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            <identifier scheme="http://www.sec.gov/CIK">0002033770</identifier>
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            <endDate>2025-12-31</endDate>
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    <dei:EntityRegistrantName contextRef="c0" id="ixv-84">CID HoldCo, Inc.</dei:EntityRegistrantName>
    <ecd:InsiderTrdPoliciesProcAdoptedFlag contextRef="c0" id="ixv-5294">true</ecd:InsiderTrdPoliciesProcAdoptedFlag>
    <ecd:ErrCompAnalysisTextBlock contextRef="c1" id="ixv-1589">&lt;p class="Text_ind" style="margin:0;padding:0;border-width:0;font-family:Times New Roman PS Std, serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;margin-bottom:0;margin-left:0;margin-right:0;margin-top:8pt;orphans:2;page-break-after:auto;page-break-before:auto;text-align:justify;text-indent:24pt;widows:3;margin-top:8pt;"&gt;We have adopted a clawback policy intended to comply with Section&#160;10D of the Exchange&#160;Act, Rule&#160;10D&lt;span class="nobreak"&gt;-1&lt;/span&gt; thereunder and the applicable rules of any national securities exchange on which the Company&#x2019;s securities are listed. The clawback policy applies to all Affected Officers of the Company. Affected Officers means any current or former &#x201c;officer&#x201d; as defined in Exchange&#160;Act Rule&#160;16a&lt;span class="nobreak"&gt;-1&lt;/span&gt;, and any other senior executives as determined by the Compensation Committee. This policy ensures that in the event of an accounting restatement due to material non&lt;span class="nobreak"&gt;-compliance&lt;/span&gt; with financial reporting requirements, the Company can recover erroneous incentive&lt;span class="nobreak"&gt;-based&lt;/span&gt; compensation received by an Affected Officers.&lt;/p&gt;</ecd:ErrCompAnalysisTextBlock>
    <ecd:AwardTmgMnpiDiscTextBlock contextRef="c0" id="ixv-4323">&lt;p class="Text_ind" style="margin:0;padding:0;border-width:0;font-family:Times New Roman PS Std, serif;font-size:10pt;font-style:normal;font-variant:normal;font-weight:normal;margin-bottom:0;margin-left:0;margin-right:0;margin-top:8pt;orphans:2;page-break-after:auto;page-break-before:auto;text-align:justify;text-indent:24pt;widows:3;margin-top:8pt;"&gt;We grant equity awards to our executives, including stock options, as part of their total compensation. In 2025, we did not grant stock options on any date that, in relation to our disclosure of material nonpublic information, would require us to provide the tabular disclosures of Item&#160;402(x)(2)&#160;of Regulation&#160;S&lt;span class="nobreak"&gt;-K&lt;/span&gt;.&#160;Accordingly, we have no specific policy or practice on the timing of awards of such options in relation to the disclosure of material nonpublic information by us. In the event that we decide to grant new awards of such options, the Compensation Committee will evaluate the appropriate steps to take in relation to the foregoing. Our insider trading policy also provides guidelines around the repurchases of our securities, which are generally only made pursuant to a Rule&#160;10b5&lt;span class="nobreak"&gt;-1&lt;/span&gt; trading plan established when we are not in possession of material nonpublic information.&lt;/p&gt;</ecd:AwardTmgMnpiDiscTextBlock>
    <ecd:AwardTmgMethodTextBlock contextRef="c0" id="ixv-4325">We grant equity awards to our executives, including stock options, as part of their total compensation. In 2025, we did not grant stock options on any date that, in relation to our disclosure of material nonpublic information, would require us to provide the tabular disclosures of Item&#160;402(x)(2)&#160;of Regulation&#160;S&lt;span class="nobreak"&gt;-K&lt;/span&gt;.&#160;Accordingly, we have no specific policy or practice on the timing of awards of such options in relation to the disclosure of material nonpublic information by us.</ecd:AwardTmgMethodTextBlock>
    <ecd:AwardTmgHowMnpiCnsdrdTextBlock contextRef="c0" id="ixv-4327">In the event that we decide to grant new awards of such options, the Compensation Committee will evaluate the appropriate steps to take in relation to the foregoing. Our insider trading policy also provides guidelines around the repurchases of our securities, which are generally only made pursuant to a Rule&#160;10b5&lt;span class="nobreak"&gt;-1&lt;/span&gt; trading plan established when we are not in possession of material nonpublic information.</ecd:AwardTmgHowMnpiCnsdrdTextBlock>
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