<?xml version="1.0" encoding="ASCII"?>
<!-- XBRL document created with Praxa -->
<!-- Copyright (c) 2026 Praxa LLC. All Rights Reserved.-->
<!-- Creation Date: 2026-09-25T18:25:35.7697+00:00 -->
<xs:schema targetNamespace="http://cid.com/20260630" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:daic="http://cid.com/20260630" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:srt="http://fasb.org/srt/2026" xmlns:dtr="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:ecd-sub="http://xbrl.sec.gov/ecd-sub/2026">
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
  <xs:import namespace="http://xbrl.org/2020/extensible-enumerations-2.0" schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/ecd-sub/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-sub-2026.xsd" />
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="daic-20260630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="daic-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="daic-20260630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition link" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="daic-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation link" xlink:type="simple" />
      <link:roleType roleURI="http://cid.com/20260630/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>995300 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CondensedConsolidatedBalanceSheetsUnaudited" id="CondensedConsolidatedBalanceSheetsUnaudited">
        <link:definition>995301 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CondensedConsolidatedBalanceSheetsUnauditedParentheticals" id="CondensedConsolidatedBalanceSheetsUnauditedParentheticals">
        <link:definition>995302 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CondensedConsolidatedStatementsofOperationsUnaudited" id="CondensedConsolidatedStatementsofOperationsUnaudited">
        <link:definition>995303 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CondensedConsolidatedStatementsofShareholdersEquityDeficitUnaudited" id="CondensedConsolidatedStatementsofShareholdersEquityDeficitUnaudited">
        <link:definition>995304 - Statement - Condensed Consolidated Statements of Shareholders&#8217; Equity Deficit (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" id="CondensedConsolidatedStatementsofCashFlowsUnaudited">
        <link:definition>995305 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CompanyInformation" id="CompanyInformation">
        <link:definition>995306 - Disclosure - Company Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SummaryofSignificantAccountingPolicies" id="SummaryofSignificantAccountingPolicies">
        <link:definition>995307 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ReverseStockSplit" id="ReverseStockSplit">
        <link:definition>995308 - Disclosure - Reverse Stock Split</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalization" id="BusinessCombinationandReverseRecapitalization">
        <link:definition>995309 - Disclosure - Business Combination and Reverse Recapitalization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ReclassificationsandRevisionsofPriorPeriodFinancialStatements" id="ReclassificationsandRevisionsofPriorPeriodFinancialStatements">
        <link:definition>995310 - Disclosure - Reclassifications and Revisions of Prior Period Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/Concentrations" id="Concentrations">
        <link:definition>995311 - Disclosure - Concentrations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/PropertyandEquipment" id="PropertyandEquipment">
        <link:definition>995312 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CapitalizedSoftwareDevelopmentCosts" id="CapitalizedSoftwareDevelopmentCosts">
        <link:definition>995313 - Disclosure - Capitalized Software Development Costs</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LoansandFairValueMeasurements" id="LoansandFairValueMeasurements">
        <link:definition>995314 - Disclosure - Loans and Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityLineofCreditELOC" id="EquityLineofCreditELOC">
        <link:definition>995315 - Disclosure - Equity Line of Credit (&#8220;ELOC&#8221;)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ShareholdersEquity" id="ShareholdersEquity">
        <link:definition>995316 - Disclosure - Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityIncentivePlan" id="EquityIncentivePlan">
        <link:definition>995317 - Disclosure - Equity Incentive Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/NetLossEarningsPerShare" id="NetLossEarningsPerShare">
        <link:definition>995318 - Disclosure - Net (Loss) Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/Leases" id="Leases">
        <link:definition>995319 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/RelatedPartyTransactions" id="RelatedPartyTransactions">
        <link:definition>995320 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/AccruedExpenses" id="AccruedExpenses">
        <link:definition>995321 - Disclosure - Accrued Expenses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/Inventory" id="Inventory">
        <link:definition>995322 - Disclosure - Inventory</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CommitmentandContingencies" id="CommitmentandContingencies">
        <link:definition>995323 - Disclosure - Commitment and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SegmentReporting" id="SegmentReporting">
        <link:definition>995324 - Disclosure - Segment Reporting</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/IncomeTaxes" id="IncomeTaxes">
        <link:definition>995325 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SubsequentEvents" id="SubsequentEvents">
        <link:definition>995326 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SummaryofSignificantAccountingPoliciesPolicies" id="SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>996327 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationTables" id="BusinessCombinationandReverseRecapitalizationTables">
        <link:definition>996328 - Disclosure - Business Combination and Reverse Recapitalization (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/PropertyandEquipmentTables" id="PropertyandEquipmentTables">
        <link:definition>996329 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LoansandFairValueMeasurementsTables" id="LoansandFairValueMeasurementsTables">
        <link:definition>996330 - Disclosure - Loans and Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityIncentivePlanTables" id="EquityIncentivePlanTables">
        <link:definition>996331 - Disclosure - Equity Incentive Plan (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LeasesTables" id="LeasesTables">
        <link:definition>996332 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/AccruedExpensesTables" id="AccruedExpensesTables">
        <link:definition>996333 - Disclosure - Accrued Expenses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/InventoryTables" id="InventoryTables">
        <link:definition>996334 - Disclosure - Inventory (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SegmentReportingTables" id="SegmentReportingTables">
        <link:definition>996335 - Disclosure - Segment Reporting (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CompanyInformationDetails" id="CompanyInformationDetails">
        <link:definition>996336 - Disclosure - Company Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SummaryofSignificantAccountingPoliciesDetails" id="SummaryofSignificantAccountingPoliciesDetails">
        <link:definition>996337 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ReverseStockSplitDetails" id="ReverseStockSplitDetails">
        <link:definition>996338 - Disclosure - Reverse Stock Split (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationDetails" id="BusinessCombinationandReverseRecapitalizationDetails">
        <link:definition>996339 - Disclosure - Business Combination and Reverse Recapitalization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationScheduleofSharesofCommonStockIssuedinConnectionwiththeBusinessCombinationDetails" id="BusinessCombinationandReverseRecapitalizationScheduleofSharesofCommonStockIssuedinConnectionwiththeBusinessCombinationDetails">
        <link:definition>996340 - Disclosure - Business Combination and Reverse Recapitalization - Schedule of Shares of Common Stock Issued in Connection with the Business Combination (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationScheduleofReconcileElementsoftheBusinessCombinationtotheCompanysCondensedConsolidatedFinancialStatementsDetails" id="BusinessCombinationandReverseRecapitalizationScheduleofReconcileElementsoftheBusinessCombinationtotheCompanysCondensedConsolidatedFinancialStatementsDetails">
        <link:definition>996341 - Disclosure - Business Combination and Reverse Recapitalization - Schedule of Reconcile Elements of the Business Combination to the Company&#8217;s Condensed Consolidated Financial Statements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationScheduleofBridgeLoansDetails" id="BusinessCombinationandReverseRecapitalizationScheduleofBridgeLoansDetails">
        <link:definition>996342 - Disclosure - Business Combination and Reverse Recapitalization - Schedule of Bridge Loans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/BusinessCombinationandReverseRecapitalizationScheduleofBusinessCombinationBreakdownofallPIPEInvestmentsDetails" id="BusinessCombinationandReverseRecapitalizationScheduleofBusinessCombinationBreakdownofallPIPEInvestmentsDetails">
        <link:definition>996343 - Disclosure - Business Combination and Reverse Recapitalization - Schedule of Business Combination Breakdown of all PIPE Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ConcentrationsDetails" id="ConcentrationsDetails">
        <link:definition>996344 - Disclosure - Concentrations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/PropertyandEquipmentScheduleofPropertyandEquipmentNetDetails" id="PropertyandEquipmentScheduleofPropertyandEquipmentNetDetails">
        <link:definition>996345 - Disclosure - Property and Equipment - Schedule of Property and Equipment, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/PropertyandEquipmentScheduleofDepreciationExpenseDetails" id="PropertyandEquipmentScheduleofDepreciationExpenseDetails">
        <link:definition>996346 - Disclosure - Property and Equipment - Schedule of Depreciation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CapitalizedSoftwareDevelopmentCostsDetails" id="CapitalizedSoftwareDevelopmentCostsDetails">
        <link:definition>996347 - Disclosure - Capitalized Software Development Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LoansandFairValueMeasurementsDetails" id="LoansandFairValueMeasurementsDetails">
        <link:definition>996348 - Disclosure - Loans and Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LoansandFairValueMeasurementsScheduleofFairValueDetails" id="LoansandFairValueMeasurementsScheduleofFairValueDetails">
        <link:definition>996349 - Disclosure - Loans and Fair Value Measurements - Schedule of Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityLineofCreditELOCDetails" id="EquityLineofCreditELOCDetails">
        <link:definition>996350 - Disclosure - Equity Line of Credit (&#8220;ELOC&#8221;) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/ShareholdersEquityDetails" id="ShareholdersEquityDetails">
        <link:definition>996351 - Disclosure - Shareholders' Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityIncentivePlanDetails" id="EquityIncentivePlanDetails">
        <link:definition>996352 - Disclosure - Equity Incentive Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/EquityIncentivePlanScheduleofStockOptionsDetails" id="EquityIncentivePlanScheduleofStockOptionsDetails">
        <link:definition>996353 - Disclosure - Equity Incentive Plan - Schedule of Stock Options (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/NetLossEarningsPerShareDetails" id="NetLossEarningsPerShareDetails">
        <link:definition>996354 - Disclosure - Net (Loss) Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LeasesDetails" id="LeasesDetails">
        <link:definition>996355 - Disclosure - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LeasesScheduleofComponentsofLeaseExpenseDetails" id="LeasesScheduleofComponentsofLeaseExpenseDetails">
        <link:definition>996356 - Disclosure - Leases - Schedule of Components of Lease Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/LeasesScheduleofFutureMinimumLeaseCommitmentsDetails" id="LeasesScheduleofFutureMinimumLeaseCommitmentsDetails">
        <link:definition>996357 - Disclosure - Leases - Schedule of Future Minimum Lease Commitments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/RelatedPartyTransactionsDetails" id="RelatedPartyTransactionsDetails">
        <link:definition>996358 - Disclosure - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/AccruedExpensesScheduleofAccruedExpensesDetails" id="AccruedExpensesScheduleofAccruedExpensesDetails">
        <link:definition>996359 - Disclosure - Accrued Expenses - Schedule of Accrued Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/InventoryScheduleofInventoryDetails" id="InventoryScheduleofInventoryDetails">
        <link:definition>996360 - Disclosure - Inventory - Schedule of Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/CommitmentandContingenciesDetails" id="CommitmentandContingenciesDetails">
        <link:definition>996361 - Disclosure - Commitment and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SegmentReportingDetails" id="SegmentReportingDetails">
        <link:definition>996362 - Disclosure - Segment Reporting (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SegmentReportingScheduleofGeneratedfromCustomersLocatedintheUnitedStatesDetails" id="SegmentReportingScheduleofGeneratedfromCustomersLocatedintheUnitedStatesDetails">
        <link:definition>996363 - Disclosure - Segment Reporting - Schedule of Generated from Customers Located in the United States (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/IncomeTaxesDetails" id="IncomeTaxesDetails">
        <link:definition>996364 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://cid.com/20260630/role/SubsequentEventsDetails" id="SubsequentEventsDetails">
        <link:definition>996365 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="daic_TwoCustomersMember" name="TwoCustomersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ConcentrationsDetailsTable" name="ConcentrationsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OneCustomerMember" name="OneCustomerMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PropertyandEquipmentScheduleofPropertyandEquipmentNetDetailsTable" name="PropertyandEquipmentScheduleofPropertyandEquipmentNetDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_JJAstorWarrantLiabilityMember" name="JJAstorWarrantLiabilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_WhiteLionWarrantLiabilityMember" name="WhiteLionWarrantLiabilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_JJAstorLoansAndSubsequentAssumptionByLHTIMember" name="JJAstorLoansAndSubsequentAssumptionByLHTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_LoansandFairValueMeasurementsDetailsTable" name="LoansandFairValueMeasurementsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_JJAstorCoMember" name="JJAstorCoMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TrancheAxis" name="TrancheAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TrancheOneMember" name="TrancheOneMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_FairValueCommonStockClosingPerShare" name="FairValueCommonStockClosingPerShare" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ExercisePricePercentage" name="ExercisePricePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_IssuancesUnderTheAgreements" name="IssuancesUnderTheAgreements" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_WhiteLionLoansMember" name="WhiteLionLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_WhiteLionConvertibleNotesMember" name="WhiteLionConvertibleNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PhillipsLoanMember" name="PhillipsLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SharesOfSettlement" name="SharesOfSettlement" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_CommitmentFees" name="CommitmentFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ReverseStockSplitOfCommonShares" name="ReverseStockSplitOfCommonShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ReverseStockSplitPerShare" name="ReverseStockSplitPerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_StockIssuedDuringPeriodEquivalentToShares" name="StockIssuedDuringPeriodEquivalentToShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_NewCircleELOCMember" name="NewCircleELOCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInFairValueOfSAFENotes" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInFairValueOfSAFENotes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_AggregateOfSharesIssued" name="AggregateOfSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_RelatedPartyTransactionsDetailsTable" name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SAFEAgreementsMember" name="SAFEAgreementsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ExecutiveLoansMember" name="ExecutiveLoansMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PopeTechnologiesLLCMember" name="PopeTechnologiesLLCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_CharlesMaddoxMember" name="CharlesMaddoxMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_MonthlyRent" name="MonthlyRent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_AdditionalLoan" name="AdditionalLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_WhiteLionNotesMember" name="WhiteLionNotesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TwoThousandTwentyOneEquityInventivePlanMember" name="TwoThousandTwentyOneEquityInventivePlanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_NetLossPerShareDetailsTable" name="NetLossPerShareDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SubsequentEventsDetailsTable" name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PercentageOfDiscount" name="PercentageOfDiscount" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_OperatingLeaseRentExpenses" name="OperatingLeaseRentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_OperatingExpensesOfPremisesNotToExceedPerSquareFoot" name="OperatingExpensesOfPremisesNotToExceedPerSquareFoot" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_PRBTransportationLLCMember" name="PRBTransportationLLCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TransactionCostsAccruedForCohenCapitalMarket" name="TransactionCostsAccruedForCohenCapitalMarket" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_InventoryShippingCosts" name="InventoryShippingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ExecutiveNotesMember" name="ExecutiveNotesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ScheduleOfGeneratedFromCustomersLocatedInTheUnitedStatesAbstract" name="ScheduleOfGeneratedFromCustomersLocatedInTheUnitedStatesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ServicesMember" name="ServicesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_StockIssuedDuringPeriodValueSharePurchaseCommitment" name="StockIssuedDuringPeriodValueSharePurchaseCommitment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ScheduleOfGeneratedFromCustomersLocatedInTheUnitedStatesTableTextBlock" name="ScheduleOfGeneratedFromCustomersLocatedInTheUnitedStatesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ProceedsFromIssuanceOfShorttermLoansToThirdparties" name="ProceedsFromIssuanceOfShorttermLoansToThirdparties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_AcquisitionAndIntegration" name="AcquisitionAndIntegration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ContinentalStockTransferTrustCoMember" name="ContinentalStockTransferTrustCoMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BridgeLoanAgreementsMember" name="BridgeLoanAgreementsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ReverseStockSplitLineItems" name="ReverseStockSplitLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ReverseStockSplitParShare" name="ReverseStockSplitParShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ELOCProceedsPercentage" name="ELOCProceedsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ConvertibleNoteArrangementMember" name="ConvertibleNoteArrangementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_WhiteLionMember" name="WhiteLionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SecuredConvertibleDebtMember" name="SecuredConvertibleDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ConversionPricePercentage" name="ConversionPricePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_NotePurchaseAgreementMember" name="NotePurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_LegacyCommonStockMember" name="LegacyCommonStockMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SharesIssuedForServices" name="SharesIssuedForServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ReverseStockSplitMember" name="ReverseStockSplitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_StockSplitAxis" name="StockSplitAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_StockSplitDomain" name="StockSplitDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PostSplitBasisMember" name="PostSplitBasisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ConversionOfSAFENotesToEquity" name="ConversionOfSAFENotesToEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_RepaymentOfShorttermLoanToThirdparties" name="RepaymentOfShorttermLoanToThirdparties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_OperatingLeasePayment" name="OperatingLeasePayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ReverseRecapitalizationTransaction" name="ReverseRecapitalizationTransaction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_LossOnIssuanceOfShares" name="LossOnIssuanceOfShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_PercentageOfBeneficialOwnership" name="PercentageOfBeneficialOwnership" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PercentageOfShareIssuedUnderAgreement" name="PercentageOfShareIssuedUnderAgreement" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_ScheduleOfReconcileElementsOfTheBusinessCombinationToTheCompanysCondensedConsolidatedFinancialStatementsTableTextBlock" name="ScheduleOfReconcileElementsOfTheBusinessCombinationToTheCompanysCondensedConsolidatedFinancialStatementsTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ScheduleOfDepreciationExpenseTableTextBlock" name="ScheduleOfDepreciationExpenseTableTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_BusinessCombinationAgreementMember" name="BusinessCombinationAgreementMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SeniorSecuredConvertiblePromissoryNotesMember" name="SeniorSecuredConvertiblePromissoryNotesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SeniorSecuredConvertibleLoanMember" name="SeniorSecuredConvertibleLoanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_EdgarAgentsLLCMember" name="EdgarAgentsLLCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PublicAndPrivateWarrantsMember" name="PublicAndPrivateWarrantsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PIPEInvestmentsMember" name="PIPEInvestmentsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OrdinarySharesHeldByDLAPiperLLPMember" name="OrdinarySharesHeldByDLAPiperLLPMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_CommonStockIssuedToSeeIdSafeNoteHoldersMember" name="CommonStockIssuedToSeeIdSafeNoteHoldersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_RedemptionOfOrdinaryShares" name="RedemptionOfOrdinaryShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_AdditionalCommonStockSharesIssued" name="AdditionalCommonStockSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_CommonStockIssuedToPIPEInvestorsMember" name="CommonStockIssuedToPIPEInvestorsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ScheduleOfReconcileElementsOfTheBusinessCombinationToTheCompanySCondensedConsolidatedFinancialStatementsAbstract" name="ScheduleOfReconcileElementsOfTheBusinessCombinationToTheCompanySCondensedConsolidatedFinancialStatementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ProceedsFromTrustAccount" name="ProceedsFromTrustAccount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ProceedsFromLegacyShoulderUpBankAccounts" name="ProceedsFromLegacyShoulderUpBankAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_SharesAfter1for25ReverseStockSplitMember" name="SharesAfter1for25ReverseStockSplitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SharesAtClosing" name="SharesAtClosing" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_SharesAfterReverseStockSplit" name="SharesAfterReverseStockSplit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PaymenttoPurchaseFounderShares" name="PaymenttoPurchaseFounderShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_NoncashActivitiesAbstract" name="NoncashActivitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ConversionOfShorttermDebtToEquity" name="ConversionOfShorttermDebtToEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_AccruedTaxesAssumedFromShoulderUp" name="AccruedTaxesAssumedFromShoulderUp" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ScheduleOfBridgeLoansAbstract" name="ScheduleOfBridgeLoansAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BridgeLoan1Member" name="BridgeLoan1Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BridgeLoan3Member" name="BridgeLoan3Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BridgeLoan5Member" name="BridgeLoan5Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BusinessCombinationOfEffectiveDate" name="BusinessCombinationOfEffectiveDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_NumberofOrdinarySharesHeld" name="NumberofOrdinarySharesHeld" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_ClosingDisbursementsAbstract" name="ClosingDisbursementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TransactionCostsPaidInShares" name="TransactionCostsPaidInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ParValueOfCommonStockIssued" name="ParValueOfCommonStockIssued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_BridgeLoan2Member" name="BridgeLoan2Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_BridgeLoan4Member" name="BridgeLoan4Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PaybackInCash" name="PaybackInCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_FairValueOfWarrantLiability" name="FairValueOfWarrantLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_TrancheDomainDomain" name="TrancheDomainDomain" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TrancheTwoMember" name="TrancheTwoMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PaymentOfDebtOriginationFees" name="PaymentOfDebtOriginationFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_OutstandingSharesPercentage" name="OutstandingSharesPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_StandbyEquityPurchaseAgreementMember" name="StandbyEquityPurchaseAgreementMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_VolumeWeightedAverageTradingDays" name="VolumeWeightedAverageTradingDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_NewCirclePrincipalInvestmentLLCMember" name="NewCirclePrincipalInvestmentLLCMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ShareholdersEquityDetailsTable" name="ShareholdersEquityDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_TwoThousandTwentyFourIncentivePlanMember" name="TwoThousandTwentyFourIncentivePlanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_NewCircleMember" name="NewCircleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_NumberOfSharesAccruedInterest" name="NumberOfSharesAccruedInterest" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PercentageOfLowestVolumeWeightedAveragePrice" name="PercentageOfLowestVolumeWeightedAveragePrice" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PercentageOfGreaterVolumeWeightedAveragePrice" name="PercentageOfGreaterVolumeWeightedAveragePrice" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PurchasePrice" name="PurchasePrice" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_EquityLineofCreditELOCDetailsTable" name="EquityLineofCreditELOCDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_EquityIncentivePlanDetailsTable" name="EquityIncentivePlanDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_HearingFee" name="HearingFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_AggregatePurchasePrice" name="AggregatePurchasePrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_MinimumMarketValue" name="MinimumMarketValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_RegainCompliance" name="RegainCompliance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_LoanAgreement" name="LoanAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_OutstandingCommonStock" name="OutstandingCommonStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ConversionLimitation" name="ConversionLimitation" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_SeriesCConvertiblePreferredStockMember" name="SeriesCConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_DischargeOfObligation" name="DischargeOfObligation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_IssuanceOfShare" name="IssuanceOfShare" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_NasdaqHearingsPanelMember" name="NasdaqHearingsPanelMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ProductsMember" name="ProductsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OperatingLeaseRightOfUseAssetGross" name="OperatingLeaseRightOfUseAssetGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_LeasesDetailsTable" name="LeasesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsCancelled" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsCancelled" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_SubleaseTermOfContract" name="SubleaseTermOfContract" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_WarrantsEachExercisableForOneShareOfCommonStockAtAnExercisePriceOf2875PerShareMember" name="WarrantsEachExercisableForOneShareOfCommonStockAtAnExercisePriceOf2875PerShareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_UnvestedRestrictedStock" name="UnvestedRestrictedStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_NumberOfTradingDays" name="NumberOfTradingDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_CommonStockParValueOf00001PerShareMember" name="CommonStockParValueOf00001PerShareMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_RentPerSquareFoot" name="RentPerSquareFoot" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PercentageOfRentAnnuallyIncreasing" name="PercentageOfRentAnnuallyIncreasing" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_DebtInstrumentConvertibleBeneficialConversionRatio" name="DebtInstrumentConvertibleBeneficialConversionRatio" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_CommitmentSharesMember" name="CommitmentSharesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ShareSubscriptionLineOfCreditAgreementMember" name="ShareSubscriptionLineOfCreditAgreementMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ChiefTechnologyOfficerMember" name="ChiefTechnologyOfficerMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PublicShareholdersMember" name="PublicShareholdersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OriginalPublicShareholdersMember" name="OriginalPublicShareholdersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_StartUpNVMember" name="StartUpNVMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_DLAPiperLLPMember" name="DLAPiperLLPMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_SAFENoteHoldersMember" name="SAFENoteHoldersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_InvestorReceivedSharesofCommonStock" name="InvestorReceivedSharesofCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_DerecognizedLiability" name="DerecognizedLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_FranchiseTaxLiability" name="FranchiseTaxLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_PercentageOfStockRepurchaseExciseTax" name="PercentageOfStockRepurchaseExciseTax" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_ShortTermDebtFromRelatedPartiesNet" name="ShortTermDebtFromRelatedPartiesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_TechnologySponsorLLCMember" name="TechnologySponsorLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PreSplitShare" name="PreSplitShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PostSplitShare" name="PostSplitShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ConvertibleNoteMaturityTerm" name="ConvertibleNoteMaturityTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_SEEIDCommonStockMember" name="SEEIDCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PercentageOfExercisePrice" name="PercentageOfExercisePrice" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="daic_UnsecuredBridgeLoanAgreementsMember" name="UnsecuredBridgeLoanAgreementsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OfficersAndDirectorMember" name="OfficersAndDirectorMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ShoulderUpBridgeLoanMember" name="ShoulderUpBridgeLoanMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PIPEInvestorsMember" name="PIPEInvestorsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ShoulderUpMember" name="ShoulderUpMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_StockIssuedDuringPeriodSharesSharePurchaseCommitment" name="StockIssuedDuringPeriodSharesSharePurchaseCommitment" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_PaymentsForTransactionCostsPaidInShares" name="PaymentsForTransactionCostsPaidInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_StockIssuedDuringPeriodValueReverseRecapitalizationTransactionNet" name="StockIssuedDuringPeriodValueReverseRecapitalizationTransactionNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ProceedsFromPIPEInvestments" name="ProceedsFromPIPEInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_StockIssuedDuringPeriodSharesReverseRecapitalizationTransactionNet" name="StockIssuedDuringPeriodSharesReverseRecapitalizationTransactionNet" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ProceedsFromTrustAccounts" name="ProceedsFromTrustAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_SharesIssuedForDebtOriginationFees" name="SharesIssuedForDebtOriginationFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ROUAssetObtainedInExchangeForLeaseLiability" name="ROUAssetObtainedInExchangeForLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ReverseStockSplitAbstract" name="ReverseStockSplitAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ReverseStockSplitTextBlock" name="ReverseStockSplitTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_ReverseStockSplitTable" name="ReverseStockSplitTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_RetroactiveApplicationOfRecapitalizationMember" name="RetroactiveApplicationOfRecapitalizationMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_LoansAndFairValueMeasurementsTextBlock" name="LoansAndFairValueMeasurementsTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_RecentlyIssuedAccountingPronouncementsNotYetAdoptedPolicyTextBlock" name="RecentlyIssuedAccountingPronouncementsNotYetAdoptedPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_MinimumProvisionForRequiringPaymentPercentage" name="MinimumProvisionForRequiringPaymentPercentage" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="daic_WorkingCapital" name="WorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_RegistrationFeesPaid" name="RegistrationFeesPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_StockIssuedDuringPeriodValueExciseTaxForgiveness" name="StockIssuedDuringPeriodValueExciseTaxForgiveness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="daic_ExciseTaxLiabilityWriteOff" name="ExciseTaxLiabilityWriteOff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="daic_ScheduleOfSharesOfCommonStockIssuedInConnectionWithTheBusinessCombinationAbstract" name="ScheduleOfSharesOfCommonStockIssuedInConnectionWithTheBusinessCombinationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OrdinarySharesHeldByShoulderUpBridgeLoanHolderMember" name="OrdinarySharesHeldByShoulderUpBridgeLoanHolderMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_CommonStockIssuedToHoldersOfSEEIDIncMember" name="CommonStockIssuedToHoldersOfSEEIDIncMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_CommonStockIssuedToStartUpNVMember" name="CommonStockIssuedToStartUpNVMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ShoulderUpsOfficersAndDirectorsMember" name="ShoulderUpsOfficersAndDirectorsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ClosingProceedsAbstract" name="ClosingProceedsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_OrdinarySharesHeldByNonRedemptionShareHoldersMember" name="OrdinarySharesHeldByNonRedemptionShareHoldersMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PIPE1Member" name="PIPE1Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PIPE2Member" name="PIPE2Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_PIPE3Member" name="PIPE3Member" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="daic_ScheduleOfBusinessCombinationBreakdownOfAllPipeInvestmentsAbstract" name="ScheduleOfBusinessCombinationBreakdownOfAllPipeInvestmentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xs:schema>
