Screen an address for OFAC + on-chain risk signals

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{ "properties": { "address": { "description": "The screened address (lowercased).", "type": "string" }, "as_of_block": { "description": "Chain height the reads were taken at (decimal string).", "type": "string" }, "chain": { "description": "Chain slug screened: base | ethereum.", "type": "string" }, "disclaimer": { "type": "string" }, "fresh_wallet": { "description": "nonce === 0 AND native balance === 0.", "type": "boolean" }, "is_contract": { "description": "Contract bytecode present at the address.", "type": "boolean" }, "reasons": { "description": "Signals that drove the verdict.", "items": { "type": "string" }, "type": "array" }, "risk_score": { "description": "0–100; 100 = sanctioned.", "type": "integer" }, "sanction_source": { "description": "\"OFAC SDN\" when sanctioned, else null.", "type": [ "string", "null" ] }, "sanctioned": { "description": "On the bundled OFAC SDN crypto list.", "type": "boolean" }, "tx_count": { "description": "Outbound tx count (nonce), decimal string.", "type": "string" }, "verdict": { "description": "Heuristic verdict. Never says \"SAFE\" — absence of signals is \"NO_RED_FLAGS_FOUND\".", "enum": [ "BLOCKED", "REVIEW", "NO_RED_FLAGS_FOUND" ], "type": "string" } }, "required": [ "chain", "address", "sanctioned", "sanction_source", "is_contract", "fresh_wallet", "tx_count", "risk_score", "verdict", "reasons", "disclaimer", "as_of_block" ], "type": "object" }