Can OFAC freeze crypto in self-custody?
OFAC designates addresses rather than freezing self-custodied coins, but on-ramps, off-ramps, and counterparties will avoid designated wallets.
TL;DR
TL;DR: OFAC designates addresses; it does not freeze self-custodied crypto. But on-ramps, off-ramps, and counterparties will avoid designated addresses, effectively cutting off their use.
What OFAC can and cannot do
When OFAC adds a wallet to the Specially Designated Nationals and Blocked Persons List, it does not reach into the wallet and move the coins. Self-custodied assets stay in the holder's control. What OFAC does is make it illegal for US persons to deal with that address, and 947 crypto wallets are now designated in exactly this way.
Why designation still matters
Blocking is enforced by the ecosystem, not by a freeze button. Exchanges, custodians, and payment providers screen against the SDN List and will refuse to accept deposits from, or send withdrawals to, a designated address. The effect is a wallet that cannot easily convert crypto to fiat or transact with compliant counterparties. Strict liability applies to anyone who does transact with it, with penalties starting at $356,000 per violation.
What this means for you
- Screen every counterparty wallet, including your own incoming flows.
- Treat a designated address as unusable even though the coins remain in it.
- Use a screening API like sanctionsai.dev to check addresses in under 100 ms.
Self-custody holds the coins; designation removes their utility.
Even self-custody users should screen counterparties, because transacting with a designated address makes the user the next link in a prohibited chain.