Uniform Treatment of Custodial Assets Act This bill addresses the accounting treatment of certain assets, including digital assets, at financial institutions. For example, under the bill, federal regulatory entities are prohibited from requiring specified financial institutions to include as a liability on financial statements assets that are held in custody or safekeeping by the institution. This applies to assets associated with a cryptographic key held in custody or safekeeping by the financial institution. However, if cash held by an institution for a third party is commingled with the general assets of the institution, that cash may be treated as a liability.