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  <xsd:element name="PublicWarrantsMember" id="hsdt_PublicWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleOfStockCombinedOfferingPricePerShare" id="hsdt_SaleOfStockCombinedOfferingPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="SaleOfStockPreFundedWarrantsAndAccompanyingPublicWarrantsPricePerShare" id="hsdt_SaleOfStockPreFundedWarrantsAndAccompanyingPublicWarrantsPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockWarrantsMember" id="hsdt_CommonStockWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IncomeTaxReconciliationChangeInDerivativeLiability" id="hsdt_IncomeTaxReconciliationChangeInDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesTable" id="hsdt_IncomeTaxesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesLineItems" id="hsdt_IncomeTaxesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaximumAggregateOfferingAmount" id="hsdt_MaximumAggregateOfferingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" id="hsdt_ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AccruedAndOtherCurrentLiabilities." id="hsdt_AccruedAndOtherCurrentLiabilities." type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ScheduleOfAccruedAndOtherCurrentLiabilitiesTableTextBlock" id="hsdt_ScheduleOfAccruedAndOtherCurrentLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DefinedContributionPlanFirstEmployerMatchingContributionPercentOfEmployeesGrossPay" id="hsdt_DefinedContributionPlanFirstEmployerMatchingContributionPercentOfEmployeesGrossPay" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DefinedContributionPlanNextEmployerMatchingContributionPercentOfEmployeesGrossPay" id="hsdt_DefinedContributionPlanNextEmployerMatchingContributionPercentOfEmployeesGrossPay" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ExpirationPeriodAxis" id="hsdt_ExpirationPeriodAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExpirationPeriodDomain" id="hsdt_ExpirationPeriodDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IndefiniteOneMember" id="hsdt_IndefiniteOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaximumCommissionRateAsPercentageOfGrossProceeds" id="hsdt_MaximumCommissionRateAsPercentageOfGrossProceeds" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TwoCustomersMember" id="hsdt_TwoCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfCustomers" id="hsdt_NumberOfCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ThreeCustomersMember" id="hsdt_ThreeCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfBasisOfPresentationTable" id="hsdt_ScheduleOfBasisOfPresentationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BasisOfPresentationLineItems" id="hsdt_BasisOfPresentationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DerivativeWarrantLiabilityReclassifiedToEquityOnExerciseOfWarrants" id="hsdt_DerivativeWarrantLiabilityReclassifiedToEquityOnExerciseOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DeferredOfferingCostsReclassifiedToEquityUponPublicOffering" id="hsdt_DeferredOfferingCostsReclassifiedToEquityUponPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SeriesWarrantsMember" id="hsdt_SeriesWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeriesBWarrantsMember" id="hsdt_SeriesBWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Warrants2022Member" id="hsdt_Warrants2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ForeignCurrencyTransactionIncludingOtherGainLossBeforeTax" id="hsdt_ForeignCurrencyTransactionIncludingOtherGainLossBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DerivativeGainLossOnDerivativeNetCashFlowImpact" id="hsdt_DerivativeGainLossOnDerivativeNetCashFlowImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ExistingWarrantsMember" id="hsdt_ExistingWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InducementWarrantsMember" id="hsdt_InducementWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromWarrantExercisesNetOfExpenses" id="hsdt_ProceedsFromWarrantExercisesNetOfExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FourCustomersMember" id="hsdt_FourCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StockIssuedDuringPeriodSharesWarrantsExercised" id="hsdt_StockIssuedDuringPeriodSharesWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="StockIssuedStockIssuanceCosts" id="hsdt_StockIssuedStockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PromissoryNotesApril2025Member" id="hsdt_PromissoryNotesApril2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrivatePlacement2025Member" id="hsdt_PrivatePlacement2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaximGroupLlcMember" id="hsdt_MaximGroupLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PlacementAgentFeesPercentageOfGrossProceedsOfOffering" id="hsdt_PlacementAgentFeesPercentageOfGrossProceedsOfOffering" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PlacementAgentMaximumReimbursementOfLegalFees" id="hsdt_PlacementAgentMaximumReimbursementOfLegalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PromissoryNotesOriginalIssueDiscount" id="hsdt_PromissoryNotesOriginalIssueDiscount" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="OtherLegalAndRegulatoryExpenses" id="hsdt_OtherLegalAndRegulatoryExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PlacementAgentWarrantsMember" id="hsdt_PlacementAgentWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PreFundedWarrants2025Member" id="hsdt_PreFundedWarrants2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PublicOffering2024Member" id="hsdt_PublicOffering2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PublicOffering2025Member" id="hsdt_PublicOffering2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ClassOfWarrantOrRightIssuePriceOfWarrantsOrRights" id="hsdt_ClassOfWarrantOrRightIssuePriceOfWarrantsOrRights" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ShareMultiplierOnWarrantExercise" id="hsdt_ShareMultiplierOnWarrantExercise" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="FirstResetDateMember" id="hsdt_FirstResetDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SecondResetDateMember" id="hsdt_SecondResetDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IncreaseInSharesAvailableForIssuance" id="hsdt_IncreaseInSharesAvailableForIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AmortizationOfDebtDiscountAndImputedInterestExpense" id="hsdt_AmortizationOfDebtDiscountAndImputedInterestExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OfferingCostsAllocatedToDerivativeLiability" id="hsdt_OfferingCostsAllocatedToDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="WarrantsIssuedJune62025Member" id="hsdt_WarrantsIssuedJune62025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune92025Member" id="hsdt_WarrantsIssuedJune92025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune112025PreResetMember" id="hsdt_WarrantsIssuedJune112025PreResetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune112025PostResetMember" id="hsdt_WarrantsIssuedJune112025PostResetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune122025Member" id="hsdt_WarrantsIssuedJune122025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune132025Member" id="hsdt_WarrantsIssuedJune132025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune162025PreResetMember" id="hsdt_WarrantsIssuedJune162025PreResetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune162025PostResetMember" id="hsdt_WarrantsIssuedJune162025PostResetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune172025Member" id="hsdt_WarrantsIssuedJune172025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune182025Member" id="hsdt_WarrantsIssuedJune182025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsIssuedJune202025Member" id="hsdt_WarrantsIssuedJune202025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FinancialAdvisoryFees" id="hsdt_FinancialAdvisoryFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StakingRewardsIncome" id="hsdt_StakingRewardsIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="September2025PrivatePlacementCashOfferingMember" id="hsdt_September2025PrivatePlacementCashOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ClassOfWarrantOrRightExercisePriceDiscountFromSharePrice" id="hsdt_ClassOfWarrantOrRightExercisePriceDiscountFromSharePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="StapledWarrants2025Member" id="hsdt_StapledWarrants2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="September2025PrivatePlacementCryptocurrencyOfferingMember" id="hsdt_September2025PrivatePlacementCryptocurrencyOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ClearStreetLlcMember" id="hsdt_ClearStreetLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="September2025AdvisorWarrantsMember" id="hsdt_September2025AdvisorWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PanteraBaseAdvisorWarrantsMember" id="hsdt_PanteraBaseAdvisorWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SummerBaseAdvisorWarrantsMember" id="hsdt_SummerBaseAdvisorWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PercentageOfAdditionalWarrantsGrantedBasedOnSharesIssuedUponExercise" id="hsdt_PercentageOfAdditionalWarrantsGrantedBasedOnSharesIssuedUponExercise" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AtMarketOffering2025Member" id="hsdt_AtMarketOffering2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AtMarketOffering2023Member" id="hsdt_AtMarketOffering2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetAbstract" id="hsdt_CryptoAssetAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetsReceivedInKindFromPrivatePlacement" id="hsdt_CryptoAssetsReceivedInKindFromPrivatePlacement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="Pipe2025OfferingsMember" id="hsdt_Pipe2025OfferingsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PlacementAgentCompensationAmount" id="hsdt_PlacementAgentCompensationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ProceedsOfDigitalAssetsFromIssuanceOrSaleOfEquity" id="hsdt_ProceedsOfDigitalAssetsFromIssuanceOrSaleOfEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AdvisorLockUpPeriod" id="hsdt_AdvisorLockUpPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantsOrRightExpirationPeriod" id="hsdt_ClassOfWarrantsOrRightExpirationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="WorkingCapital" id="hsdt_WorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BaseAdvisorWarrantsMember" id="hsdt_BaseAdvisorWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherEquityWarrantsMember" id="hsdt_OtherEquityWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ClassOfWarrantOrRightIssued" id="hsdt_ClassOfWarrantOrRightIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="Pipe2025OfferingsStrategicAdvisoryAgreementMember" id="hsdt_Pipe2025OfferingsStrategicAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Pipe2025OfferingsTradingAdvisoryAgreementMember" id="hsdt_Pipe2025OfferingsTradingAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TermOfAgreement" id="hsdt_TermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SummerWisdomHoldingsLimitedMember" id="hsdt_SummerWisdomHoldingsLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PanteraCapitalManagementLpMember" id="hsdt_PanteraCapitalManagementLpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NonCashFinancingCosts" id="hsdt_NonCashFinancingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SharesIssuedDuringPeriodValueSharesAndWarrants" id="hsdt_SharesIssuedDuringPeriodValueSharesAndWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SharesIssuedDuringPeriodSharesSharesAndWarrants" id="hsdt_SharesIssuedDuringPeriodSharesSharesAndWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CryptoAssetFairValuePerUnit" id="hsdt_CryptoAssetFairValuePerUnit" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CryptoAssetsReceivedInKindUsdc" id="hsdt_CryptoAssetsReceivedInKindUsdc" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CryptoAssetsReceivedInKindUsdt" id="hsdt_CryptoAssetsReceivedInKindUsdt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MeasurementInputSoftCallThresholdMember" id="hsdt_MeasurementInputSoftCallThresholdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetFairValueDeclinePercentage" id="hsdt_CryptoAssetFairValueDeclinePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RenewalTermOfAgreement" id="hsdt_RenewalTermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AssetsManagedBetween1BillionTo5BillionMember" id="hsdt_AssetsManagedBetween1BillionTo5BillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ThresholdInvestmentForCalculatingAssetManagementFee" id="hsdt_ThresholdInvestmentForCalculatingAssetManagementFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AssetsManagedMoreThan5BillionMember" id="hsdt_AssetsManagedMoreThan5BillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetsManagedLessThan1BillionMember" id="hsdt_AssetsManagedLessThan1BillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PurchaseOfDigitalAssetsWithStablecoins" id="hsdt_PurchaseOfDigitalAssetsWithStablecoins" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CryptoAssetNumberOfUnrestrictedUnitsStaked" id="hsdt_CryptoAssetNumberOfUnrestrictedUnitsStaked" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CryptoAssetRestrictedUnitsStaked" id="hsdt_CryptoAssetRestrictedUnitsStaked" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CryptoAssetNumberOfUnitsStaked" id="hsdt_CryptoAssetNumberOfUnitsStaked" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="MasterLoanAgreementMember" id="hsdt_MasterLoanAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentMinimumCollateralRatio" id="hsdt_DebtInstrumentMinimumCollateralRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="GeographicInformationDisclosureTextBlock" id="hsdt_GeographicInformationDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CryptoAssetUnlockMonthAxis" id="hsdt_CryptoAssetUnlockMonthAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetUnlockMonthDomain" id="hsdt_CryptoAssetUnlockMonthDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LockedSolMember" id="hsdt_LockedSolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FundLockedSolMember" id="hsdt_FundLockedSolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetUnbondingPeriod" id="hsdt_CryptoAssetUnbondingPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SolMember" id="hsdt_SolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetTransfer" id="hsdt_CryptoAssetTransfer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ScheduleOfCryptoAssetsSubjectToLockUpSchedulesTableTextBlock" id="hsdt_ScheduleOfCryptoAssetsSubjectToLockUpSchedulesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TradeFinanceAgreementMember" id="hsdt_TradeFinanceAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DigitalIntangibleAssetsAndDigitalAssetsReceivableUnrealizedGainLossOperating" id="hsdt_DigitalIntangibleAssetsAndDigitalAssetsReceivableUnrealizedGainLossOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DigitalIntangibleAssetsRealizedGainLossOperating" id="hsdt_DigitalIntangibleAssetsRealizedGainLossOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DigitalAssetsFundInvestmentUnrealizedGainLossOperating" id="hsdt_DigitalAssetsFundInvestmentUnrealizedGainLossOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DigitalAssetDerivativesRealizedGainLossOperating" id="hsdt_DigitalAssetDerivativesRealizedGainLossOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ScheduleOfCashAndCashEquivalentsAndWorkingCapitalTableTextBlock" id="hsdt_ScheduleOfCashAndCashEquivalentsAndWorkingCapitalTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NetChangeInFairValueOfDigitalIntangibleAssetsAndDigitalAssetsReceivableOperating" id="hsdt_NetChangeInFairValueOfDigitalIntangibleAssetsAndDigitalAssetsReceivableOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="NetChangeInFairValueOfDigitalAssetsFundInvestmentOperating" id="hsdt_NetChangeInFairValueOfDigitalAssetsFundInvestmentOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DerivativeWarrantLiabilityReclassifiedToEquityOnWarrantAmendment" id="hsdt_DerivativeWarrantLiabilityReclassifiedToEquityOnWarrantAmendment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EmployeeRetentionCreditReceivableCurrent" id="hsdt_EmployeeRetentionCreditReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ReclassificationOfWarrantLiabilities" id="hsdt_ReclassificationOfWarrantLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ClassOfWarrantsOrRightsExercisedButSharesNotYetIssued" id="hsdt_ClassOfWarrantsOrRightsExercisedButSharesNotYetIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedButNotSettledInPeriod" id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedButNotSettledInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PassThroughExpenses" id="hsdt_PassThroughExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareRepurchaseWeightedAveragePricePerShare" id="hsdt_ShareRepurchaseWeightedAveragePricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsNonCurrent" id="hsdt_ReceivableForDigitalAssetsNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="InvestmentInDigitalAssetsFundNonCurrent" id="hsdt_InvestmentInDigitalAssetsFundNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PaymentForPurchaseOfDigitalAssetsReceivable" id="hsdt_PaymentForPurchaseOfDigitalAssetsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PaymentForInvestmentInDigitalAssetsFund" id="hsdt_PaymentForInvestmentInDigitalAssetsFund" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FaitCurrencyHeldAsCashEquivalents" id="hsdt_FaitCurrencyHeldAsCashEquivalents" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="UsdStableCoinCashEquivalents" id="hsdt_UsdStableCoinCashEquivalents" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsFundInvestmentPolicyPolicyTextBlock" id="hsdt_DigitalAssetsFundInvestmentPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsAllowanceForCreditLosses" id="hsdt_ReceivableForDigitalAssetsAllowanceForCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ErrorInFairValueMeasurementRestrictedSolMember" id="hsdt_ErrorInFairValueMeasurementRestrictedSolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DigitalIntangibleAssetsAndDigitalAssetsReceivableReceivedInKindFromPrivatePlacement" id="hsdt_DigitalIntangibleAssetsAndDigitalAssetsReceivableReceivedInKindFromPrivatePlacement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsNumberOfCustodians" id="hsdt_DigitalAssetsNumberOfCustodians" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="SellingGeneralAndAdministrativeExpensesAndResearchAndDevelopmentExpensesPolicyTextBlock" id="hsdt_SellingGeneralAndAdministrativeExpensesAndResearchAndDevelopmentExpensesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ProductSalesAndOtherMember" id="hsdt_ProductSalesAndOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherPrivatePlacementMember" id="hsdt_OtherPrivatePlacementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalDerivativeLiabilityReclassifiedToEquity" id="hsdt_AdjustmentsToAdditionalPaidInCapitalDerivativeLiabilityReclassifiedToEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LockedPipeSolMember" id="hsdt_LockedPipeSolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Year2032To2045Member" id="hsdt_Year2032To2045Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsPercentAbstract" id="hsdt_EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsPercentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EffectiveIncomeTaxReconciliationChangeInFairValueOfDerivativeLiabilityPercent" id="hsdt_EffectiveIncomeTaxReconciliationChangeInFairValueOfDerivativeLiabilityPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEquityFinancingCostsPercent" id="hsdt_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEquityFinancingCostsPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsOtherPercent" id="hsdt_EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsOtherPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationUnrealizableFederalNetOperatingLosses" id="hsdt_EffectiveIncomeTaxRateReconciliationUnrealizableFederalNetOperatingLosses" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductibleItemsAmountAbstract" id="hsdt_EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductibleItemsAmountAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EffectiveIncomeTaxReconciliationChangeInFairValueOfDerivativeLiabilityAmount" id="hsdt_EffectiveIncomeTaxReconciliationChangeInFairValueOfDerivativeLiabilityAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEquityFinancingCostAmount" id="hsdt_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseEquityFinancingCostAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsOtherAmount" id="hsdt_EffectiveIncomeTaxRateReconciliationNonTaxableAndNondeductibleItemsOtherAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationUnrealizableFederalNetOperatingLossesAmount" id="hsdt_EffectiveIncomeTaxRateReconciliationUnrealizableFederalNetOperatingLossesAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LockedPipeSolDigitalAssetsNoncurrent" id="hsdt_LockedPipeSolDigitalAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsPolicyTextBlock" id="hsdt_DigitalAssetsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SaleOfStockCommissionsPaid" id="hsdt_SaleOfStockCommissionsPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SolanaHoldingsPercentageOfTotalSupply" id="hsdt_SolanaHoldingsPercentageOfTotalSupply" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mCompensationPercent" id="hsdt_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mCompensationPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162MCompensationAmount" id="hsdt_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162MCompensationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OperatingLossCarryforwardsPreTaxCutsAndJobsAct" id="hsdt_OperatingLossCarryforwardsPreTaxCutsAndJobsAct" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OperatingLossCarryforwardsSection382AnnualLimitation" id="hsdt_OperatingLossCarryforwardsSection382AnnualLimitation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StockIssuedDuringPeriodSharesCashlessExerciseOfWarrants" id="hsdt_StockIssuedDuringPeriodSharesCashlessExerciseOfWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CryptoAssetUnlockYearAxis" id="hsdt_CryptoAssetUnlockYearAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CryptoAssetUnlockYearDomain" id="hsdt_CryptoAssetUnlockYearDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DigitalAssetsReceivablePolicyPolicyTextBlock" id="hsdt_DigitalAssetsReceivablePolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockAndPrefundedWarrants" id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockAndPrefundedWarrants" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="JosephCheeMember" id="hsdt_JosephCheeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockUnderStapledWarrants" id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockUnderStapledWarrants" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardThresholdBusinessDaysForIssueOfEquityAwards" id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardThresholdBusinessDaysForIssueOfEquityAwards" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CashStapledWarrantRestrictedStockUnitsRsusMember" id="hsdt_CashStapledWarrantRestrictedStockUnitsRsusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockUnderCashStapledWarrants" id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalNumberOfCommonStockUnderCashStapledWarrants" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsReceivableAbstract" id="hsdt_DigitalAssetsReceivableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DigitalAssetsReceivableTextBlock" id="hsdt_DigitalAssetsReceivableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundInvestmentAbstract" id="hsdt_DigitalAssetsFundInvestmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DigitalAssetsFundInvestmentTextBlock" id="hsdt_DigitalAssetsFundInvestmentTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDigitalAssetsReceivableSubjectToLockUpSchedulesTableTextBlock" id="hsdt_ScheduleOfDigitalAssetsReceivableSubjectToLockUpSchedulesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDigitalAssetsReceivableActivityTableTextBlock" id="hsdt_ScheduleOfDigitalAssetsReceivableActivityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDigitalAssetsFundInvestmentSubjectToLockUpSchedulesTableTextBlock" id="hsdt_ScheduleOfDigitalAssetsFundInvestmentSubjectToLockUpSchedulesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDigitalAssetsFundInvestmentHoldingTableTextBlock" id="hsdt_ScheduleOfDigitalAssetsFundInvestmentHoldingTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDigitalAssetsFundInvestmentActivityTableTextBlock" id="hsdt_ScheduleOfDigitalAssetsFundInvestmentActivityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear1" id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear1" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear2" id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear2" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear3" id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear3" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsNumberOfRestrictedUnits" id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ReceivableForDigitalAssetsPurchase" id="hsdt_ReceivableForDigitalAssetsPurchase" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ReceivableForDigitalAssetsStakingRewards" id="hsdt_ReceivableForDigitalAssetsStakingRewards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ReceivableForDigitalAssetsUnrestrictedUnitsDistributed" id="hsdt_ReceivableForDigitalAssetsUnrestrictedUnitsDistributed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ReceivableForDigitalAssetsNetChangeInFairValueOperating" id="hsdt_ReceivableForDigitalAssetsNetChangeInFairValueOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PercentageOfOwnershipInDigitalAssetsFund" id="hsdt_PercentageOfOwnershipInDigitalAssetsFund" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear1" id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear1" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear2" id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear2" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear3" id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear3" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundNumberOfRestrictedUnits" id="hsdt_DigitalAssetsFundNumberOfRestrictedUnits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DigitalAssetsFundCostRestricted" id="hsdt_DigitalAssetsFundCostRestricted" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsFundFairValueRestricted" id="hsdt_DigitalAssetsFundFairValueRestricted" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsFundPurchase" id="hsdt_DigitalAssetsFundPurchase" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DigitalAssetsFundUnrestrictedUnitsDistributed" id="hsdt_DigitalAssetsFundUnrestrictedUnitsDistributed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear1" id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear1" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear2" id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear2" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear3" id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear3" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="OperatingLossCarryforwardsWrittenOff" id="hsdt_OperatingLossCarryforwardsWrittenOff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StakingRewardsFairValueImpact" id="hsdt_StakingRewardsFairValueImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CryptoAssetFairValueUnrestrictedCurrent" id="hsdt_CryptoAssetFairValueUnrestrictedCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CryptoAssetFairValueUnrestrictedNoncurrent" id="hsdt_CryptoAssetFairValueUnrestrictedNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
</xsd:schema>
