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  <xs:element id="dfdv_OutstandingVotingPowerPercentage" abstract="false" name="OutstandingVotingPowerPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dfdv_MarketValueRiskMember" abstract="true" name="MarketValueRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_DigitalAssetTreasuryMember" abstract="true" name="DigitalAssetTreasuryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_RealEstatePlatformMember" abstract="true" name="RealEstatePlatformMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_ConvertibleNotesMember" abstract="true" name="ConvertibleNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_DividendWarrantMember" abstract="true" name="DividendWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_InterestOnConvertibleDebtIncrementalImpact" abstract="false" name="InterestOnConvertibleDebtIncrementalImpact" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_EarningsPerShareBasicAndDilutedEPSAbstract" abstract="true" name="EarningsPerShareBasicAndDilutedEPSAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_NumberOfReportableSegmentsNotDisclosedFlag" abstract="false" name="NumberOfReportableSegmentsNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_TreasuryMember" abstract="true" name="TreasuryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_RealEstateInvestmentTrustsMember" abstract="true" name="RealEstateInvestmentTrustsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_SolanaMember" abstract="true" name="SolanaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_CryptoAssetNotionalAmountReleaseRemainderOfFiscalYear" abstract="false" name="CryptoAssetNotionalAmountReleaseRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dfdv_CryptoAssetNotionalAmountReleaseYearOne" abstract="false" name="CryptoAssetNotionalAmountReleaseYearOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dfdv_CryptoAssetNotionalAmountReleaseYearTwo" abstract="false" name="CryptoAssetNotionalAmountReleaseYearTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dfdv_AdditionsFromConvertibleNotes" abstract="false" name="AdditionsFromConvertibleNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_AdditionsFromDigitalAssetTermLoans" abstract="false" name="AdditionsFromDigitalAssetTermLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_AdditionsFromCollateralizedFinancingArrangements" abstract="false" name="AdditionsFromCollateralizedFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetAdditionsFromTheSettlementOfDebtSecurities" abstract="false" name="CryptoAssetAdditionsFromTheSettlementOfDebtSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetAdditionsFromInterestIncomeOnCollateralizedFinancingArrangements" abstract="false" name="CryptoAssetAdditionsFromInterestIncomeOnCollateralizedFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetReturnOfCollateralOnDigitalAssetFinancingArrangements" abstract="false" name="CryptoAssetReturnOfCollateralOnDigitalAssetFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_AdditionsToCollateralOnDigitalAssetFinancingArrangements" abstract="false" name="AdditionsToCollateralOnDigitalAssetFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetDispositionsFromPurchaseOfDebtSecurities" abstract="false" name="CryptoAssetDispositionsFromPurchaseOfDebtSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetRepaymentsOfDigitalAssetTermLoans" abstract="false" name="CryptoAssetRepaymentsOfDigitalAssetTermLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetRepaymentsOfCollateralizedFinancingArrangements" abstract="false" name="CryptoAssetRepaymentsOfCollateralizedFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetDispositionsFromCollateralForDigitalAssetFinancingArrangements" abstract="false" name="CryptoAssetDispositionsFromCollateralForDigitalAssetFinancingArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetNetConversionActivityAndPaymentsForExpenses" abstract="false" name="CryptoAssetNetConversionActivityAndPaymentsForExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetsGross" abstract="false" name="CryptoAssetsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetsAccumulatedImpairments" abstract="false" name="CryptoAssetsAccumulatedImpairments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetsNet" abstract="false" name="CryptoAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_IntangibleAssetTable" abstract="true" name="IntangibleAssetTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_ValidatorMember" abstract="true" name="ValidatorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_IntangibleAssetLineItems" abstract="true" name="IntangibleAssetLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_FiniteLivedIntangibleAssetsDisposals" abstract="false" name="FiniteLivedIntangibleAssetsDisposals" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_InfiniteLivedIntangibleAssetsGross" abstract="false" name="InfiniteLivedIntangibleAssetsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_InfiniteLivedIntangibleAssetsAccumulatedAmortization" abstract="false" name="InfiniteLivedIntangibleAssetsAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_IndefiniteLivedIntangibleAssetsDisposals" abstract="false" name="IndefiniteLivedIntangibleAssetsDisposals" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_IntangibleAssetsAccumulatedAmortization" abstract="false" name="IntangibleAssetsAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_IntangibleAssetDisposals" abstract="false" name="IntangibleAssetDisposals" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_FiniteLivedIntangibleAssetsAmortizationExpenseYearThreeAndThereafter" abstract="false" name="FiniteLivedIntangibleAssetsAmortizationExpenseYearThreeAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_AprilTwoThousandThirtyConvertibleNotesMember" abstract="true" name="AprilTwoThousandThirtyConvertibleNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_JulyTwoThousandThirtyConvertibleNotesMember" abstract="true" name="JulyTwoThousandThirtyConvertibleNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_BorrowingForDirectorAndOfficerInsurancePolicy" abstract="false" name="BorrowingForDirectorAndOfficerInsurancePolicy" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_InsurancePremiumsPayableTerm" abstract="false" name="InsurancePremiumsPayableTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_PaymentForInsurancePolicy" abstract="false" name="PaymentForInsurancePolicy" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_DigitalAssetsPledgedAsCollateralMember" abstract="true" name="DigitalAssetsPledgedAsCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_DigitalAssetFinancingArrangementsMember" abstract="true" name="DigitalAssetFinancingArrangementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_AccountsPayableAndAccruedExpensesMember" abstract="true" name="AccountsPayableAndAccruedExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_DigitalAssetsOtherMember" abstract="true" name="DigitalAssetsOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_MasterLoanAgreementMember" abstract="true" name="MasterLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_CollateralizedFinancingArrangementsMember" abstract="true" name="CollateralizedFinancingArrangementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_DebtInstrumentRenewalTerm" abstract="false" name="DebtInstrumentRenewalTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_ProceedsFromCollateralizedBorrowings" abstract="false" name="ProceedsFromCollateralizedBorrowings" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_RepaymentOfCollateralizedBorrowings" abstract="false" name="RepaymentOfCollateralizedBorrowings" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_SolanaSOLMember" abstract="true" name="SolanaSOLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_PayPalUSDMember" abstract="true" name="PayPalUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_PublicStockOfferingMember" abstract="true" name="PublicStockOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_AtTheMarketOfferingMember" abstract="true" name="AtTheMarketOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_SaleOfStockPurchaseOptionTerm" abstract="false" name="SaleOfStockPurchaseOptionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_SaleOfStockMaximumAuthorizedShares" abstract="false" name="SaleOfStockMaximumAuthorizedShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_TemporaryEquityDividendRatePerDollarAmount" abstract="false" name="TemporaryEquityDividendRatePerDollarAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="dfdv_TemporaryEquityDividendRatePercentage" abstract="false" name="TemporaryEquityDividendRatePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dfdv_TemporaryEquityDividendReserve" abstract="false" name="TemporaryEquityDividendReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_TemporaryEquityRedemptionPricePerShareUponFundamentalChange" abstract="false" name="TemporaryEquityRedemptionPricePerShareUponFundamentalChange" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="dfdv_TemporaryEquityFundamentalChangeRedemptionRepurchasePeriod" abstract="false" name="TemporaryEquityFundamentalChangeRedemptionRepurchasePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_TemporaryEquityStockIssuedDuringPeriodValueNewIssuesGross" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodValueNewIssuesGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_TemporaryEquityStockIssuedDuringPeriodValueAdditionalIssues" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodValueAdditionalIssues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_TemporaryEquityUnderwritingDiscountsAndCommissions" abstract="false" name="TemporaryEquityUnderwritingDiscountsAndCommissions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_TemporaryEquityOtherOfferingCosts" abstract="false" name="TemporaryEquityOtherOfferingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_TemporaryEquityAllocationOfFairValueToBifurcatedFundamentalChangePutOption" abstract="false" name="TemporaryEquityAllocationOfFairValueToBifurcatedFundamentalChangePutOption" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_OneSeriesDetachableStockWarrantMember" abstract="true" name="OneSeriesDetachableStockWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_TwoSeriesOfDetachableStockWarrantMember" abstract="true" name="TwoSeriesOfDetachableStockWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_SecuritiesPurchaseAgreementMember" abstract="true" name="SecuritiesPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_WarrantDividendMember" abstract="true" name="WarrantDividendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_PreFundedWarrantsMember" abstract="true" name="PreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_InvestmentAndOtherNonoperatingIncomeExpenseMember" abstract="true" name="InvestmentAndOtherNonoperatingIncomeExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_ClassOfWarrantOrRightNumberOfWarrantSeriesIssued" abstract="false" name="ClassOfWarrantOrRightNumberOfWarrantSeriesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dfdv_WarrantDividendFairValue" abstract="false" name="WarrantDividendFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_NumberOfPurchaseCommonStock" abstract="false" name="NumberOfPurchaseCommonStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_StockIssuedDuringPeriodValueWarrantsExercised" abstract="false" name="StockIssuedDuringPeriodValueWarrantsExercised" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_ClassOfWarrantOrRightExercisablePeriod" abstract="false" name="ClassOfWarrantOrRightExercisablePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_NumberOfWarrantsExercised" abstract="false" name="NumberOfWarrantsExercised" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_LineOfCreditFacilityCommitmentFeePeriod" abstract="false" name="LineOfCreditFacilityCommitmentFeePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_SharesIssuedForCommitmentFee" abstract="false" name="SharesIssuedForCommitmentFee" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_EquityLineOfCreditMember" abstract="true" name="EquityLineOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_JanoverProDispositionMember" abstract="true" name="JanoverProDispositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_CashWarrantsMember" abstract="true" name="CashWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_SubscriptionAgreementMember" abstract="true" name="SubscriptionAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_CykelAIMember" abstract="true" name="CykelAIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_HBVSpecialOpportunitiesInvestmentHolding1LimitedMember" abstract="true" name="HBVSpecialOpportunitiesInvestmentHolding1LimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_HBVSpecialOpportunitiesLimitedPartnershipFundMember" abstract="true" name="HBVSpecialOpportunitiesLimitedPartnershipFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_ConvertibleNoteMember" abstract="true" name="ConvertibleNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_MarketableSecuritiesStockPurchaseObligation" abstract="false" name="MarketableSecuritiesStockPurchaseObligation" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_NumberOfPrepaidWarrantsPurchased" abstract="false" name="NumberOfPrepaidWarrantsPurchased" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_PercentageOfPremiumExercisePriceOfWarrants" abstract="false" name="PercentageOfPremiumExercisePriceOfWarrants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dfdv_EquityMethodInvestmentHoldingsSoldPercentage" abstract="false" name="EquityMethodInvestmentHoldingsSoldPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dfdv_EquityMethodInvestmentSharesPurchased" abstract="false" name="EquityMethodInvestmentSharesPurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dfdv_ConvertibleNotesReceivableInEquivalentCryptoCurrency" abstract="false" name="ConvertibleNotesReceivableInEquivalentCryptoCurrency" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dfdv_EquityPaymentForDebtExtinguishmentOrDebtPrepaymentCost" abstract="false" name="EquityPaymentForDebtExtinguishmentOrDebtPrepaymentCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_DebtSecuritiesCurrentReceivedInPeriod" abstract="false" name="DebtSecuritiesCurrentReceivedInPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_SettlementOfNoteReceivableConsiderationReceived" abstract="false" name="SettlementOfNoteReceivableConsiderationReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesSubjecttoFairValueMeasurementsDetailsTable" abstract="true" name="FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesSubjecttoFairValueMeasurementsDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesSubjecttoFairValueMeasurementsDetailsLineItems" abstract="true" name="FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesSubjecttoFairValueMeasurementsDetailsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_CryptoAssetPledgedAsCollateralFairValue" abstract="false" name="CryptoAssetPledgedAsCollateralFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_DigitalAssetsStableCoinsFairValueDisclosure" abstract="false" name="DigitalAssetsStableCoinsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_DebtSecuritiesFairValueDisclosure" abstract="false" name="DebtSecuritiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_MarketableSecuritiesFairValueDisclosure" abstract="false" name="MarketableSecuritiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_CryptoAssetFinancingArrangementFairValueDisclosure" abstract="false" name="CryptoAssetFinancingArrangementFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_WarrantDividendSeries1Member" abstract="true" name="WarrantDividendSeries1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_WarrantDividendSeries2Member" abstract="true" name="WarrantDividendSeries2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_MeasurementInputStrikePriceSeries1Member" abstract="true" name="MeasurementInputStrikePriceSeries1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_MeasurementInputStrikePriceSeries2Member" abstract="true" name="MeasurementInputStrikePriceSeries2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_MeasurementInputDividendMember" abstract="true" name="MeasurementInputDividendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_CommitmentsandContingenciesDetailsTable" abstract="true" name="CommitmentsandContingenciesDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dfdv_PromissoryNoteAgreementMember" abstract="true" name="PromissoryNoteAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_UnnamedEquityMethodInvestmentMember" abstract="true" name="UnnamedEquityMethodInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_LineOfCreditFacilityPeriodicPaymentInterestPeriod" abstract="false" name="LineOfCreditFacilityPeriodicPaymentInterestPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dfdv_SOLMember" abstract="true" name="SOLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dfdv_NumberOfTokensDelegatedToCustomers" abstract="false" name="NumberOfTokensDelegatedToCustomers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dfdv_TokensDelegatedAmountToValidators" abstract="false" name="TokensDelegatedAmountToValidators" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dfdv_Mr.JanoverMember" abstract="true" name="Mr.JanoverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
