<?xml version='1.0' encoding='utf-8'?>
<!-- Autogenerated -->
<!-- Created by Charles Hoffman, CPA 4/22/2021 11:04:18 AM -->
<!-- Public Domain Dedication: https://creativecommons.org/publicdomain/zero/1.0/ -->
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    <label xlink:type='resource' xlink:label='proof_ChangesInEquityHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Changes in Equity [Hypercube]</label>
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    <label xlink:type='resource' xlink:label='proof_ChangesInEquityLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Changes in Equity [Line Items]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ChangesInEquityRollForward' xlink:label='proof_ChangesInEquityRollForward' />
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    <label xlink:type='resource' xlink:label='proof_ChangesInEquityRollForward_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Changes in Equity [Roll Forward]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ComprehensiveIncome' xlink:label='proof_ComprehensiveIncome' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ComprehensiveIncomeStatementHypercube' xlink:label='proof_ComprehensiveIncomeStatementHypercube' />
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    <label xlink:type='resource' xlink:label='proof_ComprehensiveIncomeStatementHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Comprehensive Income Statement [Hypercube]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ComprehensiveIncomeStatementLineItems' xlink:label='proof_ComprehensiveIncomeStatementLineItems' />
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    <label xlink:type='resource' xlink:label='proof_ComprehensiveIncomeStatementLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Comprehensive Income Statement [Line Items]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CurrentAssets' xlink:label='proof_CurrentAssets' />
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    <label xlink:type='resource' xlink:label='proof_CurrentAssets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Current Assets</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CurrentLiabilities' xlink:label='proof_CurrentLiabilities' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_DistributionsToOwners' xlink:label='proof_DistributionsToOwners' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
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    <label xlink:type='resource' xlink:label='proof_Equity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Equity</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_EquityAttributableToControllingInterests' xlink:label='proof_EquityAttributableToControllingInterests' />
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    <label xlink:type='resource' xlink:label='proof_EquityAttributableToControllingInterests_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Equity Attributable To Controlling Interests</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_EquityAttributableToNoncontrollingInterests' xlink:label='proof_EquityAttributableToNoncontrollingInterests' />
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    <label xlink:type='resource' xlink:label='proof_EquityAttributableToNoncontrollingInterests_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Equity Attributable to Noncontrolling Interests</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_EquityRollUp' xlink:label='proof_EquityRollUp' />
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    <label xlink:type='resource' xlink:label='proof_EquityRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Equity [Roll Up]</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Expenses' xlink:label='proof_Expenses' />
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    <label xlink:type='resource' xlink:label='proof_Expenses_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Expenses</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_FinancialHighlightsHypercube' xlink:label='proof_FinancialHighlightsHypercube' />
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    <label xlink:type='resource' xlink:label='proof_FinancialHighlightsHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Financial Highlights [Hypercube]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_FinancialHighlightsLineItems' xlink:label='proof_FinancialHighlightsLineItems' />
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    <label xlink:type='resource' xlink:label='proof_FinancialHighlightsLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Financial Highlights [Line Items]</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_FinancialHighlightsSet' xlink:label='proof_FinancialHighlightsSet' />
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    <label xlink:type='resource' xlink:label='proof_FinancialHighlightsSet_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Financial Highlights [Set]</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Forfeited' xlink:label='proof_Forfeited' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Forfeited' xlink:to='proof_Forfeited_lbl' />
    <label xlink:type='resource' xlink:label='proof_Forfeited_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Forfeited</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Gains' xlink:label='proof_Gains' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Gains' xlink:to='proof_Gains_lbl' />
    <label xlink:type='resource' xlink:label='proof_Gains_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Gains</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Granted' xlink:label='proof_Granted' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Granted' xlink:to='proof_Granted_lbl' />
    <label xlink:type='resource' xlink:label='proof_Granted_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Granted</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_IncomeFromNormalActivitiesOfEntity' xlink:label='proof_IncomeFromNormalActivitiesOfEntity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_IncomeFromNormalActivitiesOfEntity' xlink:to='proof_IncomeFromNormalActivitiesOfEntity_lbl' />
    <label xlink:type='resource' xlink:label='proof_IncomeFromNormalActivitiesOfEntity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Income from Normal Activities of Entity</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity' xlink:label='proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity' xlink:to='proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity_lbl' />
    <label xlink:type='resource' xlink:label='proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Income from Peripheral or Incidental Transactions of Entity</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_InvestmentsByOwners' xlink:label='proof_InvestmentsByOwners' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_InvestmentsByOwners' xlink:to='proof_InvestmentsByOwners_lbl' />
    <label xlink:type='resource' xlink:label='proof_InvestmentsByOwners_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Investments by Owners</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Liabilities' xlink:label='proof_Liabilities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Liabilities' xlink:to='proof_Liabilities_lbl' />
    <label xlink:type='resource' xlink:label='proof_Liabilities_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Liabilities</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_LiabilitiesAndEquity' xlink:label='proof_LiabilitiesAndEquity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_LiabilitiesAndEquity' xlink:to='proof_LiabilitiesAndEquity_lbl' />
    <label xlink:type='resource' xlink:label='proof_LiabilitiesAndEquity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Liabilities and Equity</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_LiabilitiesAndEquityRollUp' xlink:label='proof_LiabilitiesAndEquityRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_LiabilitiesAndEquityRollUp' xlink:to='proof_LiabilitiesAndEquityRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_LiabilitiesAndEquityRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Liabilities and Equity [Roll Up]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_LiabilitiesRollUp' xlink:label='proof_LiabilitiesRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_LiabilitiesRollUp' xlink:to='proof_LiabilitiesRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_LiabilitiesRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Liabilities [Roll Up]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Losses' xlink:label='proof_Losses' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Losses' xlink:to='proof_Losses_lbl' />
    <label xlink:type='resource' xlink:label='proof_Losses_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Losses</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NatureOfOperationsTextBlock' xlink:label='proof_NatureOfOperationsTextBlock' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NatureOfOperationsTextBlock' xlink:to='proof_NatureOfOperationsTextBlock_lbl' />
    <label xlink:type='resource' xlink:label='proof_NatureOfOperationsTextBlock_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Nature of Operations [Text Block]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetAssets' xlink:label='proof_NetAssets' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetAssets' xlink:to='proof_NetAssets_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetAssets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Assets</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetAssetsHypercube' xlink:label='proof_NetAssetsHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetAssetsHypercube' xlink:to='proof_NetAssetsHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetAssetsHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Assets [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetAssetsLineItems' xlink:label='proof_NetAssetsLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetAssetsLineItems' xlink:to='proof_NetAssetsLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetAssetsLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Assets [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetAssetsRollUp' xlink:label='proof_NetAssetsRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetAssetsRollUp' xlink:to='proof_NetAssetsRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetAssetsRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Assets [Roll Up]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlow' xlink:label='proof_NetCashFlow' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetCashFlow' xlink:to='proof_NetCashFlow_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetCashFlow_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Cash Flow</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlowFinancingActivities' xlink:label='proof_NetCashFlowFinancingActivities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetCashFlowFinancingActivities' xlink:to='proof_NetCashFlowFinancingActivities_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetCashFlowFinancingActivities_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Cash Flow Financing Activities</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlowInvestingActivities' xlink:label='proof_NetCashFlowInvestingActivities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetCashFlowInvestingActivities' xlink:to='proof_NetCashFlowInvestingActivities_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetCashFlowInvestingActivities_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Cash Flow Investing Activities</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlowOperatingActivities' xlink:label='proof_NetCashFlowOperatingActivities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetCashFlowOperatingActivities' xlink:to='proof_NetCashFlowOperatingActivities_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetCashFlowOperatingActivities_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Cash Flow Operating Activities</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlowRollUp' xlink:label='proof_NetCashFlowRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetCashFlowRollUp' xlink:to='proof_NetCashFlowRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetCashFlowRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Cash Flow [Roll Up]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetIncome' xlink:label='proof_NetIncome' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetIncome' xlink:to='proof_NetIncome_lbl' />
    <label xlink:type='resource' xlink:label='proof_NetIncome_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Net Income</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NoncurrentAssets' xlink:label='proof_NoncurrentAssets' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NoncurrentAssets' xlink:to='proof_NoncurrentAssets_lbl' />
    <label xlink:type='resource' xlink:label='proof_NoncurrentAssets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Noncurrent Assets</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NoncurrentLiabilities' xlink:label='proof_NoncurrentLiabilities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NoncurrentLiabilities' xlink:to='proof_NoncurrentLiabilities_lbl' />
    <label xlink:type='resource' xlink:label='proof_NoncurrentLiabilities_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Noncurrent Liabilities</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NonvestedFairValue' xlink:label='proof_NonvestedFairValue' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NonvestedFairValue' xlink:to='proof_NonvestedFairValue_lbl' />
    <label xlink:type='resource' xlink:label='proof_NonvestedFairValue_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Nonvested Fair Value</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_OtherComprehensiveIncome' xlink:label='proof_OtherComprehensiveIncome' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_OtherComprehensiveIncome' xlink:to='proof_OtherComprehensiveIncome_lbl' />
    <label xlink:type='resource' xlink:label='proof_OtherComprehensiveIncome_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Other Comprehensive Income</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PoliciesHypercube' xlink:label='proof_PoliciesHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PoliciesHypercube' xlink:to='proof_PoliciesHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_PoliciesHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Policies [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PoliciesLineItems' xlink:label='proof_PoliciesLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PoliciesLineItems' xlink:to='proof_PoliciesLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_PoliciesLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Policies [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PreviouslyStatedMember' xlink:label='proof_PreviouslyStatedMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PreviouslyStatedMember' xlink:to='proof_PreviouslyStatedMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_PreviouslyStatedMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Previously Stated [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PriorPeriodErrorsAdjustment' xlink:label='proof_PriorPeriodErrorsAdjustment' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PriorPeriodErrorsAdjustment' xlink:to='proof_PriorPeriodErrorsAdjustment_lbl' />
    <label xlink:type='resource' xlink:label='proof_PriorPeriodErrorsAdjustment_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Prior Period Errors [Adjustment]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PriorPeriodErrorsHypercube' xlink:label='proof_PriorPeriodErrorsHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PriorPeriodErrorsHypercube' xlink:to='proof_PriorPeriodErrorsHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_PriorPeriodErrorsHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Prior Period Errors [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PriorPeriodErrorsLineItems' xlink:label='proof_PriorPeriodErrorsLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PriorPeriodErrorsLineItems' xlink:to='proof_PriorPeriodErrorsLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_PriorPeriodErrorsLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Prior Period Errors [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_PriorReportMember' xlink:label='proof_PriorReportMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_PriorReportMember' xlink:to='proof_PriorReportMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_PriorReportMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Prior Report [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ReportDateAxis' xlink:label='proof_ReportDateAxis' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ReportDateAxis' xlink:to='proof_ReportDateAxis_lbl' />
    <label xlink:type='resource' xlink:label='proof_ReportDateAxis_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Report Date [Axis]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_RestatedMember' xlink:label='proof_RestatedMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_RestatedMember' xlink:to='proof_RestatedMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_RestatedMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Restated [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_RestatementAxis' xlink:label='proof_RestatementAxis' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_RestatementAxis' xlink:to='proof_RestatementAxis_lbl' />
    <label xlink:type='resource' xlink:label='proof_RestatementAxis_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Restatement [Axis]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_RevenueRecognitionPolicyTextBlock' xlink:label='proof_RevenueRecognitionPolicyTextBlock' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_RevenueRecognitionPolicyTextBlock' xlink:to='proof_RevenueRecognitionPolicyTextBlock_lbl' />
    <label xlink:type='resource' xlink:label='proof_RevenueRecognitionPolicyTextBlock_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Revenue Recognition Policy [Text Block]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Revenues' xlink:label='proof_Revenues' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Revenues' xlink:to='proof_Revenues_lbl' />
    <label xlink:type='resource' xlink:label='proof_Revenues_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Revenues</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ScenarioAxis' xlink:label='proof_ScenarioAxis' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ScenarioAxis' xlink:to='proof_ScenarioAxis_lbl' />
    <label xlink:type='resource' xlink:label='proof_ScenarioAxis_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Scenario [Axis]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentAlphaMember' xlink:label='proof_SegmentAlphaMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentAlphaMember' xlink:to='proof_SegmentAlphaMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentAlphaMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Alpha [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentBravoMember' xlink:label='proof_SegmentBravoMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentBravoMember' xlink:to='proof_SegmentBravoMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentBravoMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Bravo [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentCharlieMember' xlink:label='proof_SegmentCharlieMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentCharlieMember' xlink:to='proof_SegmentCharlieMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentCharlieMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Charlie [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentRevenuesHypercube' xlink:label='proof_SegmentRevenuesHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentRevenuesHypercube' xlink:to='proof_SegmentRevenuesHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentRevenuesHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Revenues [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentRevenuesLineItems' xlink:label='proof_SegmentRevenuesLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentRevenuesLineItems' xlink:to='proof_SegmentRevenuesLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentRevenuesLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Revenues [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentRevenuesSet' xlink:label='proof_SegmentRevenuesSet' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentRevenuesSet' xlink:to='proof_SegmentRevenuesSet_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentRevenuesSet_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segment Revenues [Set]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_SegmentsAxis' xlink:label='proof_SegmentsAxis' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_SegmentsAxis' xlink:to='proof_SegmentsAxis_lbl' />
    <label xlink:type='resource' xlink:label='proof_SegmentsAxis_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Segments [Axis]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_VarianceAnalysisHypercube' xlink:label='proof_VarianceAnalysisHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_VarianceAnalysisHypercube' xlink:to='proof_VarianceAnalysisHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_VarianceAnalysisHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Variance Analysis [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_VarianceAnalysisLineItems' xlink:label='proof_VarianceAnalysisLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_VarianceAnalysisLineItems' xlink:to='proof_VarianceAnalysisLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_VarianceAnalysisLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Variance Analysis  [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_VarianceAnalysisRollUp' xlink:label='proof_VarianceAnalysisRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_VarianceAnalysisRollUp' xlink:to='proof_VarianceAnalysisRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_VarianceAnalysisRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Variance Analysis  [Roll Up]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_VarianceMember' xlink:label='proof_VarianceMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_VarianceMember' xlink:to='proof_VarianceMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_VarianceMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Variance [Member]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Vested' xlink:label='proof_Vested' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Vested' xlink:to='proof_Vested_lbl' />
    <label xlink:type='resource' xlink:label='proof_Vested_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Vested</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_WeightedAverageGrantDateFairValueHypercube' xlink:label='proof_WeightedAverageGrantDateFairValueHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_WeightedAverageGrantDateFairValueHypercube' xlink:to='proof_WeightedAverageGrantDateFairValueHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_WeightedAverageGrantDateFairValueHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Weighted Average Grant Date Fair Value [Hypercube]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_WeightedAverageGrantDateFairValueLineItems' xlink:label='proof_WeightedAverageGrantDateFairValueLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_WeightedAverageGrantDateFairValueLineItems' xlink:to='proof_WeightedAverageGrantDateFairValueLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_WeightedAverageGrantDateFairValueLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Weighted Average Grant Date Fair Value [Line Items]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_WeightedAverageGrantDateFairValueRollForwardInfo' xlink:label='proof_WeightedAverageGrantDateFairValueRollForwardInfo' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_WeightedAverageGrantDateFairValueRollForwardInfo' xlink:to='proof_WeightedAverageGrantDateFairValueRollForwardInfo_lbl' />
    <label xlink:type='resource' xlink:label='proof_WeightedAverageGrantDateFairValueRollForwardInfo_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/label'>Weighted Average Grant Date Fair Value [Roll Forward Info]</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ActualMember' xlink:label='proof_ActualMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ActualMember' xlink:to='proof_ActualMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_ActualMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_AllSegmentsMember' xlink:label='proof_AllSegmentsMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_AllSegmentsMember' xlink:to='proof_AllSegmentsMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_AllSegmentsMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Assets' xlink:label='proof_Assets' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Assets' xlink:to='proof_Assets_lbl' />
    <label xlink:type='resource' xlink:label='proof_Assets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Assets are probable future economic beneits obtained or controlled by a particular entity as a result of past transactions or events.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Assets' xlink:label='proof_Assets' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Assets' xlink:to='proof_Assets_lbl' />
    <label xlink:type='resource' xlink:label='proof_Assets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodStartLabel'>Assets, Beginning Balance</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Assets' xlink:label='proof_Assets' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Assets' xlink:to='proof_Assets_lbl' />
    <label xlink:type='resource' xlink:label='proof_Assets_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodEndLabel'>Assets, Ending Balance</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_AssetsRollForward' xlink:label='proof_AssetsRollForward' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_AssetsRollForward' xlink:to='proof_AssetsRollForward_lbl' />
    <label xlink:type='resource' xlink:label='proof_AssetsRollForward_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_AssetsRollUp' xlink:label='proof_AssetsRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_AssetsRollUp' xlink:to='proof_AssetsRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_AssetsRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_BalanceSheetHypercube' xlink:label='proof_BalanceSheetHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_BalanceSheetHypercube' xlink:to='proof_BalanceSheetHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_BalanceSheetHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_BalanceSheetLineItems' xlink:label='proof_BalanceSheetLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_BalanceSheetLineItems' xlink:to='proof_BalanceSheetLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_BalanceSheetLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_BalanceSheetSet' xlink:label='proof_BalanceSheetSet' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_BalanceSheetSet' xlink:to='proof_BalanceSheetSet_lbl' />
    <label xlink:type='resource' xlink:label='proof_BalanceSheetSet_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_BasisOfReportingTextBlock' xlink:label='proof_BasisOfReportingTextBlock' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_BasisOfReportingTextBlock' xlink:to='proof_BasisOfReportingTextBlock_lbl' />
    <label xlink:type='resource' xlink:label='proof_BasisOfReportingTextBlock_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_BudgetedMember' xlink:label='proof_BudgetedMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_BudgetedMember' xlink:to='proof_BudgetedMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_BudgetedMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CashFlowHypercube' xlink:label='proof_CashFlowHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_CashFlowHypercube' xlink:to='proof_CashFlowHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_CashFlowHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CashFlowLineItems' xlink:label='proof_CashFlowLineItems' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_CashFlowLineItems' xlink:to='proof_CashFlowLineItems_lbl' />
    <label xlink:type='resource' xlink:label='proof_CashFlowLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ChangesInAccountingPolicy' xlink:label='proof_ChangesInAccountingPolicy' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ChangesInAccountingPolicy' xlink:to='proof_ChangesInAccountingPolicy_lbl' />
    <label xlink:type='resource' xlink:label='proof_ChangesInAccountingPolicy_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ChangesInAccountingPolicyMember' xlink:label='proof_ChangesInAccountingPolicyMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ChangesInAccountingPolicyMember' xlink:to='proof_ChangesInAccountingPolicyMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_ChangesInAccountingPolicyMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ChangesInEquityHypercube' xlink:label='proof_ChangesInEquityHypercube' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_ChangesInEquityHypercube' xlink:to='proof_ChangesInEquityHypercube_lbl' />
    <label xlink:type='resource' xlink:label='proof_ChangesInEquityHypercube_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ChangesInEquityLineItems' xlink:label='proof_ChangesInEquityLineItems' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_ComprehensiveIncome' xlink:label='proof_ComprehensiveIncome' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CurrentLiabilities' xlink:label='proof_CurrentLiabilities' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_CurrentReportMember' xlink:label='proof_CurrentReportMember' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_CurrentReportMember' xlink:to='proof_CurrentReportMember_lbl' />
    <label xlink:type='resource' xlink:label='proof_CurrentReportMember_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_DistributionsToOwners' xlink:label='proof_DistributionsToOwners' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_DistributionsToOwners' xlink:to='proof_DistributionsToOwners_lbl' />
    <label xlink:type='resource' xlink:label='proof_DistributionsToOwners_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Distributions to owners are decreases in equity of a particular business enterprise resulting from transferring assets, rendering services, or incurring liabilities by the enterprise to owners. Distributions to owners decrease ownership interest (or equit</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_DistributionsToOwners' xlink:label='proof_DistributionsToOwners' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_DistributionsToOwners' xlink:to='proof_DistributionsToOwners_lbl' />
    <label xlink:type='resource' xlink:label='proof_DistributionsToOwners_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2009/role/negatedLabel'>(Distributions to Owners)</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Equity' xlink:to='proof_Equity_lbl' />
    <label xlink:type='resource' xlink:label='proof_Equity_lbl' xml:lang='en' xlink:role='http://accounting.auditchain.finance/conceptual-model/cm-roles/roles/originallyStatedLabel'>Equity, Origionally Stated</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Equity' xlink:to='proof_Equity_lbl' />
    <label xlink:type='resource' xlink:label='proof_Equity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2006/role/restatedLabel'>Equity, Restated</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Equity' xlink:to='proof_Equity_lbl' />
    <label xlink:type='resource' xlink:label='proof_Equity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodEndLabel'>Equity, Ending Balance</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Equity' xlink:to='proof_Equity_lbl' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Equity' xlink:label='proof_Equity' />
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    <label xlink:type='resource' xlink:label='proof_Equity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodStartLabel'>Equity, Beginning Balance</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_EquityAttributableToNoncontrollingInterests' xlink:label='proof_EquityAttributableToNoncontrollingInterests' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_EquityRollUp' xlink:label='proof_EquityRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_EquityRollUp' xlink:to='proof_EquityRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_EquityRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Expenses' xlink:label='proof_Expenses' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Expenses' xlink:to='proof_Expenses_lbl' />
    <label xlink:type='resource' xlink:label='proof_Expenses_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2009/role/negatedLabel'>(Expenses)</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Expenses' xlink:label='proof_Expenses' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Expenses' xlink:to='proof_Expenses_lbl' />
    <label xlink:type='resource' xlink:label='proof_Expenses_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Expenses are outflows or other using up of assets or incurrences of liabilities (or a combination of both) from delivering or producing goods, rendering services, or carrying out other activities that constitute the entity&quot;s ongoing major or central opera</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_FinancialHighlightsLineItems' xlink:label='proof_FinancialHighlightsLineItems' />
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    <label xlink:type='resource' xlink:label='proof_FinancialHighlightsLineItems_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_FinancialHighlightsSet' xlink:label='proof_FinancialHighlightsSet' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Forfeited' xlink:label='proof_Forfeited' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Forfeited' xlink:to='proof_Forfeited_lbl' />
    <label xlink:type='resource' xlink:label='proof_Forfeited_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Gains' xlink:label='proof_Gains' />
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    <label xlink:type='resource' xlink:label='proof_Gains_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Gains are increases in equity (net assets) from peripheral or incidental transactions of an entity and from all other transactions and other events and circumstances affecting the entity except those that result from revenues or investments by owners.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Granted' xlink:label='proof_Granted' />
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    <label xlink:type='resource' xlink:label='proof_IncomeFromNormalActivitiesOfEntity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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    <label xlink:type='resource' xlink:label='proof_IncomeFromPeripheralOrIncidentalTransactionsOfEntity_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Liabilities' xlink:label='proof_Liabilities' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Liabilities' xlink:label='proof_Liabilities' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Liabilities' xlink:to='proof_Liabilities_lbl' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_LiabilitiesAndEquityRollUp' xlink:label='proof_LiabilitiesAndEquityRollUp' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_LiabilitiesAndEquityRollUp' xlink:to='proof_LiabilitiesAndEquityRollUp_lbl' />
    <label xlink:type='resource' xlink:label='proof_LiabilitiesAndEquityRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat. Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_LiabilitiesRollUp' xlink:label='proof_LiabilitiesRollUp' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Losses' xlink:label='proof_Losses' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Losses' xlink:to='proof_Losses_lbl' />
    <label xlink:type='resource' xlink:label='proof_Losses_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2009/role/negatedLabel'>(Losses)</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_Losses' xlink:label='proof_Losses' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_Losses' xlink:to='proof_Losses_lbl' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlow' xlink:label='proof_NetCashFlow' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetCashFlowRollUp' xlink:label='proof_NetCashFlowRollUp' />
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    <label xlink:type='resource' xlink:label='proof_NetCashFlowRollUp_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/documentation'>Suspendisse urna. Proin non mauris. Proin sed odio. Phasellus sagittis orci quis orci. Duis sapien diam, dapibus sed, dictum quis, interdum ac, erat.</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NetIncome' xlink:label='proof_NetIncome' />
    <labelArc xlink:type='arc' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='proof_NetIncome' xlink:to='proof_NetIncome_lbl' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NoncurrentAssets' xlink:label='proof_NoncurrentAssets' />
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NoncurrentLiabilities' xlink:label='proof_NoncurrentLiabilities' />
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  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NonvestedFairValue' xlink:label='proof_NonvestedFairValue' />
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    <label xlink:type='resource' xlink:label='proof_NonvestedFairValue_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodStartLabel'>Nonvested Fair Value, Beginning Balance</label>
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    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NonvestedFairValue' xlink:label='proof_NonvestedFairValue' />
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  </labelLink>
 
  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_NonvestedFairValue' xlink:label='proof_NonvestedFairValue' />
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    <label xlink:type='resource' xlink:label='proof_NonvestedFairValue_lbl' xml:lang='en' xlink:role='http://www.xbrl.org/2003/role/periodEndLabel'>Nonvested Fair Value, Ending Balance</label>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
    <loc xlink:type='locator' xlink:href='proof.xsd#proof_OtherComprehensiveIncome' xlink:label='proof_OtherComprehensiveIncome' />
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
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  <labelLink xlink:type='extended' xlink:role='http://www.xbrl.org/2003/role/link'>
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