Does OFAC apply to crypto mining?

OFAC can reach mining activity when a miner or pool processes transactions that involve sanctioned addresses.

TL;DR

TL;DR: Yes. OFAC obligations can apply to miners and mining pools when they process transactions involving listed addresses, and some pools now filter transactions against sanctions data before including them in blocks.

How OFAC reaches miners

OFAC, the Office of Foreign Assets Control, administers the SDN List, the Specially Designated Nationals and Blocked Persons List. A miner or pool that processes a transaction linked to a listed person can inherit sanctions exposure. Enforcement is strict liability, so intent is not required.

What screening looks like for mining

Some mining pools have implemented sanctions-aware transaction filtering, checking inputs and outputs against sanctions data before a block is built. The 50 Percent Rule adds another layer: entities 50% or more owned by a blocked person are blocked too.

Where agent screening helps

sanctionsai.dev (agentmail) screens a counterparty before an AI agent pays, returning clean (ALLOW) or flagged (BLOCK) in one HTTP call under 100 ms. The live dataset covers 947 OFAC-listed crypto wallets and 19,218 SDN names across 16 jurisdictions, synced hourly, so miners and agents can check addresses against current data.

Practical controls for miners

The practical control is the same as for any payment: check the addresses you touch against current sanctions data before including a transaction. sanctionsai.dev returns clean (ALLOW) or flagged (BLOCK) in under 100 ms, which is fast enough to run before block assembly without meaningfully slowing mining.