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    <element id="mdex_SeriesFiveTwoMember" name="SeriesFiveTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesFiveThreeMember" name="SeriesFiveThreeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesFiveFourMember" name="SeriesFiveFourMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesSixOneMember" name="SeriesSixOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_OperatingInterestSixMember" name="OperatingInterestSixMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesTwoMember" name="SeriesTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesThreeMember" name="SeriesThreeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesFiveMember" name="SeriesFiveMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesSixMember" name="SeriesSixMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SecuritiesPurchaseAgreementMember" name="SecuritiesPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PreferredSeriesFSharesMember" name="PreferredSeriesFSharesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ConvertibleNoteMember" name="ConvertibleNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_LicenseAgreementMember" name="LicenseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_CZJLicenseIncMember" name="CZJLicenseIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ExchangeAgreementMember" name="ExchangeAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_AgileCapitalFundingLLCMember" name="AgileCapitalFundingLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_LoanFromPrincipalShareholder" name="LoanFromPrincipalShareholder" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeniorSecuredNotesNetOfDiscount" name="SeniorSecuredNotesNetOfDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DisclosurePromissoryNotesAbstract" name="DisclosurePromissoryNotesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PromissoryNotesDisclosureTextBlock" name="PromissoryNotesDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DisclosureConvertibleNotesAbstract" name="DisclosureConvertibleNotesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ConvertibleNotesPayableTextBlock" name="ConvertibleNotesPayableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DisclosureSeniorSecuredNotesAbstract" name="DisclosureSeniorSecuredNotesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeniorSecuredNotesTextBlock" name="SeniorSecuredNotesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeriesAAndCConvertiblePreferredStockPolicyTextBlock" name="SeriesAAndCConvertiblePreferredStockPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_RelatedPartyTransactionsPolicyTextBlock" name="RelatedPartyTransactionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeniorSecuredNotesTableTextBlock" name="SeniorSecuredNotesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_WorkingCapitalDeficit" name="WorkingCapitalDeficit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_AccruedInterestCurrent" name="AccruedInterestCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DebtInstrumentDefaultInterestRate" name="DebtInstrumentDefaultInterestRate" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PrincipalWasOutstanding" name="PrincipalWasOutstanding" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DebtInstrumentMaturityValue" name="DebtInstrumentMaturityValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_AmortizationOfDebtIssuanceCosts" name="AmortizationOfDebtIssuanceCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DebtInstrumentInterestRate" name="DebtInstrumentInterestRate" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_InterestAnnualRate" name="InterestAnnualRate" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DebtInstrumentUnpaidPrincipalDefaultInterestRate" name="DebtInstrumentUnpaidPrincipalDefaultInterestRate" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_StatementLineItemAxis" name="StatementLineItemAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="mdex_StatementLineItemDomain" name="StatementLineItemDomain" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_FairValuePricePerShare" name="FairValuePricePerShare" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_FaceValueOfSeniorSecuredNotesIssued" name="FaceValueOfSeniorSecuredNotesIssued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DebtInstrumentsUnamortizedDiscount" name="DebtInstrumentsUnamortizedDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_Day1ValueOfSeniorSecuredNotesIssued" name="Day1ValueOfSeniorSecuredNotesIssued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SeniorSecuredNotesNetOfDiscounts" name="SeniorSecuredNotesNetOfDiscounts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PartialSettlementOfPrincipal" name="PartialSettlementOfPrincipal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_DisposalGroupIncludingDiscontinuedOperationNetAssets" name="DisposalGroupIncludingDiscontinuedOperationNetAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_InterestPayableOnSeniorSecuredNotes" name="InterestPayableOnSeniorSecuredNotes" nillable="true" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsIssuedWeightedAverageRemainingExcerisableContractualTerm2" name="SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsIssuedWeightedAverageRemainingExcerisableContractualTerm2" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedGrantDateFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsIssuedWeightedAverageRemainingExcerisableContractualEndTerm2" name="SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsIssuedWeightedAverageRemainingExcerisableContractualEndTerm2" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PreferredStockSharesDesignated" name="PreferredStockSharesDesignated" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_CommonStockOutstandingExceed" name="CommonStockOutstandingExceed" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_AdjustedConversionRatioBaseShares" name="AdjustedConversionRatioBaseShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ExercisePricePerShare" name="ExercisePricePerShare" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_LossOnChangeInTheFairValueOfDerivativeLiabilities" name="LossOnChangeInTheFairValueOfDerivativeLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_PreferredStockIssuedAndOutstanding" name="PreferredStockIssuedAndOutstanding" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ConversionOfPreferredStock" name="ConversionOfPreferredStock" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_TemporaryEquitySharesAuthorized1" name="TemporaryEquitySharesAuthorized1" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ProceedsFromIssuancesOfDebt" name="ProceedsFromIssuancesOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_ShorttermDebtAverageOutstandingAmounts" name="ShorttermDebtAverageOutstandingAmounts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="mdex_StockOptionExercisePrice" name="StockOptionExercisePrice" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
</schema>
