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  <xs:element id="hsdt_ScheduleOfDigitalAssetsReceivableSubjectToLockUpSchedulesTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsReceivableSubjectToLockUpSchedulesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfDigitalAssetsReceivableActivityTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsReceivableActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfDigitalAssetsFundInvestmentSubjectToLockUpSchedulesTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsFundInvestmentSubjectToLockUpSchedulesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfDigitalAssetsFundInvestmentHoldingTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsFundInvestmentHoldingTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfDigitalAssetsFundInvestmentActivityTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsFundInvestmentActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfDigitalAssetsCollateralReceivableFairValueTableTextBlock" abstract="false" name="ScheduleOfDigitalAssetsCollateralReceivableFairValueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_ScheduleOfOptionContractsTableTextBlock" abstract="false" name="ScheduleOfOptionContractsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="hsdt_PortableNeuromodulationStimulatorBusinessMember" abstract="true" name="PortableNeuromodulationStimulatorBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_WorkingCapital" abstract="false" name="WorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DisposalGroupIncludingDiscontinuedOperationConsiderationUpfrontPayment" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationConsiderationUpfrontPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DisposalGroupIncludingDiscontinuedOperationMaximumEarnoutIncomeReceivable" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationMaximumEarnoutIncomeReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DisposalGroupInclusionTransactionCosts" abstract="false" name="DisposalGroupInclusionTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ScheduleOfSignificantAccountingPoliciesTable" abstract="true" name="ScheduleOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_ScheduleOfSignificantAccountingPoliciesLineItems" abstract="true" name="ScheduleOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_DigitalAssetsNumberOfCustodians" abstract="false" name="DigitalAssetsNumberOfCustodians" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CashAndCashEquivalentsWithCustodian" abstract="false" name="CashAndCashEquivalentsWithCustodian" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_SolanaHoldingsPercentageOfTotalSupply" abstract="false" name="SolanaHoldingsPercentageOfTotalSupply" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_CryptoAssetUnbondingPeriod" abstract="false" name="CryptoAssetUnbondingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hsdt_DigitalAssetHoldingsPercentageOfTotalAssets" abstract="false" name="DigitalAssetHoldingsPercentageOfTotalAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear1" abstract="false" name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear1" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear2" abstract="false" name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear2" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfRestrictedUnitsUnlockedYear3" abstract="false" name="CryptoAssetNumberOfRestrictedUnitsUnlockedYear3" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetQuantityStakedAbstract" abstract="true" name="CryptoAssetQuantityStakedAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfUnrestrictedUnitsStaked" abstract="false" name="CryptoAssetNumberOfUnrestrictedUnitsStaked" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfRestrictedUnitsStacked" abstract="false" name="CryptoAssetNumberOfRestrictedUnitsStacked" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfUnitsStaked" abstract="false" name="CryptoAssetNumberOfUnitsStaked" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_SOLMember" abstract="true" name="SOLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_LockedPipeSOLMember" abstract="true" name="LockedPipeSOLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_CryptoAssetReturnOfMarginCollateral" abstract="false" name="CryptoAssetReturnOfMarginCollateral" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CryptoAssetStakingRewards" abstract="false" name="CryptoAssetStakingRewards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CryptoAssetTransfer" abstract="false" name="CryptoAssetTransfer" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear1" abstract="false" name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear2" abstract="false" name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear2" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear3" abstract="false" name="ReceivableForDigitalAssetsNumberOfRestrictedUnitsUnlockedYear3" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNumberOfRestrictedUnits" abstract="false" name="ReceivableForDigitalAssetsNumberOfRestrictedUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DigitalAssetReceivablesPercentageOfTotalAssets" abstract="false" name="DigitalAssetReceivablesPercentageOfTotalAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNonCurrentRollForward" abstract="true" name="ReceivableForDigitalAssetsNonCurrentRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsTransferToMarginCollateralNonCurrent" abstract="false" name="ReceivableForDigitalAssetsTransferToMarginCollateralNonCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsReturnOfMarginCollateralAmount" abstract="false" name="ReceivableForDigitalAssetsReturnOfMarginCollateralAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsStakingRewards" abstract="false" name="ReceivableForDigitalAssetsStakingRewards" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsUnrestrictedUnitsDistributed" abstract="false" name="ReceivableForDigitalAssetsUnrestrictedUnitsDistributed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ReceivableForDigitalAssetsNetChangeInFairValueOperating" abstract="false" name="ReceivableForDigitalAssetsNetChangeInFairValueOperating" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_PercentageOfOwnershipInDigitalAssetsFund" abstract="false" name="PercentageOfOwnershipInDigitalAssetsFund" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear1" abstract="false" name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear2" abstract="false" name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear2" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear3" abstract="false" name="DigitalAssetsFundNumberOfRestrictedUnitsUnlockedYear3" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundNumberOfRestrictedUnits" abstract="false" name="DigitalAssetsFundNumberOfRestrictedUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundCostRestricted" abstract="false" name="DigitalAssetsFundCostRestricted" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundFairValueRestricted" abstract="false" name="DigitalAssetsFundFairValueRestricted" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DIGITALASSETFUNDINVESTMENTRollForward" abstract="true" name="DIGITALASSETFUNDINVESTMENTRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_DigitalAssetsFundUnrestrictedUnitsDistributed" abstract="false" name="DigitalAssetsFundUnrestrictedUnitsDistributed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CollateralizedTokenMember" abstract="true" name="CollateralizedTokenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_SOLPutOptionMember" abstract="true" name="SOLPutOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfCollateralizedUnit" abstract="false" name="CryptoAssetNumberOfCollateralizedUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DIGITALASSETSCOLLATERALRECEIVABLERollForward" abstract="true" name="DIGITALASSETSCOLLATERALRECEIVABLERollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_DigitalAssetsCollateralReceivableTransferToMarginCollateral" abstract="false" name="DigitalAssetsCollateralReceivableTransferToMarginCollateral" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DigitalAssetsCollateralReceivableReturnOfMarginCollateral" abstract="false" name="DigitalAssetsCollateralReceivableReturnOfMarginCollateral" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DigitalAssetsCollateralReceivableNetChangeInFairValue" abstract="false" name="DigitalAssetsCollateralReceivableNetChangeInFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_DerivativeCreditRiskRelatedContingentFeaturesNetDebtToCapitalizationRatio" abstract="false" name="DerivativeCreditRiskRelatedContingentFeaturesNetDebtToCapitalizationRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_DerivativeCreditRiskRelatedContingentFeaturesSingleDayDeclineInNetEquityPercentage" abstract="false" name="DerivativeCreditRiskRelatedContingentFeaturesSingleDayDeclineInNetEquityPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_DerivativeCreditRiskRelatedContingentFeaturesDefaultOnIndebtednessAmount" abstract="false" name="DerivativeCreditRiskRelatedContingentFeaturesDefaultOnIndebtednessAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CallOptionSpreadMember" abstract="true" name="CallOptionSpreadMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_DerivativeInstrumentsHeldRollForward" abstract="true" name="DerivativeInstrumentsHeldRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_DerivativeNumberOfInstrumentsEnteredDuringPeriod" abstract="false" name="DerivativeNumberOfInstrumentsEnteredDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_DerivativeNumberOfInstrumentsSettledOrExpiredDuringPeriod" abstract="false" name="DerivativeNumberOfInstrumentsSettledOrExpiredDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hsdt_CryptoAssetNumberOfUnitsActivityRollForward" abstract="true" name="CryptoAssetNumberOfUnitsActivityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_DerivativeUnderlyingAssetCryptoAssetEnteredDuringPeriod" abstract="false" name="DerivativeUnderlyingAssetCryptoAssetEnteredDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="hsdt_DerivativeUnderlyingAssetCryptoAssetSettledOrExpiredDuringPeriod" abstract="false" name="DerivativeUnderlyingAssetCryptoAssetSettledOrExpiredDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="hsdt_EquityContractsRDOPutOptionsMember" abstract="true" name="EquityContractsRDOPutOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_EquityContractWarrantLiabilityMember" abstract="true" name="EquityContractWarrantLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_UnrealizedGainLossOnDerivativeInstrumentsStillHeld" abstract="false" name="UnrealizedGainLossOnDerivativeInstrumentsStillHeld" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_SOLDigitalAssetsCollateralReceivableMember" abstract="true" name="SOLDigitalAssetsCollateralReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_LockedSolMember" abstract="true" name="LockedSolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_FundLockedSolMember" abstract="true" name="FundLockedSolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_WrittenPutOptionDerivativeLiabilityMember" abstract="true" name="WrittenPutOptionDerivativeLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_RDOPutOptionDerivativeLiabilityMember" abstract="true" name="RDOPutOptionDerivativeLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_CryptoAssetFairValuePerUnit" abstract="false" name="CryptoAssetFairValuePerUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="hsdt_PurchasedCallOptionsMember" abstract="true" name="PurchasedCallOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_WrittenCallOptionDerivativeLiabilityMember" abstract="true" name="WrittenCallOptionDerivativeLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_ScheduleOfStockholdersEquityTable" abstract="true" name="ScheduleOfStockholdersEquityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_RegisteredDirectOfferingMember" abstract="true" name="RegisteredDirectOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_TransactionRelatedCosts" abstract="false" name="TransactionRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_TemporaryEquityRedemptionRate" abstract="false" name="TemporaryEquityRedemptionRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_CommonSharesRedemptionPriceIncrementalPercentage" abstract="false" name="CommonSharesRedemptionPriceIncrementalPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_PutOptionExerciseTerm" abstract="false" name="PutOptionExerciseTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hsdt_PutOptionDebtToTotalCapitalizationRatioTrigger" abstract="false" name="PutOptionDebtToTotalCapitalizationRatioTrigger" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_ScheduleOfStockholdersEquityLineItems" abstract="true" name="ScheduleOfStockholdersEquityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_ClearStreetLlcMember" abstract="true" name="ClearStreetLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PreFundedWarrants2025Member" abstract="true" name="PreFundedWarrants2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_StapledWarrants2025Member" abstract="true" name="StapledWarrants2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_Pipe2025OfferingsMember" abstract="true" name="Pipe2025OfferingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_September2025PrivatePlacementCashOfferingMember" abstract="true" name="September2025PrivatePlacementCashOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_September2025PrivatePlacementCryptocurrencyOfferingMember" abstract="true" name="September2025PrivatePlacementCryptocurrencyOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_ClassOfWarrantOrRightExercisePriceDiscountFromSharePrice" abstract="false" name="ClassOfWarrantOrRightExercisePriceDiscountFromSharePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hsdt_PlacementAgentCompensationAmount" abstract="false" name="PlacementAgentCompensationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_NonCashFinancingCosts" abstract="false" name="NonCashFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ProceedsOfDigitalAssetsFromIssuanceOrSaleOfEquity" abstract="false" name="ProceedsOfDigitalAssetsFromIssuanceOrSaleOfEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CryptoAssetsReceivedInKindFromPrivatePlacement" abstract="false" name="CryptoAssetsReceivedInKindFromPrivatePlacement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CryptoAssetsReceivedInKindUsdc" abstract="false" name="CryptoAssetsReceivedInKindUsdc" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_CryptoAssetsReceivedInKindUsdt" abstract="false" name="CryptoAssetsReceivedInKindUsdt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_September2025AdvisorWarrantsMember" abstract="true" name="September2025AdvisorWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PanteraBaseAdvisorWarrantsMember" abstract="true" name="PanteraBaseAdvisorWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_SummerBaseAdvisorWarrantsMember" abstract="true" name="SummerBaseAdvisorWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PercentageOfAdditionalWarrantsGrantedBasedOnSharesIssuedUponExercise" abstract="false" name="PercentageOfAdditionalWarrantsGrantedBasedOnSharesIssuedUponExercise" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_AdvisorLockUpPeriod" abstract="false" name="AdvisorLockUpPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hsdt_June2025OfferingMember" abstract="true" name="June2025OfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PercentageOfCashFeeReceived" abstract="false" name="PercentageOfCashFeeReceived" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_PurchaseAgreementMember" abstract="true" name="PurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_ExistingWarrantsMember" abstract="true" name="ExistingWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_InducementWarrantsMember" abstract="true" name="InducementWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_OtherLegalAndRegulatoryExpenses" abstract="false" name="OtherLegalAndRegulatoryExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_ProceedsFromWarrantExercisesNetOfExpenses" abstract="false" name="ProceedsFromWarrantExercisesNetOfExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_AtMarketOffering2025Member" abstract="true" name="AtMarketOffering2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_MaximumAggregateOfferingAmount" abstract="false" name="MaximumAggregateOfferingAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_MaximumCommissionRateAsPercentageOfGrossProceeds" abstract="false" name="MaximumCommissionRateAsPercentageOfGrossProceeds" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_AtMarketOffering2023Member" abstract="true" name="AtMarketOffering2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_SaleOfStockCommissionsPaid" abstract="false" name="SaleOfStockCommissionsPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_BaseAdvisorWarrantsMember" abstract="true" name="BaseAdvisorWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_Warrants2022Member" abstract="true" name="Warrants2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_CommonStockWarrantsMember" abstract="true" name="CommonStockWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_OtherEquityWarrantsMember" abstract="true" name="OtherEquityWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_ClassOfWarrantOrRightRollForward" abstract="true" name="ClassOfWarrantOrRightRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_ClassOfWarrantOrRightIssued" abstract="false" name="ClassOfWarrantOrRightIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hsdt_ClassOfWarrantOrRightExercised" abstract="false" name="ClassOfWarrantOrRightExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hsdt_ClassOfWarrantsOrRightsExercisedButSharesNotYetIssued" abstract="false" name="ClassOfWarrantsOrRightsExercisedButSharesNotYetIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hsdt_ClassOfWarrantOrRightExpired" abstract="false" name="ClassOfWarrantOrRightExpired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hsdt_EquityIncentive2022PlanMember" abstract="true" name="EquityIncentive2022PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_TwoThousandTwentyOneInducementPlanMember" abstract="true" name="TwoThousandTwentyOneInducementPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" abstract="false" name="ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hsdt_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hsdt_Pipe2025OfferingsStrategicAdvisoryAgreementMember" abstract="true" name="Pipe2025OfferingsStrategicAdvisoryAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_Pipe2025OfferingsTradingAdvisoryAgreementMember" abstract="true" name="Pipe2025OfferingsTradingAdvisoryAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_SummerWisdomHoldingsLimitedMember" abstract="true" name="SummerWisdomHoldingsLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PanteraCapitalManagementLpMember" abstract="true" name="PanteraCapitalManagementLpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_TradingAdvisoryAgreementTermsAxis" abstract="true" name="TradingAdvisoryAgreementTermsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="hsdt_TradingAdvisoryAgreementTermsDomain" abstract="true" name="TradingAdvisoryAgreementTermsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_AssetsManagedLessThan1BillionMember" abstract="true" name="AssetsManagedLessThan1BillionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_AssetsManagedBetween1BillionTo5BillionMember" abstract="true" name="AssetsManagedBetween1BillionTo5BillionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_AssetsManagedMoreThan5BillionMember" abstract="true" name="AssetsManagedMoreThan5BillionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_TermOfAgreement" abstract="false" name="TermOfAgreement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hsdt_PassThroughExpenses" abstract="false" name="PassThroughExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_RenewalTermOfAgreement" abstract="false" name="RenewalTermOfAgreement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hsdt_ThresholdInvestmentForCalculatingAssetManagementFee" abstract="false" name="ThresholdInvestmentForCalculatingAssetManagementFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_HongKongTrustCompanyMember" abstract="true" name="HongKongTrustCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_StockRepurchaseProgramMember" abstract="true" name="StockRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_PrivateStockRepurchaseTransactionMember" abstract="true" name="PrivateStockRepurchaseTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hsdt_BusinessCombinationConsiderationTransferable" abstract="false" name="BusinessCombinationConsiderationTransferable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hsdt_BusinessCombinationConsiderationTransferredCashPercentage" abstract="false" name="BusinessCombinationConsiderationTransferredCashPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hsdt_BusinessCombinationConsiderationTransferredEquityPercentage" abstract="false" name="BusinessCombinationConsiderationTransferredEquityPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
</xs:schema>
