美國貨幣監理署（OCC）發布第 1186 號解釋函，確認國家銀行在開展其他已獲許可的業務時，可支付區塊鏈網路費用（又稱「Gas 費」，即礦工費），並可在資產負債表上持有為支付該等費用所需、且基於合理可預見需求的加密資產。解釋函同時確認，國家銀行為測試其他已獲許可的加密資產相關平台（不論為內部開發或第三方提供），可持有必要數量的加密資產。OCC 表示，相關活動必須以安全穩健的方式開展，並遵守適用法律規定

The Office of the Comptroller of the Currency (OCC) issued Interpretive Letter No. 1186, confirming that national banks may pay blockchain network fees (also known as 'Gas fees' or 'miner fees') when conducting other licensed business activities, and may hold cryptocurrencies on their balance sheets that are necessary for paying such fees and based on reasonably foreseeable needs. The interpretive letter also confirms that national banks may hold a necessary amount of cryptocurrencies to test other licensed cryptocurrency-related platforms (whether developed in-house or provided by third parties). The OCC stated that relevant activities must be conducted in a safe and sound manner and comply with applicable legal requirements.