美國貨幣監理署（OCC）發布第1188號解釋性信函，確認國家銀行可在符合監管規範的前提下，從事「無風險本金」加密資產交易。此類交易是指銀行以自身名義，同時與兩名客戶進行方向相反的加密資產交易，過程中不持有加密資產庫存，僅扮演中介角色。美國貨幣監理署強調，相關業務活動必須在安全穩健、遵守法令的前提下推動。

The Office of the Comptroller of the Currency (OCC) issued Interpretive Letter No. 1188, confirming that national banks are permitted to engage in 'principal-risk-free' cryptocurrency transactions on the premise of compliance. This type of transaction refers to banks conducting opposite-direction cryptocurrency trades with two clients simultaneously in their own name, without holding cryptocurrency inventories and acting solely as intermediaries. The OCC emphasized that relevant activities must be carried out in a safe, sound and law-abiding manner.