SanctionCheck

On-chain compliance screening for crypto wallet addresses. Given a wallet address, SanctionCheck returns whether it currently appears on OFAC SDN sanctions lists or on USDT/USDC issuer blacklists, including the date it was listed and matching details (entity name, sanctions programs, legal basis). Sanctions screening covers multiple chains (EVM, Tron, Bitcoin and others); stablecoin blacklist screening covers Ethereum and Tron. Each call is a single binary query returning listed or not_listed. Capabilities: sanctions_screening, ofac_screening, wallet_compliance, blacklist_check. Price: 0.10 USDC per query on Base via x402. This service reports only the presence or absence of an address in the listed data sources at query time; it is not investment, legal, or compliance advice, and a not_listed result is not an assertion that an address is safe.