Internet reports that the Office of the Comptroller of the Currency (OCC) issued an explanatory letter on Wednesday, making it clear that banks can "buy and sell crypto assets they have custody at the request of customers." The OCC also noted that banks "may outsource cryptocurrency-related activities to third parties, including custody and execution services." The new policy continues the agency's shift from its previous policy in March, which no longer requires banks to seek regulatory approval before advancing crypto business.