Advise further clarification is necessary, including which coins or tokens were sold and whether the crypto exchange conducts due diligence on its clients

Advise that the transaction should be stopped because cryptoassets in general are not regulated and by definition pose an unacceptable AML risk for the bank

Confirm to the advisor that the customer can proceed with the transaction if the client's KYC is up to date and a search on a public blockchain explorer does not provide any adverse media hits

Confirm to the advisor that the customer can proceed with the transaction because clients are already correctly onboarded KYC is complete and the source of funds is transparent