Grayscale Bitcoin Trust ETF Enters Custodial Services Agreement with Anchorage Digital Bank

Summary

On August 8, 2025, Grayscale Bitcoin Trust ETF (GBTC) announced a custodial services agreement with Anchorage Digital Bank N.A. This agreement involves Anchorage Digital providing services for the custody and safekeeping of the Trust's Bitcoin holdings. Anchorage Digital will keep all private keys in cold storage, enhancing security. The existing primary custodian, Coinbase Trust Company, remains unaffected. The agreement includes provisions for the event of a Bitcoin blockchain fork and indemnification clauses. The full text of the agreement is filed as Exhibit 10.1 to this report.