💸 OFAC Crypto Checker

Instant offline lookup — 733 sanctioned addresses across 12 chains. Pure browser, zero network calls.

Bundled offline lookup against the OFAC SDN list of sanctioned crypto addresses. Instant, private (zero network calls), case-insensitive.

Bundled list snapshot
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Sanctioned addresses
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Chains covered
📅 List bundled at build time from 0xB10C/ofac-sanctioned-digital-currency-addresses which auto-updates from treasury.gov's SDN XML feed nightly. For up-to-the-minute checks, view the source repo or the official OFAC Sanctions Search.

Free OFAC sanctioned crypto address checker

Instant offline lookup against the US Treasury OFAC SDN list of sanctioned cryptocurrency addresses. The bundle ships 733 addresses across 12 chains (Bitcoin, Ethereum, Tether, Litecoin, Bitcoin Cash, Monero, Dash, Zcash, etc.). All checking happens locally in your browser with zero network calls.

For OSINT investigations: a positive match means the address is officially blacklisted by the US government — typically because it's tied to a sanctioned entity (Tornado Cash, Lazarus Group / DPRK, ransomware operators, sanctioned exchanges, financial-crime actors). For US persons and entities, transacting with these addresses is a legal violation.

For comprehensive sanctions screening including non-US regimes (UK OFSI, EU, UN, World Bank debarment), use the Sanctions & PEP Search page powered by OpenSanctions. For balance and transaction history of a non-sanctioned address, use the Crypto Address Profiler.

Frequently asked questions

What is the OFAC SDN list?
The Specially Designated Nationals list, maintained by the US Treasury's Office of Foreign Assets Control (OFAC). It identifies individuals, organizations, and (more recently) specific cryptocurrency addresses with which US persons are prohibited from transacting. The crypto-specific entries are tied to the underlying entity — Tornado Cash mixer addresses, Lazarus Group hot wallets, ransomware payment addresses, etc.
Why bundle the list instead of querying live?
OFAC publishes the SDN list as a single XML file with no public REST API for crypto-address lookups. Bundling the parsed list lets the check happen instantly in your browser with zero network calls — perfect privacy and zero rate limits. The trade-off is that the bundle reflects the snapshot at site-build time; new additions take a few days to propagate.
How often is the bundle updated?
The upstream source (0xB10C's repository) auto-extracts addresses from the OFAC XML at 0 UTC nightly via GitHub Actions. Max Intel re-bundles on each site deployment. For mission-critical compliance use the official OFAC search directly.
My address shows clean — am I safe to transact?
OFAC clean is necessary, not sufficient. Other regimes apply: UK OFSI/UKSL, EU consolidated, UN sanctions, plus private screening lists from Chainalysis and TRM Labs that include addresses linked to OFAC-sanctioned entities even when not formally listed. For comprehensive screening combine this tool with OpenSanctions PEP/Sanctions search.
What if I find a match by accident?
Receiving funds from a sanctioned address — even unintentionally — can trigger compliance obligations. US persons and entities should consult counsel and likely report to OFAC via the licensing system. Most major exchanges automatically flag and freeze incoming transfers from these addresses.
Why doesn't Bitcoin show as "BTC"?
OFAC and the upstream tool use the older ticker "XBT" for Bitcoin (matching the ISO 4217 currency code reservation). The lookup is performed against the address itself, not the ticker, so it works regardless of how you label the address.

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