US Treasury plans Bitcoin custody framework as cold wallet security draws scrutiny

The US Treasury is building a custody framework for the Bitcoin the federal government holds, combining self-custody with third-party custodians rather than relying on a single approach. When dealing with an estimated 198,000 to 328,000 BTC, this operational infrastructure becomes critically important.

The effort is part of a broader initiative to improve federal agencies' reporting accuracy on their Bitcoin holdings, ensuring Washington knows exactly what it owns and where it's stored.

Strategic Bitcoin Reserve

This framework traces back to Executive Order 14233, issued on March 6, 2025, which created the Strategic Bitcoin Reserve. The order allows the Treasury to manage forfeited Bitcoin while prohibiting routine sales except in limited circumstances.

The reserve consists primarily of Bitcoin acquired through civil and criminal asset forfeitures from law enforcement actions, not open market purchases. The exact size remains uncertain due to pending litigation affecting whether certain coins are counted.

Cold Wallet Security

The custody initiative comes as the industry focuses more intensely on cold wallet security. Cold wallets store private keys offline on dedicated hardware devices to protect against internet-based attacks, though recent firmware issues in hardware wallets have raised concerns.

Disclosure and Acquisition

Patrick Witt, a senior crypto policy advisor, has indicated ongoing discussions about whether to publicly disclose the government's specific Bitcoin holdings, with no decision made yet. Witt is also exploring possible routes for acquiring more Bitcoin, though options require further legal analysis.

The no-routine-sales provision in EO 14233 has already changed the market calculus, though limited exceptions mean the door isn't fully closed. Until agencies settle on a reliable count, the wide range in estimates will persist, with pending litigation driving much of the uncertainty.