This proposed rule would require U.S. financial institutions to collect information about payment recipients who host their own cryptocurrency wallets. It is entirely possible that neither a U.S. financial institution nor its customer knows the identity of a recipient. It is likely that U.S. financial institutions will block payments to recipients they cannot verify. If finalized, this rule may create a pool of verified and monitored cryptocurrency customers of U.S. financial institutions. But it may also push many people, including bad actors, into a sea of unhosted wallets and other areas where transaction-monitoring for financial crimes remains more difficult.