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  <xs:element id="pfsa_SubjectToPossibleRedemption" name="SubjectToPossibleRedemption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_FinancialAdvisorsAndVendorsMember" name="FinancialAdvisorsAndVendorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TransactionCosts" name="TransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_WarrantsToPurchaseShares" name="WarrantsToPurchaseShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_SharesOfReverseStockSplit" name="SharesOfReverseStockSplit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_SharesOfWarrantsExercisable" name="SharesOfWarrantsExercisable" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_AggregateExercisePrice" name="AggregateExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_WarrantAgreementMember" name="WarrantAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_LoanCommitmentAssets" name="LoanCommitmentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_GainLossOnAscentWarrant" name="GainLossOnAscentWarrant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_NewLeaseAgreementMember" name="NewLeaseAgreementMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_EarnoutSharesMember" name="EarnoutSharesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TaslyConvertibleNotesMember" name="TaslyConvertibleNotesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_SubsequentEventsDetailsTable" name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ScheduleOfDebtInstrumentsAndTheirChangesAbstract" name="ScheduleOfDebtInstrumentsAndTheirChangesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_SegmentsScheduleofOtherFinancialInformationRegardingTheCompanysOperatingSegmentDetailsTable" name="SegmentsScheduleofOtherFinancialInformationRegardingTheCompanysOperatingSegmentDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ScheduleOfStockCompensationExpenseAbstract" name="ScheduleOfStockCompensationExpenseAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ScheduleOfRelatedPartyTransactionsAbstract" name="ScheduleOfRelatedPartyTransactionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TaslyMember" name="TaslyMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_NVACSponsorMember" name="NVACSponsorMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TheFoundersMember" name="TheFoundersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_NVACMember" name="NVACMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ContractualFloorPrice" name="ContractualFloorPrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ManagementBonuses" name="ManagementBonuses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_PayableInCash" name="PayableInCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuanceInShares" name="IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuanceInShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_OptionAgreementMember" name="OptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AdditionalSharesOfSeriesANon-VotingConvertiblePreferredStock" name="AdditionalSharesOfSeriesANon-VotingConvertiblePreferredStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_GrossProceeds" name="GrossProceeds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_CallOptionExpirationDate" name="CallOptionExpirationDate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_FairValueOfInitialConsideration" name="FairValueOfInitialConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LegalAndOtherProfessionalFees" name="LegalAndOtherProfessionalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_SellerLiquidatedDamagesPercentage" name="SellerLiquidatedDamagesPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_InitialConsiderationFilingDeadline" name="InitialConsiderationFilingDeadline" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_TransactionFees" name="TransactionFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_DesignatedSeriesANon-VotingConvertiblePreferredStockMember" name="DesignatedSeriesANon-VotingConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_UndesignatedSeriesANon-VotingConvertiblePreferredStockMember" name="UndesignatedSeriesANon-VotingConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_WarrantsTextBlock" name="WarrantsTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_AdjustmentsToAdditionalPaidInCapitalExciseTaxPayableAttributableToRedemptionOfCommonStock" name="AdjustmentsToAdditionalPaidInCapitalExciseTaxPayableAttributableToRedemptionOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LossOnSettlementOfForwardShareIssuanceContract" name="LossOnSettlementOfForwardShareIssuanceContract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_ReversalOfExciseTaxPayableAttributableToRedemptionOfCommonStock" name="ReversalOfExciseTaxPayableAttributableToRedemptionOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LossOnDisposalOfDigitalAssets" name="LossOnDisposalOfDigitalAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_GainsLossesOnExtinguishmentOfPaycheckProtectionProgramDebt" name="GainsLossesOnExtinguishmentOfPaycheckProtectionProgramDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ReclassificationOfWarrantLiabilityToAdditionalPaidinCapital" name="ReclassificationOfWarrantLiabilityToAdditionalPaidinCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNote" name="IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNote" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNoteInShares" name="IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNoteInShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNote" name="IssuanceOfSharesInConnectionWithTheConversionOfThePipeNote" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNoteInShares" name="IssuanceOfSharesInConnectionWithTheConversionOfThePipeNoteInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplit" name="CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplitInShares" name="CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplitInShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_LossOnChangeInFairValueOfDigitalAssets" name="LossOnChangeInFairValueOfDigitalAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_ConversionOfDebtToCommonSharesInConnectionWithTheMerger" name="ConversionOfDebtToCommonSharesInConnectionWithTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ConversionOfDebtToCommonSharesInConnectionWithTheMergerInShares" name="ConversionOfDebtToCommonSharesInConnectionWithTheMergerInShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_IssuanceOfCommonStockToNorthviewStockholdersAsAResultOfTheMerger" name="IssuanceOfCommonStockToNorthviewStockholdersAsAResultOfTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_IssuanceOfCommonStockToNorthvieStockholdersAsAResultOfTheMerger" name="IssuanceOfCommonStockToNorthvieStockholdersAsAResultOfTheMerger" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_IssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger" name="IssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_WarrantsPolicyTextBlock" name="WarrantsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_OrganizationDescriptionofBusinessGoingConcernandSignificantRisksandUncertaintiesDetailsTable" name="OrganizationDescriptionofBusinessGoingConcernandSignificantRisksandUncertaintiesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_WorkingCapitalDeficit" name="WorkingCapitalDeficit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_AscentConvertibleNoteAgreementMember" name="AscentConvertibleNoteAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_EquityLineOfCreditPolicyTextBlock" name="EquityLineOfCreditPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_AscentPIPENotesPolicyTextBlock" name="AscentPIPENotesPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ScheduleOfKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteTableTextBlock" name="ScheduleOfKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_RevisionOfPreviouslyIssuedFinancialStatementsPolicyTextBlock" name="RevisionOfPreviouslyIssuedFinancialStatementsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_SeriesANon-VotingConvertiblePreferredStockPolicyTextBlock" name="SeriesANon-VotingConvertiblePreferredStockPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ScheduleOfConvertiblePreferredStockTableTextBlock" name="ScheduleOfConvertiblePreferredStockTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_FairValueMeasurementScheduleofChangesintheFairValueoftheCompanysLevel3RelatedPartyLoanPayableDetailsTable" name="FairValueMeasurementScheduleofChangesintheFairValueoftheCompanysLevel3RelatedPartyLoanPayableDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_LoansPayableRelatedPartyAtFairValue" name="LoansPayableRelatedPartyAtFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_StockIssuedDuringPeriodValueIssuanceOfSharesInConnectionWithTheConversionOfThePIPENote" name="StockIssuedDuringPeriodValueIssuanceOfSharesInConnectionWithTheConversionOfThePIPENote" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_AscentWarrantsMember" name="AscentWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_WarrantIssued" name="WarrantIssued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_PIPEAgreementMember" name="PIPEAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_JulyReverseStockSplitMember" name="JulyReverseStockSplitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_WarrantLiabilities" name="WarrantLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_PercentageOfPurchasePrice" name="PercentageOfPurchasePrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_PercentageOfAdditionalShares" name="PercentageOfAdditionalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_DebtDetailsTable" name="DebtDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TaslyConvertibleDebtRelatedPartyAtFairValueMember" name="TaslyConvertibleDebtRelatedPartyAtFairValueMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_FairValueOfCommonStock" name="FairValueOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ScheduleOfChangesInTheFairValueOfTheCompanySLevel3RelatedPartyLoanPayableAbstract" name="ScheduleOfChangesInTheFairValueOfTheCompanySLevel3RelatedPartyLoanPayableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AugustReverseStockSplitMember" name="AugustReverseStockSplitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_FebruaryReverseStockSplitMember" name="FebruaryReverseStockSplitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AggregateCashProceeds" name="AggregateCashProceeds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_WarrantsLiabilitiesMember" name="WarrantsLiabilitiesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ScheduleOfFairValueOfTheCompanySLevel3RelatedPartyConvertibleDebtPayableAbstract" name="ScheduleOfFairValueOfTheCompanySLevel3RelatedPartyConvertibleDebtPayableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AdvanceNoticeShares" name="AdvanceNoticeShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ShareIssuanceLiability" name="ShareIssuanceLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_IssuedNotesMember" name="IssuedNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ELOCWarrantsMember" name="ELOCWarrantsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_SoldBitcoins" name="SoldBitcoins" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_NumberOfShares" name="NumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_BusinessDays" name="BusinessDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_AccruedStatedInterest" name="AccruedStatedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ScheduleOfReservedSharesOfCommonStockForFutureIssuanceAbstract" name="ScheduleOfReservedSharesOfCommonStockForFutureIssuanceAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_FairValueOfAscentWarrant" name="FairValueOfAscentWarrant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_ShareBasedPaymentArrangementDisclosureAbstract" name="ShareBasedPaymentArrangementDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_LoansPayablesInstrumentMember" name="LoansPayablesInstrumentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_PercentageOfNetRevenues" name="PercentageOfNetRevenues" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ScheduleOfClassesOfWarrantsAbstract" name="ScheduleOfClassesOfWarrantsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_PublicWarrantsMember" name="PublicWarrantsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_HCWWarrantsMember" name="HCWWarrantsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_DebtAccountingBasis" name="DebtAccountingBasis" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_ConversionOfSeriesANon-VotingConvertiblePreferredStockMember" name="ConversionOfSeriesANon-VotingConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ContractResearchOrganizationAndRegulatoryCosts" name="ContractResearchOrganizationAndRegulatoryCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_LossOnExtinguishmentOfRelatedPartyDebt" name="LossOnExtinguishmentOfRelatedPartyDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ProbabilityOfObtainingRequiredFinancingMember" name="ProbabilityOfObtainingRequiredFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_FairValueOfCommonStocksMember" name="FairValueOfCommonStocksMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_FairValueOfIssuanceCost" name="FairValueOfIssuanceCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_CashProceeds" name="CashProceeds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_ReservationOfMaximumAggregateNumberOfShares" name="ReservationOfMaximumAggregateNumberOfShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_FairValueOfPreferredStock" name="FairValueOfPreferredStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_OperatingLeaseObligationsMember" name="OperatingLeaseObligationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_UnpaidWages" name="UnpaidWages" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_StockholdersDeficitDetailsTable" name="StockholdersDeficitDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_CommonStockWarrantsDetailsTable" name="CommonStockWarrantsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_StockOptionPlanDetailsTable" name="StockOptionPlanDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_TwoThousandTenEquityIncentivePlanMember" name="TwoThousandTenEquityIncentivePlanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ThousandTwentyFiveIncentivePlanMember" name="ThousandTwentyFiveIncentivePlanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AmountsPayable" name="AmountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LossOnExtinguishmentOfRelatedPartyAmountDebt" name="LossOnExtinguishmentOfRelatedPartyAmountDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_CommonStockWarrantsMember" name="CommonStockWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_PayableInShares" name="PayableInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_NetLossPerShareAttributabletoCommonStockholdersDetailsTable" name="NetLossPerShareAttributabletoCommonStockholdersDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_PercentageOfClosingSharePrice" name="PercentageOfClosingSharePrice" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="pfsa_PromissoryNoteMember" name="PromissoryNoteMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_AdministrativePersonnelCompensationCostsIncludingStockbasedCompensation" name="AdministrativePersonnelCompensationCostsIncludingStockbasedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_RentAndOfficeCosts" name="RentAndOfficeCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_LegalAndAccountingCosts" name="LegalAndAccountingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_CommitmentsandContingenciesDetailsTable" name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_PublicWarrantMember" name="PublicWarrantMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ConvertibleAndPromissoryNotesPayable" name="ConvertibleAndPromissoryNotesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_GainOnChangeInFairValueOfRelatedPartyConvertibleDebt" name="GainOnChangeInFairValueOfRelatedPartyConvertibleDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_StockIssuedDuringPeriodValueIssuanceOfWarrantsToFinancialAdvisorInConnectionWithTheMerger" name="StockIssuedDuringPeriodValueIssuanceOfWarrantsToFinancialAdvisorInConnectionWithTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_StockIssuedDuringPeriodSharesIssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger" name="StockIssuedDuringPeriodSharesIssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_FairValueMeasurementScheduleKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteAbstract" name="FairValueMeasurementScheduleKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_CallOptionAsset" name="CallOptionAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_Non-cashExpensesFromSettlementOfLiabilities" name="Non-cashExpensesFromSettlementOfLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_Non-cashIssuanceOfInducementSharesInConnectionWithTheMerger" name="Non-cashIssuanceOfInducementSharesInConnectionWithTheMerger" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_ScheduleOfKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteLineItems" name="ScheduleOfKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_NoncashWarrantIssuanceExpense" name="NoncashWarrantIssuanceExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_MeasurementInputDebtRateMember" name="MeasurementInputDebtRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="pfsa_ConversionOfPreferredStockIntoCommonStock" name="ConversionOfPreferredStockIntoCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfHCWWarrantsInLieuOfCashPayment" name="IssuanceOfHCWWarrantsInLieuOfCashPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LossOnExtinguishmentOfDebt" name="LossOnExtinguishmentOfDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_LossOnExtinguishmentOfDebtRelatedParty" name="LossOnExtinguishmentOfDebtRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithELOCTransactionCosts" name="IssuanceOfSharesInConnectionWithELOCTransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSharesInConnectionWithNon-RecourseNoteToEmployees" name="IssuanceOfSharesInConnectionWithNon-RecourseNoteToEmployees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_Non-cashIssuanceOfWarrantsAssociatedWithELOCCosts" name="Non-cashIssuanceOfWarrantsAssociatedWithELOCCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_NetCashReceivedFromTheReverseRecapitalization" name="NetCashReceivedFromTheReverseRecapitalization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_PaymentsForFractionalSharesInConnectionWithAugustReverseStockSplit" name="PaymentsForFractionalSharesInConnectionWithAugustReverseStockSplit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilities" name="IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_NoncashIssuanceOfCommonAndSeriesANon-votingConvertiblePreferredStockInConnectionWithTheG3CallOption" name="NoncashIssuanceOfCommonAndSeriesANon-votingConvertiblePreferredStockInConnectionWithTheG3CallOption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_NoncashIssuanceOfSeriesANon-votingConvertiblePreferredStockToSettleLiabilities" name="NoncashIssuanceOfSeriesANon-votingConvertiblePreferredStockToSettleLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilitiesInShares" name="IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilitiesInShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuance" name="IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="pfsa_IssuanceOfWarrantsInConnectionWithELOCCosts" name="IssuanceOfWarrantsInConnectionWithELOCCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
</xs:schema>
