenueNetOfFeesDetails" roleURI="http://www.avat.com/role/DisclosureStakingRevenueScheduleOfStakingRevenueNetOfFeesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="tmb-20260930.xsd#DisclosureDigitalAssetsClassificationsOfTokensAndFairValueDetails" roleURI="http://www.avat.com/role/DisclosureDigitalAssetsClassificationsOfTokensAndFairValueDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item" />
  <calculationLink xlink:role="http://www.avat.com/role/StatementCondensedConsolidatedBalanceSheets" xlink:type="extended" xlink:title="995200100 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS" xmlns="http://www.xbrl.org/2003/linkbase">
    <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" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsCurrent_639301054309938126" order="1" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="us-gaap_Cash_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_FinancialAssetCurrent" xlink:label="avat_FinancialAssetCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="avat_FinancialAssetCurrent_639301054309938126" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetFairValueCurrent" xlink:label="us-gaap_CryptoAssetFairValueCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="us-gaap_CryptoAssetFairValueCurrent_639301054309938126" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredCostsCurrent" xlink:label="us-gaap_DeferredCostsCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="us-gaap_DeferredCostsCurrent_639301054309938126" order="5" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639301054309938126" xlink:to="us-gaap_OtherReceivablesNetCurrent_639301054309938126" order="6" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetFairValueNoncurrent" xlink:label="us-gaap_CryptoAssetFairValueNoncurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_CryptoAssetFairValueNoncurrent_639301054309938126" order="2" use="optional" weight="1" />
    <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" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_Liabilities_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Liabilities_639301054309938126" xlink:to="us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_639301054309938126" order="1" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Liabilities_639301054309938126" xlink:to="us-gaap_LiabilitiesCurrent_639301054309938126" order="2" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639301054309938126" xlink:to="us-gaap_NotesPayableCurrent_639301054309938126" order="1" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639301054309938126" xlink:to="us-gaap_InterestPayableCurrent_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_TokenSaleLiabilityCurrent" xlink:label="avat_TokenSaleLiabilityCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639301054309938126" xlink:to="avat_TokenSaleLiabilityCurrent_639301054309938126" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_AccruedTransactionCostsCurrent" xlink:label="avat_AccruedTransactionCostsCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639301054309938126" xlink:to="avat_AccruedTransactionCostsCurrent_639301054309938126" order="4" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639301054309938126" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_639301054309938126" order="5" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_CommitmentsAndContingencies_639301054309938126" order="2" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity_639301054309938126" order="3" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_CommonStockValue_639301054309938126" order="1" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_PreferredStockValue_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonValue" xlink:label="us-gaap_TreasuryStockCommonValue_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_TreasuryStockCommonValue_639301054309938126" order="3" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_CommonStockShareSubscribedButUnissuedSubscriptionsReceivable_639301054309938126" order="4" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_639301054309938126" order="5" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639301054309938126" xlink:to="us-gaap_AdditionalPaidInCapital_639301054309938126" order="6" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/StatementCondensedConsolidatedStatementsOfOperations" xlink:type="extended" xlink:title="995200200 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS" xmlns="http://www.xbrl.org/2003/linkbase">
    <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" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit_639301054309938126" order="1" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_639301054309938126" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfTokenSaleLiability" xlink:label="avat_ChangeInFairValueOfTokenSaleLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="avat_ChangeInFairValueOfTokenSaleLiability_639301054309938126" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfPostIssuanceSharesLiability" xlink:label="avat_ChangeInFairValueOfPostIssuanceSharesLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="avat_ChangeInFairValueOfPostIssuanceSharesLiability_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_639301054309938126" order="3" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_GainLossOnSettlementOfTokenSaleLiability" xlink:label="avat_GainLossOnSettlementOfTokenSaleLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="avat_GainLossOnSettlementOfTokenSaleLiability_639301054309938126" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="us-gaap_OtherNonoperatingIncome_639301054309938126" order="5" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="us-gaap_InterestExpenseNonoperating_639301054309938126" order="6" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="us-gaap_InvestmentIncomeInterest_639301054309938126" order="7" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_InitialIssuanceOfContingentConsiderationLiabilityExpense" xlink:label="avat_InitialIssuanceOfContingentConsiderationLiabilityExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="avat_InitialIssuanceOfContingentConsiderationLiabilityExpense_639301054309938126" order="8" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense" xlink:label="avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_639301054309938126" xlink:to="avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense_639301054309938126" order="9" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_639301054309938126" xlink:to="us-gaap_OperatingIncomeLoss_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfCryptoAssets" xlink:label="avat_ChangeInFairValueOfCryptoAssets_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="avat_ChangeInFairValueOfCryptoAssets_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetRealizedLossOperating" xlink:label="us-gaap_CryptoAssetRealizedLossOperating_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="us-gaap_CryptoAssetRealizedLossOperating_639301054309938126" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_639301054309938126" order="3" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="us-gaap_GeneralAndAdministrativeExpense_639301054309938126" order="4" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="us-gaap_BusinessCombinationAcquisitionRelatedCosts_639301054309938126" order="5" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639301054309938126" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_639301054309938126" order="6" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/StatementCondensedConsolidatedStatementsOfCashFlows" xlink:type="extended" xlink:title="995200400 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_ProfitLoss_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetStakingIncome" xlink:label="avat_CryptoAssetStakingIncome_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_CryptoAssetStakingIncome_639301054309938126" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetLiquidStakingRewards" xlink:label="avat_CryptoAssetLiquidStakingRewards_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_CryptoAssetLiquidStakingRewards_639301054309938126" order="3" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_UsdCoinReceivedOtherIncome" xlink:label="avat_UsdCoinReceivedOtherIncome_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_UsdCoinReceivedOtherIncome_639301054309938126" order="4" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetDisposedOfThroughStakeFess" xlink:label="avat_CryptoAssetDisposedOfThroughStakeFess_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_CryptoAssetDisposedOfThroughStakeFess_639301054309938126" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfCryptoAssets" xlink:label="avat_ChangeInFairValueOfCryptoAssets_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_ChangeInFairValueOfCryptoAssets_639301054309938126" order="6" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfTokenSaleLiability" xlink:label="avat_ChangeInFairValueOfTokenSaleLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_ChangeInFairValueOfTokenSaleLiability_639301054309938126" order="7" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_GainLossOnSettlementOfTokenSaleLiability" xlink:label="avat_GainLossOnSettlementOfTokenSaleLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_GainLossOnSettlementOfTokenSaleLiability_639301054309938126" order="8" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_639301054309938126" order="9" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ChangeInFairValueOfPostIssuanceSharesLiability" xlink:label="avat_ChangeInFairValueOfPostIssuanceSharesLiability_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_ChangeInFairValueOfPostIssuanceSharesLiability_639301054309938126" order="10" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetRealizedLossOperating" xlink:label="us-gaap_CryptoAssetRealizedLossOperating_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_CryptoAssetRealizedLossOperating_639301054309938126" order="11" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_639301054309938126" order="12" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_639301054309938126" order="13" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_639301054309938126" order="14" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedParties" xlink:label="us-gaap_IncreaseDecreaseInDueFromRelatedParties_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_IncreaseDecreaseInDueFromRelatedParties_639301054309938126" order="15" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense" xlink:label="avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_InitialIssuanceOfPostShareIssuanceLiabilityExpense_639301054309938126" order="16" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_InitialIssuanceOfContingentConsiderationLiabilityExpense" xlink:label="avat_InitialIssuanceOfContingentConsiderationLiabilityExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="avat_InitialIssuanceOfContingentConsiderationLiabilityExpense_639301054309938126" order="17" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_ShareBasedCompensation_639301054309938126" order="18" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639301054309938126" xlink:to="us-gaap_IncreaseDecreaseInInterestPayableNet_639301054309938126" order="19" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ProceedsFromDisposalFinancialAsset" xlink:label="avat_ProceedsFromDisposalFinancialAsset_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639301054309938126" xlink:to="avat_ProceedsFromDisposalFinancialAsset_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_PaymentsToAcquireFinancialAsset" xlink:label="avat_PaymentsToAcquireFinancialAsset_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639301054309938126" xlink:to="avat_PaymentsToAcquireFinancialAsset_639301054309938126" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromDisposalCryptoAsset" xlink:label="us-gaap_ProceedsFromDisposalCryptoAsset_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639301054309938126" xlink:to="us-gaap_ProceedsFromDisposalCryptoAsset_639301054309938126" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentForAcquisitionCryptoAsset" xlink:label="us-gaap_PaymentForAcquisitionCryptoAsset_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639301054309938126" xlink:to="us-gaap_PaymentForAcquisitionCryptoAsset_639301054309938126" order="4" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_639301054309938126" order="3" use="optional" weight="1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639301054309938126" xlink:to="us-gaap_ProceedsFromNotesPayable_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_AmountOfSharesIssuedInConnectionWithBusinessCombinationFinancingActivities" xlink:label="avat_AmountOfSharesIssuedInConnectionWithBusinessCombinationFinancingActivities_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639301054309938126" xlink:to="avat_AmountOfSharesIssuedInConnectionWithBusinessCombinationFinancingActivities_639301054309938126" order="2" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639301054309938126" xlink:to="us-gaap_RepaymentsOfNotesPayable_639301054309938126" order="3" use="optional" weight="-1" />
    <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_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639301054309938126" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_639301054309938126" order="4" use="optional" weight="-1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/DisclosureReverseRecapitalizationTransactionProceedsDetails" xlink:type="extended" xlink:title="99940301 - Disclosure - Reverse Recapitalization - Transaction proceeds (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_ReverseRecapitalizationNet" xlink:label="avat_ReverseRecapitalizationNet_1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_NetProceedsFromBusinessCombination" xlink:label="avat_NetProceedsFromBusinessCombination_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_ReverseRecapitalizationNet_1" xlink:to="avat_NetProceedsFromBusinessCombination_639301054309938126" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationReverseRecapitalizationRecognizedAssetAcquiredCashHeldInTrustAndCashNetOfRedemptions" xlink:label="avat_BusinessCombinationReverseRecapitalizationRecognizedAssetAcquiredCashHeldInTrustAndCashNetOfRedemptions_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_NetProceedsFromBusinessCombination_639301054309938126" xlink:to="avat_BusinessCombinationReverseRecapitalizationRecognizedAssetAcquiredCashHeldInTrustAndCashNetOfRedemptions_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationReverseRecapitalizationTransactionCosts" xlink:label="avat_BusinessCombinationReverseRecapitalizationTransactionCosts_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_NetProceedsFromBusinessCombination_639301054309938126" xlink:to="avat_BusinessCombinationReverseRecapitalizationTransactionCosts_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_ReverseRecapitalizationNet_1" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_639301054309938126" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationRecognizedLiabilityAssumedAccruedExpensesCurrent" xlink:label="avat_BusinessCombinationRecognizedLiabilityAssumedAccruedExpensesCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_ReverseRecapitalizationNet_1" xlink:to="avat_BusinessCombinationRecognizedLiabilityAssumedAccruedExpensesCurrent_639301054309938126" order="3" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/DisclosureReverseRecapitalizationTransactionsCostsDetails" xlink:type="extended" xlink:title="99940304 - Disclosure - Reverse Recapitalization - Transactions costs (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationLegalFees" xlink:label="avat_BusinessCombinationLegalFees_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_BusinessCombinationAcquisitionRelatedCosts_1" xlink:to="avat_BusinessCombinationLegalFees_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationProfessionalFees" xlink:label="avat_BusinessCombinationProfessionalFees_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_BusinessCombinationAcquisitionRelatedCosts_1" xlink:to="avat_BusinessCombinationProfessionalFees_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_BusinessCombinationOtherExpense" xlink:label="avat_BusinessCombinationOtherExpense_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_BusinessCombinationAcquisitionRelatedCosts_1" xlink:to="avat_BusinessCombinationOtherExpense_639301054309938126" order="3" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/DisclosureFairValueMeasurementsDetails" xlink:type="extended" xlink:title="99940901 - Disclosure - Fair Value Measurements (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="us-gaap_AssetsFairValueDisclosure" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetFairValueNoncurrent" xlink:label="us-gaap_CryptoAssetFairValueNoncurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="us-gaap_CryptoAssetFairValueNoncurrent_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_FinancialAssetsFairValueDisclosure" xlink:label="avat_FinancialAssetsFairValueDisclosure_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure" xlink:to="avat_FinancialAssetsFairValueDisclosure_639301054309938126" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/DisclosureStakingRevenueScheduleOfStakingRevenueNetOfFeesDetails" xlink:type="extended" xlink:title="99941002 - Disclosure - Staking Revenue - Schedule of staking revenue, net of fees (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetStakingIncomeNetOfFees" xlink:label="avat_CryptoAssetStakingIncomeNetOfFees_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="avat_CryptoAssetStakingIncomeNetOfFees_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetStakingRewards" xlink:label="avat_CryptoAssetStakingRewards_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_CryptoAssetStakingIncomeNetOfFees_639301054309938126" xlink:to="avat_CryptoAssetStakingRewards_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetStakingFeesPaidToThirdParties" xlink:label="avat_CryptoAssetStakingFeesPaidToThirdParties_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="avat_CryptoAssetStakingIncomeNetOfFees_639301054309938126" xlink:to="avat_CryptoAssetStakingFeesPaidToThirdParties_639301054309938126" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetLiquidStakingRewards" xlink:label="avat_CryptoAssetLiquidStakingRewards_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="avat_CryptoAssetLiquidStakingRewards_639301054309938126" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.avat.com/role/DisclosureDigitalAssetsClassificationsOfTokensAndFairValueDetails" xlink:type="extended" xlink:title="99941102 - Disclosure - Digital Assets - Classifications of Tokens and Fair Value (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetFairValue" xlink:label="us-gaap_CryptoAssetFairValue" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentSubjectToContractualLockUpRestrictionsFairValue" xlink:label="avat_CryptoAssetNonCurrentSubjectToContractualLockUpRestrictionsFairValue_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetFairValue" xlink:to="avat_CryptoAssetNonCurrentSubjectToContractualLockUpRestrictionsFairValue_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentPledgedAsCollateralFairValue" xlink:label="avat_CryptoAssetNonCurrentPledgedAsCollateralFairValue_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetFairValue" xlink:to="avat_CryptoAssetNonCurrentPledgedAsCollateralFairValue_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentUnrestrictedFairValue" xlink:label="avat_CryptoAssetNonCurrentUnrestrictedFairValue_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetFairValue" xlink:to="avat_CryptoAssetNonCurrentUnrestrictedFairValue_639301054309938126" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetFairValueUnrestrictedCurrent" xlink:label="avat_CryptoAssetFairValueUnrestrictedCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetFairValue" xlink:to="avat_CryptoAssetFairValueUnrestrictedCurrent_639301054309938126" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetNumberOfUnits" xlink:label="us-gaap_CryptoAssetNumberOfUnits" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentTokensSubjectToContractualLockUpRestrictions" xlink:label="avat_CryptoAssetNonCurrentTokensSubjectToContractualLockUpRestrictions_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetNumberOfUnits" xlink:to="avat_CryptoAssetNonCurrentTokensSubjectToContractualLockUpRestrictions_639301054309938126" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentTokensPledgedAsCollateral" xlink:label="avat_CryptoAssetNonCurrentTokensPledgedAsCollateral_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetNumberOfUnits" xlink:to="avat_CryptoAssetNonCurrentTokensPledgedAsCollateral_639301054309938126" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNonCurrentUnrestrictedTokens" xlink:label="avat_CryptoAssetNonCurrentUnrestrictedTokens_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetNumberOfUnits" xlink:to="avat_CryptoAssetNonCurrentUnrestrictedTokens_639301054309938126" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="tmb-20260930.xsd#avat_CryptoAssetNumberOfUnitsUnrestrictedCurrent" xlink:label="avat_CryptoAssetNumberOfUnitsUnrestrictedCurrent_639301054309938126" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CryptoAssetNumberOfUnits" xlink:to="avat_CryptoAssetNumberOfUnitsUnrestrictedCurrent_639301054309938126" order="4" use="optional" weight="1" />
  </calculationLink>
</link:linkbase>
