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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Information</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PIPEConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PIPE Convertible Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PIPEConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PIPEConvertible Note Member</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Following Key Inputs as Affected by the Reverse Stock Splits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ChangeInAccountingEstimatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in Accounting Estimate</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ChangeInAccountingEstimatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in Accounting Estimate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Financial Instruments that are Measured at Fair Value on a Recurring Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Liabilities at Fair Value [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Fair Value of the Company&#8217;s Level 3 Related Party Convertible Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Changes in the Fair Value of the Company&#8217;s Level 3 Loans Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetRelatedDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Components [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationDateOfIncorporation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incorporated date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationDateOfIncorporation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, Date of Incorporation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Warrants [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Classes of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stock Option Activity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Stock Option Activity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Activity [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Stock Compensation Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNoteRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly Convertible Note - Related Party [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNoteRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Convertible Note Related Party Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RelatedPartyConvertiblePromissoryNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Convertible Promissory Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RelatedPartyConvertiblePromissoryNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Convertible Promissory Note Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TotalLevel3RelatedPartyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Level 3 Related Party Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TotalLevel3RelatedPartyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Level3 Related Party Convertible Notes Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentPIPENotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ascent PIPE Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentPIPENotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ascent PIPENotes Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIssuedPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionPricePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion price percentage.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant liabilities at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants and Rights Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Conversion of debt to equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedNetLabel">Gain on change in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on change in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on change in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Adjustment of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of warrant expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RepresentativesWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Representative&#8217;s Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RepresentativesWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Representatives Warrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Assets:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetFairValueCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Digital assets (Bitcoin)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetFairValueCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetFairValueCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crypto Asset, Fair Value, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfInputsIntoTheMonteCarloSimulationModelForTheWarrantLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Inputs Into The Monte Carlo Simulation Model For The Warrant Liabilities Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement - Schedule of Company&#8217;s Financial Assets and Liabilities Measured at Fair Value (Details) [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible notes due to related parties held at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt, Fair Value Disclosures</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible loans payable at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt, Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total liabilities measured at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant Liabilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liabilities Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payables Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free interest rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Risk Free Interest Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Expected term (years) [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining term (years) [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Expected Term [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Price Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares sold</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of shares of series A non-voting convertible preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Number of Shares Issued in Transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ELOCPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ELOC Purchase Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ELOCPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ELOCPurchase Agreement Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TrueupCommonSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">True-up shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TrueupCommonSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trueup Common Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TrueupCommonSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of true up shares issued.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BeneficialOwnershipLimitationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial ownership limitation percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BeneficialOwnershipLimitationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Ownership Limitation Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BeneficialOwnershipLimitationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">It is a beneficial ownership limitation rate on conversion of the notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Significant Accounting Policies [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SummaryofSignificantAccountingPoliciesDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Significant Accounting Policies (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Changes in the Fair Value of the Company&#8217;s Level 3 Loans Payable [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value of the Company&#8217;s Level 3 Related Party Convertible Debt Payable [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Fair value, beginning balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Fair value, ending balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on change in the fair value of related party convertible debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionValues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intrinsic conversion value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionValues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion Values</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionValues_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of conversion value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeniorNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible senior notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeniorNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Senior Note Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PPPLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible loans payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PPPLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">PPP Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PPPLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PPPLoan Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FinancingArrangementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Arrangement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FinancingArrangementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Arrangement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOfFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt extinguishment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOfFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Extinguishment of Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOfFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of debt extinguishment of fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOnLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt extinguishment on loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOnLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Extinguishment on Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishmentOnLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of debt extinguishment on loss.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingBorrowingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding Borrowings [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingBorrowingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Outstanding Borrowings [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly Convertible Note [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Convertible Note Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, par value (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Par or Stated Value Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractualTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contractual term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractualTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the contractual term.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate During Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash payments percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The rate of cash payments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Increase (Decrease)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued other liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Accrued Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total accrued liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities and Other Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfCompanySFinancialAssetsAndLiabilitiesMeasuredAtFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement - Schedule of Company&#8217;s Financial Assets and Liabilities Measured at Fair Value (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PrivatePlacementWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Private Placement Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PrivatePlacementWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Private Placement Warrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfDebtToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of debt to equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfDebtToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Change in fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfDebtToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion Of Debt To Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfDebtToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of debt to equity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt extinguishment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtExtinguishment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of Debt extinguishment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AssumptionOfRelatedPartyConvertibleNoteUponClosingOfTheBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assumption of related party convertible note upon closing of the Business Combination</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AssumptionOfRelatedPartyConvertibleNoteUponClosingOfTheBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Represent the Assumption of related party convertible note upon closing of the Business Combination.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainOnChangeInTheFairValueOfRelatedPartyConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain on change in the fair value of related party convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainOnChangeInTheFairValueOfRelatedPartyConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Represent Amount of Gain on change in the fair value of related party convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Issued for Services</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOptionChangesInFairValueGainLoss1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on change in the fair value of convertible loans payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOptionChangesInFairValueGainLoss1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loss on disposal of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOptionChangesInFairValueGainLoss1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Option, Changes in Fair Value, Gain (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Warrant of shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ProceedsReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds received</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ProceedsReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds received.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractualObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Obligation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractualObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contractual Obligation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetRetirementObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing obligation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetRetirementObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Retirement Obligation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IncrementalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IncrementalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of incremental fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregatePayableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate payable amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregatePayableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of aggregate payable amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Non-Voting Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionPriceOfPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion price of per share (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionPriceOfPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion Price Of Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionPriceOfPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion price of per share.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValueOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible promissory note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValueOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance">Series A Non-Voting Convertible Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Non-Voting Convertible Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance">Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Series A Non-Voting Convertible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OriginalDiscountAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Original discount amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OriginalDiscountAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Original Discount Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OriginalDiscountAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the original discount amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Debt Instruments and their Changes [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stated interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stated Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of interest payable.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of debt discount and issuance costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs and Discounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfOtherFinancialInformationRegardingTheCompanySOperatingSegmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Other Financial Information Regarding The Company SOperating Segment Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SegmentsScheduleofOtherFinancialInformationRegardingTheCompanysOperatingSegmentParentheticalsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments - Schedule of Other Financial Information Regarding The Company&#8217;s Operating Segment (Parentheticals) (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Interest Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantExercisePriceIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant price (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantExercisePriceIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant, Exercise Price, Increase</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtConversionPricesPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Conversion price(s) per share, as affected by the Reverse Stock Splits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtConversionPricesPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion Prices Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtConversionPricesPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The price per share of the conversion feature embedded in the debt instrument.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtRepayments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Debt repayments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtRepayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Repayments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtRepayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from issuance of PIPE notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfDilutedNetLossPerShareAttributableToCommonStockholdersAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Diluted Net Loss Per Share Attributable To Common Stockholders Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Security, Excluded EPS Calculation [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainLossOnSettlementLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain loss on settlement liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainLossOnSettlementLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain loss on settlement liabilities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on extinguishment of PPP loan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance">Loss on extinguishment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on extinguishment of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Extinguishment of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Extinguishment of Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfFollowingKeyInputsAsAffectedByTheReverseStockSplitsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Following Key Inputs as Affected by the Reverse Stock Splits [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleDebtRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly Convertible Debt - Related Party [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleDebtRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Convertible Debt Related Party Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConvertiblePromissoryNoteRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Promissory Note - Related Party [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConvertiblePromissoryNoteRelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Promissory Note Related Party Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PromissoryNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Promissory Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PromissoryNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Promissory Notes Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DOInsuranceFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">D&amp;O Insurance Financing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DOInsuranceFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">DOInsurance Financing Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_JuniorConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Junior Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_JuniorConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Junior Convertible Notes Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StatementOfIncomeLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StatementOfIncomeLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdministrativeServiceFeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Administrative Service Fee [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt forgiven</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Forgiveness</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount represents all or part of a debt obligation has been canceled by the lender.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesIssuableUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issuable upon exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesIssuableUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issuable Upon Exercise Of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesIssuableUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shares issuable upon exercise of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RelatedPartyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RelatedPartyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OptionsToPurchaseCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options to Purchase Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OptionsToPurchaseCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Options To Purchase Common Stock Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingOptionsUnderTwoThousandTenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding options under 2025 Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingOptionsUnderTwoThousandTenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Outstanding Options Under Two Thousand Ten Plan Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfOptionsUnderTheTwoThousandTenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of options under the 2025 Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfOptionsUnderTheTwoThousandTenPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Options Under The Two Thousand Ten Plan Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingCommonStockWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding common stock warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OutstandingCommonStockWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Outstanding Common Stock Warrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfEarnoutSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of earnout shares [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfEarnoutSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Earnout Shares Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock declared dividends</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends, Per Share, Declared</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Convertible senior</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible senior notes and loans payable at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SubjectToPossibleRedemption_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subject to possible redemption</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SubjectToPossibleRedemption_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subject to Possible Redemption</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SubjectToPossibleRedemption_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of subject to possible redemption.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockSharesConverted1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Convertible shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockSharesConverted1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares converted (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockSharesConverted1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Stock, Shares Converted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAverageAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Owed amount of financial advisors, investors</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAverageAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAverageAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Average Amount Outstanding, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FinancialAdvisorsAndVendorsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Advisors and Vendors [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transaction Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfIncomeLocationBalanceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Location, Statement of Income, Balance [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsToPurchaseShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsToPurchaseShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants to purchase shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsToPurchaseShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of  warrants to purchase.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse stock split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares of Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of Reverse Stock Split.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfWarrantsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfWarrantsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares of Warrants Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SharesOfWarrantsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of Warrants will be exercisable.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregateExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate exercise price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregateExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregateExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of  aggregate exercise price.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transactions [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NatureOfCommonOwnershipOrManagementControlRelationships_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nature of relationship</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NatureOfCommonOwnershipOrManagementControlRelationships_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nature of Common Ownership or Management Control Relationships</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionDescriptionOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Description of investment or transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionDescriptionOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction, Description of Transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Administrative service fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction, Amounts of Transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Basic and Diluted Net Loss Per Share Attributable [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsAttributableToParentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsAttributableToParentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoanCommitmentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Commitment Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoanCommitmentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of Loan Commitment Asset.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainLossOnAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) on ascent warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainLossOnAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Ascent Warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainLossOnAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of Gain Loss on Ascent Warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating and Nonoperating</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NewLeaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New Lease Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NewLeaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Lease Agreement Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Segment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Segments [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Other Financial Information Regarding The Company&#8217;s Operating Segment [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating expenses:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Research personnel compensation costs, including stock-based compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Noncash Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance">Gain (loss) on change in the fair value of convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain (loss) on change in the fair value of convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss) on Derivatives</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShorttermDebtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value of conversion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShorttermDebtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Loans Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposit Liabilities, Accrued Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBankLoansAndNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum borrowing capacity short-term loan agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBankLoansAndNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Bank Loans and Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_EarnoutSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnout Shares [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_EarnoutSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnout Shares Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Convertible Notes Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of operating segments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Operating Segments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Description of segment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmIndividualTitleAndPositionOrGroupOrCommitteeNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmIndividualTitleAndPositionOrGroupOrCommitteeNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SubsequentEventsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtInterestRateIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtInterestRateIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Interest Rate Increase</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfDebtInstrumentsAndTheirChangesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Debt Instruments And Their Changes Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities, Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Diluted Net Loss Per Share Attributable to Common Stockholders [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SegmentsScheduleofOtherFinancialInformationRegardingTheCompanysOperatingSegmentDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments - Schedule of Other Financial Information Regarding The Company&#8217;s Operating Segment (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercisable of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Date from which Warrants or Rights Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares underlying warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Number of Securities Called by Warrants or Rights</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options cancelled/forfeited, Weighted-Average Exercise Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balances, Number of Options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balances, Number of Options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balances, Weighted-Average Exercise Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balances, Weighted-Average Exercise Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfStockCompensationExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Stock Compensation Expense Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Stock Compensation Expense [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfRelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Related Party Transactions Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NVACSponsorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NVAC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NVACSponsorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NVACSponsor [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TheFoundersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Founders [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TheFoundersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Founders Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NVACMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NVAC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NVACMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NVAC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt extinguishment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extinguishment of Debt, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RecapitalizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt assumed in connection with reverse recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RecapitalizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Recapitalization Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Options cancelled/forfeited, Number of options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractualFloorPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contractual floor price (In dollar per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractualFloorPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contractual Floor Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractualFloorPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of contractual floor price.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ManagementBonuses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management bonuses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ManagementBonuses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Bonuses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ManagementBonuses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of management bonuses.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payable in cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payable in cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInCash_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of payable in cash.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred stock, shares authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A non-voting convertible preferred stock, shares authorized (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Preferred stock, par value per share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance">Series A preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A non-voting convertible preferred stock, par value (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuanceInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A non-voting convertible preferred stock and common stock in connection with G3 Call Option issuance (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuanceInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Series A Non-Voting Convertible Preferred Stock And Common Stock In Connection With G3 Call Option Issuance (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockAndCommonStockInConnectionWithG3CallOptionIssuanceInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the share value of issuance of series A non-voting convertible preferred stock and common stock in connection with G3 call option issuance (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Option Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Option Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdditionalSharesOfSeriesANon-VotingConvertiblePreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Shares of Series A Non-Voting Convertible Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdditionalSharesOfSeriesANon-VotingConvertiblePreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional shares of series A non-voting convertible preferred stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GrossProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Aggregate gross proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GrossProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GrossProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gross Proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GrossProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gross proceeds.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Call option expiration date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Call Option Expiration Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Call option expiration date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfInitialConsideration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of initial consideration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfInitialConsideration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Initial Consideration</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfInitialConsideration_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of initial consideration.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal and other professional fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal and Other Professional Fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legal and other professional fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SellerLiquidatedDamagesPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Seller liquidated damages percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SellerLiquidatedDamagesPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Seller Liquidated Damages Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SellerLiquidatedDamagesPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Seller liquidated damages percentage.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_InitialConsiderationFilingDeadline_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial consideration filing deadline</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_InitialConsiderationFilingDeadline_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Initial Consideration Filing Deadline</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_InitialConsiderationFilingDeadline_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Initial consideration filing deadline.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Schedule of Convertible Preferred Stock [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stockholders&#8217; Equity (Deficit) [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Warrants [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of additional paid-in capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of convertible senior notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transaction Fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of transaction fees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse stock splits shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Reverse stock split, conversion ratio</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Reverse Stock Splits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedBonusesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Employee-bonuses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedBonusesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Bonuses, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConversionBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Series A non-voting preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConversionBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Conversion Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Convertible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DesignatedSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designated Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DesignatedSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designated Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_UndesignatedSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undesignated Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_UndesignatedSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undesignated Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Converted Instrument, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion into common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Converted Instrument, Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants Text Block</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Option Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of warrants in connection with PIPE notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Warrant Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdjustmentsToAdditionalPaidInCapitalExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reversal of excise tax payable attributable to redemption of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdjustmentsToAdditionalPaidInCapitalExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Excise tax Payable Attributable to Redemption of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdjustmentsToAdditionalPaidInCapitalExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of excise tax payable attributable to redemption of common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnSettlementOfForwardShareIssuanceContract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on settlement of forward share issuance contract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnSettlementOfForwardShareIssuanceContract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss On Settlement Of Forward Share Issuance Contract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnSettlementOfForwardShareIssuanceContract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of loss on settlement of forward share issuance contract.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReversalOfExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reversal of excise tax payable attributable to redemption of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReversalOfExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reversal of Excise Tax Payable Attributable to Redemption of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReversalOfExciseTaxPayableAttributableToRedemptionOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of reversal of excise tax payable attributable to redemption of common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-In Capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with the conversion of the PIPE note (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">APIC, Share-Based Payment Arrangement, Increase for Cost Recognition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnDisposalOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on disposal of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnDisposalOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on disposal of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnDisposalOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss On Disposal Of Digital Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnDisposalOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of loss on change in fair value of digital assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest expense (including related parties amounts of $4 and $97 for the three months ended September 30, 2026 and 2025, respectively, and $14 and $1,326 for the nine months ended September 30, 2026 and 2025, respectively)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Interest expense (including related parties amounts of $4 and $97 for the three months ended September 30, 2026 and 2025, respectively, and $14 and $1,326 for the nine months ended September 30, 2026 and 2025, respectively)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Nonoperating</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainsLossesOnExtinguishmentOfPaycheckProtectionProgramDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on extinguishment of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainsLossesOnExtinguishmentOfPaycheckProtectionProgramDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses On Extinguishment Of Paycheck Protection Program Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainsLossesOnExtinguishmentOfPaycheckProtectionProgramDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingInterestExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Financing costs, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingInterestExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Financing costs, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid expenses and other current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense and Other Assets, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other non-current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets, Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total stockholders&#8217; equity (deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in operating assets and liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense, related parties</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOther_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Related parties amounts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReclassificationOfWarrantLiabilityToAdditionalPaidinCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification of warrant liability to additional paid-in capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReclassificationOfWarrantLiabilityToAdditionalPaidinCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of Reclassification of warrant liability to additional paid-in capital.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Components</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Balance Sheet Disclosures [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Paid, after Refund Received, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNote_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with the conversion of the related party convertible promissory note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNote_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Shares In Connection With The Conversion Of The Related Party Convertible Promissory Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNote_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the value of issuance of shares in connection with the conversion of the related party convertible promissory note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with the conversion of the related party convertible promissory note (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Shares In Connection With The Conversion Of The Related Party Convertible Promissory Note (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfTheRelatedPartyConvertiblePromissoryNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the share value of issuance of shares in connection with the conversion of the related party convertible promissory note(in shares).</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNote_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Shares in Connection with the Conversion of the Pipe Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNote_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Shares in Connection with the Conversion of the Pipe Note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNote_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the value of issuance of shares in connection with the conversion of the pipe note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Shares in Connection with the Conversion of the Pipe Note (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Shares in Connection with the Conversion of the Pipe Note (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithTheConversionOfThePipeNoteInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the share value of issuance of shares in connection with the conversion of the pipe note(in shares).</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cancellation of Fractional Shares in Connection with August Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cancellation of Fractional Shares in Connection with August Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the value of cancellation of fractional shares in connection with august reverse stock split.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplitInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cancellation of Fractional Shares in Connection with August Reverse Stock Split (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplitInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cancellation of Fractional Shares in Connection with August Reverse Stock Split (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CancellationOfFractionalSharesInConnectionWithAugustReverseStockSplitInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the share value of cancellation of fractional shares in connection with august reverse stock split (in shares).</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of preferred stock into common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Conversion of Convertible Securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of preferred stock into common stock (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Conversion of Convertible Securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued to employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Employee Stock Ownership Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued to employees (In Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Employee Stock Ownership Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnChangeInFairValueOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on change in fair value of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnChangeInFairValueOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Loss on change in fair value of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnChangeInFairValueOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on change in fair value of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnChangeInFairValueOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on change in fair value of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnChangeInFairValueOfDigitalAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Loss on change in fair value of digital assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A non-voting convertible preferred stock, shares issued (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred stock, shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A non-voting convertible preferred stock, shares outstanding (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred stock, shares outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares authorized (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares issued (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Research and development</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Research and development expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Research and Development Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">General and administrative expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from ELOC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Lines of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCountry_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Country</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityExTransitionPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Ex Transition Period</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of induced common shares to related party in connection with the merger</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Description of Business, Going Concern and Significant Risks and Uncertainties [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for accounting policy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OrganizationDescriptionofBusinessGoingConcernandSignificantRisksandUncertaintiesDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Description of Business, Going Concern and Significant Risks and Uncertainties (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Working capital deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Working Capital Deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of working capital deficit as of balance sheet date.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentConvertibleNoteAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ascent Convertible Note Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeasesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeasesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Leases [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_EquityLineOfCreditPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ELOC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_EquityLineOfCreditPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Line Of Credit Policy Text Block</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_EquityLineOfCreditPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for equity line of credit.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Financial Instruments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentPIPENotesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ascent PIPE Notes</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentPIPENotesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The policy disclosures of ascent PIPE notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-Based Compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Pronouncements</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfConversionsOfStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Reserved Shares of Common Stock for Future Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfConversionsOfStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Conversions of Stock [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Related Party Transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Related Party Transactions [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Loss Per Share Attributable to Common Stockholders [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Other Financial Information Regarding The Company&#8217;s Operating Segment</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Debt Instruments and their Changes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofChangesintheFairValueoftheCompanysLevel3RelatedPartyLoanPayableDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement - Schedule of Changes in the Fair Value of the Company&#8217;s Level 3 Loans Payable (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleofChangesintheFairValueoftheCompanysLevel3RelatedPartyLoanPayableDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement - Schedule of Changes in the Fair Value of the Company&#8217;s Level 3 Related Party Loan Payable (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayableRelatedPartyAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayableRelatedPartyAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayableRelatedPartyAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible loans payable at fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayableRelatedPartyAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable Related Party At Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayableRelatedPartyAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loans payable - related party at fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfSharesInConnectionWithTheConversionOfThePIPENote_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Conversion of debt to equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfSharesInConnectionWithTheConversionOfThePIPENote_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Issuance Of Shares In Connection With The Conversion Of The PIPENote</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfSharesInConnectionWithTheConversionOfThePIPENote_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of shares in connection with the conversion of the PIPE note.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AscentWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ascent Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of warrant Issued.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value, Net, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PIPEAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PIPE agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_JulyReverseStockSplitMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">July Reverse Stock Split [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of warrant liabilities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accrued Liabilities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Employee Benefits, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxes, Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excise tax payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxes Payable, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid in capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid in Capital, Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of purchase price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Purchase Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of purchase price.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfAdditionalShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of additional shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfAdditionalShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Additional Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfAdditionalShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of additional shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crypto Asset, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized losses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crypto Asset, Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetMining_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CryptoAssetMining_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crypto Asset, Mining</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleDebtRelatedPartyAtFairValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tasly Convertible Debt - Related Party at Fair Value [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TaslyConvertibleDebtRelatedPartyAtFairValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tasly Convertible Debt Related Party At Fair Value Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Notes Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockConvertibleConversionPriceDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion price of common stock (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockConvertibleConversionPriceDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Convertible, Conversion Price, Decrease</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible debt amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible promissory note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfChangesInTheFairValueOfTheCompanySLevel3RelatedPartyLoanPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Changes in the Fair Value of the Company&#8217;s Level 3 Loans Payable [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse stock split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Consideration Received on Transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AugustReverseStockSplitMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">August Reverse Stock Split [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FebruaryReverseStockSplitMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">February Reverse Stock Split [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregateCashProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate cash proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AggregateCashProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of aggregate cash proceeds.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants Liabilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_WarrantsLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants Liabilities Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfFairValueOfTheCompanySLevel3RelatedPartyConvertibleDebtPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value of the Company&#8217;s Level 3 Related Party Convertible Notes Payable [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdvanceNoticeShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Advance notice shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdvanceNoticeShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advance Notice Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdvanceNoticeShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Advance notice shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ShareIssuanceLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Forward share issuance liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ShareIssuanceLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Issuance Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ShareIssuanceLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share issuance liability.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investor principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Balance, Principal Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Financing Costs, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Fair Value Adjustment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuedNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issued Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuedNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issued Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ELOCWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ELOC Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ELOCWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ELOCWarrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingEstimateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse stock split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity, Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Price per share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SoldBitcoins_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of bitcoins</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SoldBitcoins_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sold Bitcoins</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_SoldBitcoins_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sold bitcoins.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionOriginalDebtInterestRateOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion shares percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionOriginalDebtInterestRateOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Original Debt, Interest Rate of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BusinessDays_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business days</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BusinessDays_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Days</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_BusinessDays_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">business days.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise price per share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued, Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AccruedStatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued stated interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AccruedStatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Stated Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AccruedStatedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of accrued stated interest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at Ending</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at Beginning</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfReservedSharesOfCommonStockForFutureIssuanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Reserved Shares of Common Stock for Future Issuance [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Stock [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Denominator:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares used to compute basic net loss per share (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stock Compensation Expense [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value of ascent warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Ascent Warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfAscentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Fair value of Ascent Warrant.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ShareBasedPaymentArrangementDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of the Following Key Inputs as Affected by the Reverse Stock Splits [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected term (years)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayablesInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Loans Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LoansPayablesInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payables Instrument [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfNetRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of net revenue.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfNetRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Net Revenues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfNetRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of  net revenue.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ScheduleOfClassesOfWarrantsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Classes Of Warrants Abstract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PublicWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PublicWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Warrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options granted, Number of Options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options granted, Weighted-Average Exercise Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Reserved Shares of Common Stock for Future Issuance [Line items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reserved shares of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Capital Shares Reserved for Future Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_HCWWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">HCW Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_HCWWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">HCWWarrants Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Classes of Warrants [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares used to compute diluted net loss per share (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted-average shares of common stock outstanding, diluted (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss per share attributable to common stockholders - basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss per share, basic (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss per share attributable to common stockholders diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss per share, diluted (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtAccountingBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtAccountingBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Accounting Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_DebtAccountingBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt accounting basis.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undistributed losses allocated to participating securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Earnings (Loss) Allocated to Participating Securities, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Series A Non-Voting Convertible Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfSeriesANon-VotingConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Series A Non-Voting Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income (expenses)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonoperating Income (Expense) [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAcquisitionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proposed Acquisition of G3 [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAcquisitionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proposed Acquisition of G3</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAcquisitionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Acquisition [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Acquisition [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractResearchOrganizationAndRegulatoryCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract research organization and regulatory costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractResearchOrganizationAndRegulatoryCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract Research Organization and Regulatory Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ContractResearchOrganizationAndRegulatoryCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of Contract research organization and regulatory costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Option Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on extinguishment of related-party debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on Extinguishment of Related Party Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of Loss on extinguishment of related-party debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Acquisition [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountForLackOfMarketabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount for lack of marketability [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountForLackOfMarketabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Discount for Lack of Marketability [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputConversionPriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Probability of conversion [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputConversionPriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Conversion Price [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ProbabilityOfObtainingRequiredFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Probability of obtaining required financing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ProbabilityOfObtainingRequiredFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Probability of obtaining required financing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfCommonStocksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of Common stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfCommonStocksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair value of Common stocks [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfIssuanceCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Issuance Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfIssuanceCost_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of fair value of issuance cost.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Measurement Input</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CashProceeds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of cash proceeds.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReservationOfMaximumAggregateNumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reservation of maximum aggregate number of shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReservationOfMaximumAggregateNumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reservation of Maximum Aggregate Number of Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ReservationOfMaximumAggregateNumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of reservation of maximum aggregate number of shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesNetOfInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net incremental expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesNetOfInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues, Net of Interest Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value of shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with exercise of ELOC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, New Issues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of preferred stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueOfPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of fair value of preferred stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accrued bonuses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Bonuses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repaid of amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Short-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OperatingLeaseObligationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease Obligations [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_OperatingLeaseObligationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Obligations [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLegalSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLegalSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Legal Settlements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_UnpaidWages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid wages</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_UnpaidWages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unpaid Wages</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_UnpaidWages_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of unpaid wages.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockholdersDeficitDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Deficit (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockVotingRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock vote</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockVotingRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Voting Rights</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends declared (in Dollars)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnout shares allocated</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Issuance of shares in connection with exercise of ELOC (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, New Issues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CommonStockWarrantsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Warrants (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockOptionPlanDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Option Plan (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TwoThousandTenEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2010 Equity Incentive Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_TwoThousandTenEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Ten Equity Incentive Plan Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ThousandTwentyFiveIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025 Incentive Plan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ThousandTwentyFiveIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Thousand Twenty Five Incentive Plan Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Option Plan [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance to employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Employee Stock Purchase Plans</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Related Party [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding borrowings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AmountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amounts payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AmountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amounts Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AmountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The represents of amounts payable.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyAmountDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on extinguishment of related party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyAmountDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on Extinguishment of Related Party Amount Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfRelatedPartyAmountDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount loss on extinguishment of related party amount debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion price per share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Convertible, Conversion Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CommonStockWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payable in shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payable in shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PayableInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Amount of payable in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NetLossPerShareAttributabletoCommonStockholdersDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Loss Per Share Attributable to Common Stockholders (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Loss Per Share Attributable to Common Stockholders [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Converted shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Stock, Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockConvertibleConversionPriceIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Price per shares converted (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockConvertibleConversionPriceIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Convertible, Conversion Price, Increase</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfClosingSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of closing share price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfClosingSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Closing Share Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PercentageOfClosingSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of closing share price.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PromissoryNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Promissory Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PromissoryNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Promissory Note Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forecast [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forecast [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdministrativePersonnelCompensationCostsIncludingStockbasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Administrative personnel compensation costs, including stock-based compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdministrativePersonnelCompensationCostsIncludingStockbasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Administrative Personnel Compensation Costs Including Stockbased Compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_AdministrativePersonnelCompensationCostsIncludingStockbasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of administrative personnel compensation costs, including stock-based compensation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RentAndOfficeCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rent and office costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RentAndOfficeCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rent And Office Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_RentAndOfficeCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of rent and office costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndAccountingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal and accounting costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndAccountingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal And Accounting Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LegalAndAccountingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of legal and accounting costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total segment expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total operating expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loss from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income (Expense)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total other expense, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other expense, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonoperating Income (Expense)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralInsuranceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insurance expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralInsuranceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General Insurance Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CommitmentsandContingenciesDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedBorrowingInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of borrowing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedBorrowingInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Borrowing, Interest Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sublease income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sublease Income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Lease, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PublicWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Warrant [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PublicWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Warrant Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available for grant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesAndExciseTaxPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excise tax payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesAndExciseTaxPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sales and Excise Tax Payable, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due to related party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Promissory notes and other</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConvertibleAndPromissoryNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible and promissory notes payable to related parties</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConvertibleAndPromissoryNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible And Promissory Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConvertibleAndPromissoryNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock: $0.0001 par value &#8211; 600,000,000 shares authorized at September 30, 2026 and December 31, 2025; 2,516,564 and 12,320 shares issued and outstanding at September 30, 2026 and December 31, 2025, respectively</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainOnChangeInFairValueOfRelatedPartyConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss (gain) on change in fair value of convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainOnChangeInFairValueOfRelatedPartyConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain On Change In Fair Value Of Related Party Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_GainOnChangeInFairValueOfRelatedPartyConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain on change in fair value of related party convertible debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from investing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDisposalCryptoAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDisposalCryptoAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Disposal, Crypto Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases of property, plant and equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) investing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfWarrantsToFinancialAdvisorInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of warrants to financial advisor in connection with the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfWarrantsToFinancialAdvisorInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Issuance of Warrants to Financial Advisor in Connection with the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodValueIssuanceOfWarrantsToFinancialAdvisorInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of issuance of warrants to financial advisor in connection with the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodSharesIssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of induced common shares to related party in connection with the merger (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodSharesIssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Issuance of Induced Common Shares to Related Party in Connection with the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_StockIssuedDuringPeriodSharesIssuanceOfInducedCommonSharesToRelatedPartyInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of shares of stock issued during period, shares, issuance of induced common shares to related party in connection with the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentInformationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Information [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current assets:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesCPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series C/C-1 Convertible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesCPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series C Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization, Description of Business, Going Concern and Significant Risks and Uncertainties</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Significant Accounting Policies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities and stockholders&#8217; equity (deficit)</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_FairValueMeasurementScheduleKeyInputsIntoTheMonteCarloSimulationModelForTheConvertiblePromissoryNoteAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement - Schedule Key Inputs into the Monte Carlo Simulation Model for the Convertible Promissory Note [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Prepaid expenses and other current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other non-current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Noncurrent Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities and Stockholders&#8217; Equity (Deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">G3 call option asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Call Option Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_CallOptionAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of call option asset.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashExpensesFromSettlementOfLiabilities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Non-cash expenses from settlement of liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashIssuanceOfInducementSharesInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Non-cash issuance of inducement shares in connection with the merger</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashIssuanceOfInducementSharesInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Non-cash issuance of inducement shares in connection with the merger.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashWarrantIssuanceExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Non-cash warrant issuance expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashWarrantIssuanceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-cash Warrant Issuance Expense</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders&#8217; Equity (Deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss per Share Attributable to Common Stockholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosures of non-cash investing and financing information:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash Investing and Financing Items [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease right-of-use assets obtained in exchange for operating lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Right-of-Use Asset Obtained in Exchange for Operating Lease Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accounts Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accrued Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayment on notes and convertible loans payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase (decrease) in cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_MeasurementInputDebtRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_MeasurementInputDebtRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Debt Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfPreferredStockIntoCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of preferred stock into common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfPreferredStockIntoCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of preferred stock into common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_ConversionOfPreferredStockIntoCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Conversion of preferred stock into common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfHCWWarrantsInLieuOfCashPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of HCW warrants in lieu of cash payment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfHCWWarrantsInLieuOfCashPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of HCW warrants in lieu of cash payment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfHCWWarrantsInLieuOfCashPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Issuance of HCW warrants in lieu of cash payment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of cash flow information:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on extinguishment of debt (including related parties amounts of $1,479 for the three and nine months ended September 30, 2026)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on extinguishment of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on Extinguishment of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of loss on extinguishment of debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebtRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on extinguishment of debt, related parties</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebtRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on extinguishment of debt, Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_LossOnExtinguishmentOfDebtRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of loss on extinguishment of debt, related party.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithELOCTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with ELOC transaction costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithELOCTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Shares in Connection with ELOC Transaction Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithELOCTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of issuance of shares in connection with eloc transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithNon-RecourseNoteToEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with non-recourse note to employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithNon-RecourseNoteToEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Shares in Connection with Non-Recourse Note to Employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSharesInConnectionWithNon-RecourseNoteToEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of issuance of shares in connection with non-recourse note to employees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares in connection with the conversion of the PIPE note</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Other</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from operating activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net loss to net cash used in operating activities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoncashExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncash interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoncashExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Noncash Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and contingencies (Note 6)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders&#8217; Equity (Deficit):</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A non-voting convertible preferred stock: $0.0001 par value &#8211; 130,000 shares authorized and 58,832.859 shares issued and outstanding at September 30, 2026; 0 shares issued and outstanding at December 31, 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Value, Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashIssuanceOfWarrantsAssociatedWithELOCCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Non-cash issuance of warrants associated with ELOC costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashIssuanceOfWarrantsAssociatedWithELOCCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-cash issuance of warrants associated with ELOC costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_Non-cashIssuanceOfWarrantsAssociatedWithELOCCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Non-cash issuance of warrants associated with ELOC costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentForAcquisitionCryptoAsset_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Purchases of digital assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentForAcquisitionCryptoAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for Acquisition, Crypto Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NetCashReceivedFromTheReverseRecapitalization_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net cash received from the reverse recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NetCashReceivedFromTheReverseRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net cash received from the reverse recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NetCashReceivedFromTheReverseRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Net cash received from the reverse recapitalization.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PaymentsForFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payments for fractional shares in connection with August Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PaymentsForFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for fractional shares in connection with August Reverse Stock Split</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_PaymentsForFractionalSharesInConnectionWithAugustReverseStockSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Payments for fractional shares in connection with August Reverse Stock Split.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockNewIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncash issuance of common stock in connection with conversion of PIPE notes and promissory notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConversionOfStockNewIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Stock, New Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Non-Voting Convertible Preferred Stock for Settlement of Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Non-Voting Convertible Preferred Stock for Settlement of Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_IssuanceOfSeriesANon-VotingConvertiblePreferredStockForSettlementOfLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the value of issuance of series A non-voting convertible preferred stock for settlement of liabilities .</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashIssuanceOfCommonAndSeriesANon-votingConvertiblePreferredStockInConnectionWithTheG3CallOption_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncash issuance of common and Series A non-voting convertible preferred stock in connection with the G3 Call Option</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashIssuanceOfCommonAndSeriesANon-votingConvertiblePreferredStockInConnectionWithTheG3CallOption_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash issuance of common and Series A non-voting convertible preferred stock in connection with the G3 Call Option</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashIssuanceOfCommonAndSeriesANon-votingConvertiblePreferredStockInConnectionWithTheG3CallOption_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represent the amount of Noncash issuance of common and Series A non-voting convertible preferred stock in connection with the G3 Call Option.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashIssuanceOfSeriesANon-votingConvertiblePreferredStockToSettleLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncash issuance of Series A non-voting convertible preferred stock to settle liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="pfsa_NoncashIssuanceOfSeriesANon-votingConvertiblePreferredStockToSettleLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash issuance of Series A non-voting convertible preferred stock to settle liabilities</link:label>
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