X0202 SCHEDULE 13G 0001767393 XXXXXXXX LIVE Class A ordinary shares 05/11/2026 0002042292 BTC Development Corp. G0701G109 2929 ARCH STREET, SUITE 1703 PHILADELPHIA PA 19104 Rule 13d-1(c) RP Investment Advisors LP b A6 0.00 1359018.00 0.00 1359018.00 1359018.00 5.2 PN IA FI Based upon 26,060,000 Class A ordinary shares outstanding following the issuance made pursuant to the initial public offering of the Issuer's units, as reported by the Issuer in its annual report on Form 10-K filed with the Securities and Exchange Commission on March 24, 2026. RP Select Opportunities Master Fund Ltd. b E9 0.00 1033372.00 0.00 1033372.00 1033372.00 3.9 FI Based upon 26,060,000 Class A ordinary shares outstanding following the issuance made pursuant to the initial public offering of the Issuer's units, as reported by the Issuer in its annual report on Form 10-K filed with the Securities and Exchange Commission on March 24, 2026. RP Debt Opportunities Fund Ltd. b E9 0.00 51148.00 0.00 51148.00 51148.00 0.2 FI Based upon 26,060,000 Class A ordinary shares outstanding following the issuance made pursuant to the initial public offering of the Issuer's units, as reported by the Issuer in its annual report on Form 10-K filed with the Securities and Exchange Commission on March 24, 2026. RP Alternative Global Bond Fund b A6 0.00 113587.00 0.00 113587.00 113587.00 0.4 FI Based upon 26,060,000 Class A ordinary shares outstanding following the issuance made pursuant to the initial public offering of the Issuer's units, as reported by the Issuer in its annual report on Form 10-K filed with the Securities and Exchange Commission on March 24, 2026. RP Alternative Credit Opportunities Fund b A6 0.00 160911.00 0.00 160911.00 160911.00 0.6 FI Based upon 26,060,000 Class A ordinary shares outstanding following the issuance made pursuant to the initial public offering of the Issuer's units, as reported by the Issuer in its annual report on Form 10-K filed with the Securities and Exchange Commission on March 24, 2026. BTC Development Corp. 2929 ARCH STREET, SUITE 1703, PHILADELPHIA, PENNSYLVANIA, 19104 This statement is jointly filed by and on behalf of each of RP Investment Advisors LP, RP Select Opportunities Master Fund Ltd., RP Debt Opportunities Fund Ltd., RP Alternative Global Bond Fund and RP Alternative Credit Opportunities Fund (the "Funds"). RP Select Opportunities Master Fund Ltd., RP Debt Opportunities Fund Ltd., RP Alternative Global Bond Fund and RP Alternative Credit Opportunities Fund (the "Funds") are the record and direct beneficial owners of the securities covered by this statement. RP Investment Advisors LP is the investment advisor of, and may be deemed to beneficially own securities owned by, the Funds. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is for the purposes of Section 13(d) or 13(g) of the Act or any other purpose, the beneficial owner of any securities covered by this statement. Each of the reporting persons may be deemed to be a member of a group with respect to the Issuer or securities of the Issuer for the purposes of Section 13(d) or 13(g) of the Act. Each of the reporting persons declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section 13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act together with any other person) as a partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the Issuer or otherwise with respect to the Issuer or any securities of the Issuer or (ii) a member of any group with respect to the Issuer or any securities of the Issuer. The address of the principal business office of each of the reporting persons is 39 Hazelton Avenue, Toronto, Ontario, Canada, M5R 2E3. See Item 4 on the cover page(s) hereto. Y See Item 9 on the cover page(s) hereto. See Item 11 on the cover page(s) hereto. See Item 5 on the cover page(s) hereto. See Item 6 on the cover page(s) hereto. See Item 7 on the cover page(s) hereto. See Item 8 on the cover page(s) hereto. Y N Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. RP Investment Advisors LP /s/ Richard Pilosof 05/12/2026 RP Select Opportunities Master Fund Ltd. /s/ Richard Pilosof 05/12/2026 RP Debt Opportunities Fund Ltd. /s/ Richard Pilosof 05/12/2026 RP Alternative Global Bond Fund /s/ Richard Pilosof 05/12/2026 RP Alternative Credit Opportunities Fund /s/ Richard Pilosof 05/12/2026