Power of Attorney for Richard Busch in American Bitcoin Corp.

The filing is a Limited Power of Attorney document executed by Richard Busch, a director of American Bitcoin Corp. (ABTC). The document appoints Aliza Rana, Michael Ho, Asher Genoot, and Matt Prusak as attorneys-in-fact to act on Busch's behalf in matters related to the ownership and transactions of ABTC securities. This includes preparing and submitting SEC forms such as Form ID, Forms 3, 4, and 5, and any other necessary documents to comply with Section 16(a) of the Securities Exchange Act of 1934. The power of attorney remains in effect until Busch is no longer required to file these forms or until revoked in writing. The document was signed on September 12, 2025.