The Office of the Comptroller of the Currency (OCC) is letting all nationally chartered banks in the U.S. provide custody services for cryptocurrencies.
In a public letter dated July 22, Senior Deputy Comptroller and Senior Counsel Jonathan Gould wrote that any national bank can hold onto the unique cryptographic keys for a cryptocurrency wallet, clearing the way for national banks to hold digital assets for their clients.
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https://www.coindesk.com/banks-in-us-can-now-offer-crypto-custody-services-regulator-says