<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByIndustrySector" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByIndustrySector" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByGeographicRegion" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByGeographicRegion" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByCreditQuality" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByCreditQuality" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByMaturity" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByMaturity" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByAssetCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByAssetCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByOtherCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingsByOtherCategory2" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory2" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldings" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldings" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ProspectusOnly" roleURI="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#CoregistrantOnly" roleURI="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#PerformanceMeasureOnly" roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingAssetCategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#BroadBasedIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#IndustrySectorOnly" roleURI="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#GeographicRegionOnly" roleURI="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#CreditQualityOnly" roleURI="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#MaturityOnly" roleURI="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other2CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SalesLoadOnly" roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#HoldingMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ValueMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember" xlink:label="loc_oefAllRisksMember" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_UnderlyingSecurityRisksMember" xlink:label="loc_yspcUnderlyingSecurityRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcUnderlyingSecurityRisksMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_IndirectInvestmentInSpcxRiskMember" xlink:label="loc_yspcIndirectInvestmentInSpcxRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcIndirectInvestmentInSpcxRiskMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_SpcxTradingRiskMember" xlink:label="loc_yspcSpcxTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcSpcxTradingRiskMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_SpcxPerformanceRiskMember" xlink:label="loc_yspcSpcxPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcSpcxPerformanceRiskMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_NewlyPublicCompanyAndStockVolatilityRisksMember" xlink:label="loc_yspcNewlyPublicCompanyAndStockVolatilityRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcNewlyPublicCompanyAndStockVolatilityRisksMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CommercialSpaceIndustryRisksMember" xlink:label="loc_yspcCommercialSpaceIndustryRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCommercialSpaceIndustryRisksMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_SatelliteCommunicationsIndustryRisksMember" xlink:label="loc_yspcSatelliteCommunicationsIndustryRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcSatelliteCommunicationsIndustryRisksMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_IndustryConcentrationRiskMember" xlink:label="loc_yspcIndustryConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcIndustryConcentrationRiskMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_BusinessAndOperationalRisksMember" xlink:label="loc_yspcBusinessAndOperationalRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcBusinessAndOperationalRisksMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_RegulatoryAndLegalRisksMember" xlink:label="loc_yspcRegulatoryAndLegalRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcRegulatoryAndLegalRisksMember" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CustomerAndSupplierConcentrationRisksMember" xlink:label="loc_yspcCustomerAndSupplierConcentrationRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCustomerAndSupplierConcentrationRisksMember" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_ElonMusksInfluenceOnSpacexRiskMember" xlink:label="loc_yspcElonMusksInfluenceOnSpacexRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcElonMusksInfluenceOnSpacexRiskMember" xlink:type="arc" order="110" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_DerivativesRiskMember" xlink:label="loc_yspcDerivativesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcDerivativesRiskMember" xlink:type="arc" order="120" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_OptionsContractsMember" xlink:label="loc_yspcOptionsContractsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcOptionsContractsMember" xlink:type="arc" order="130" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CounterpartyRiskMember" xlink:label="loc_yspcCounterpartyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCounterpartyRiskMember" xlink:type="arc" order="140" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_PriceParticipationRiskMember" xlink:label="loc_yspcPriceParticipationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcPriceParticipationRiskMember" xlink:type="arc" order="150" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_DistributionRiskMember" xlink:label="loc_yspcDistributionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcDistributionRiskMember" xlink:type="arc" order="160" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_NavErosionRiskDueToDistributionsMember" xlink:label="loc_yspcNavErosionRiskDueToDistributionsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcNavErosionRiskDueToDistributionsMember" xlink:type="arc" order="170" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CallStrategyRisksMember" xlink:label="loc_yspcCallStrategyRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCallStrategyRisksMember" xlink:type="arc" order="180" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_EtfRisksMember" xlink:label="loc_yspcEtfRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcEtfRisksMember" xlink:type="arc" order="190" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_AuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:label="loc_yspcAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:type="arc" order="200" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CashRedemptionRiskMember" xlink:label="loc_yspcCashRedemptionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCashRedemptionRiskMember" xlink:type="arc" order="210" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_CostsOfBuyingOrSellingSharesMember" xlink:label="loc_yspcCostsOfBuyingOrSellingSharesMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcCostsOfBuyingOrSellingSharesMember" xlink:type="arc" order="220" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_ManagementRiskMember" xlink:label="loc_yspcManagementRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcManagementRiskMember" xlink:type="arc" order="230" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_SharesMayTradeAtPricesOtherThanNavMember" xlink:label="loc_yspcSharesMayTradeAtPricesOtherThanNavMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcSharesMayTradeAtPricesOtherThanNavMember" xlink:type="arc" order="240" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_TradingMember" xlink:label="loc_yspcTradingMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcTradingMember" xlink:type="arc" order="250" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_EconomicAndMarketRiskMember" xlink:label="loc_yspcEconomicAndMarketRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcEconomicAndMarketRiskMember" xlink:type="arc" order="260" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_HighPortfolioTurnoverRiskMember" xlink:label="loc_yspcHighPortfolioTurnoverRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcHighPortfolioTurnoverRiskMember" xlink:type="arc" order="270" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_InflationRiskMember" xlink:label="loc_yspcInflationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcInflationRiskMember" xlink:type="arc" order="280" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_LiquidityRiskMember" xlink:label="loc_yspcLiquidityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcLiquidityRiskMember" xlink:type="arc" order="290" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_MoneyMarketInstrumentRiskMember" xlink:label="loc_yspcMoneyMarketInstrumentRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcMoneyMarketInstrumentRiskMember" xlink:type="arc" order="300" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_OperationalRiskMember" xlink:label="loc_yspcOperationalRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcOperationalRiskMember" xlink:type="arc" order="310" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_SingleIssuerRiskMember" xlink:label="loc_yspcSingleIssuerRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcSingleIssuerRiskMember" xlink:type="arc" order="320" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_TaxRiskMember" xlink:label="loc_yspcTaxRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcTaxRiskMember" xlink:type="arc" order="330" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_USGovernmentAndUSAgencyObligationsRiskMember" xlink:label="loc_yspcUSGovernmentAndUSAgencyObligationsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_yspcUSGovernmentAndUSAgencyObligationsRiskMember" xlink:type="arc" order="340" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="loc_deiEntityDomain" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_S000106357Member" xlink:label="loc_yspcS000106357Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_yspcS000106357Member" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="loc_oefShareClassDomain" />
      <link:loc xlink:type="locator" xlink:href="yspc-20260710.xsd#yspc_C000277211Member" xlink:label="loc_yspcC000277211Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_yspcC000277211Member" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
</link:linkbase>
