Power of Attorney for American Bitcoin Corp.

The filing is a Limited Power of Attorney document executed by Hut 8 Corp., U.S. Data Mining Group, Inc., and American Bitcoin Holdings LLC, appointing Victor Semah as their attorney-in-fact. This appointment grants Semah the authority to prepare, execute, and submit various SEC forms and schedules on behalf of the Filers, including Forms 3, 4, and 5, and Schedules 13D and 13G. The document also allows Semah to take any other actions necessary or desirable to complete and execute these forms and schedules, and to file them with the SEC and any relevant stock exchanges. The Power of Attorney remains in effect until the Filers are no longer required to file these forms and schedules, unless revoked earlier by the Filers.