OFAC’s sanctions search tool checks crypto wallets, but a clean result isn’t a clearance

The U.S. Treasury’s Office of Foreign Assets Control offers a public sanctions search tool that lets users check whether a crypto wallet address appears on its Specially Designated Nationals list, but a clean result does not constitute formal clearance. Because OFAC’s list changes continuously as designations are added and removed, a wallet that shows no match today can be flagged tomorrow, making one-time checks insufficient for compliance. The distinction matters for exchanges, custodians and DeFi protocols that rely on screening to avoid transacting with sanctioned parties, since a non-match offers no legal safe harbor. Firms should watch for list updates and pair the tool with ongoing monitoring rather than treating it as a one-off verification step.