{
  "_note": "This is a canonical sample dossier. The same shape is what /api/screen and /api/preflight return. The subject (Amnokgang Technology Development Company) is on the active OFAC SDN list, so the dossier exhibits the highest-severity rule output.",
  "_docs": "https://sentry402.vercel.app/methodology",
  "sample_request": {
    "method": "GET",
    "url": "https://sentry402.vercel.app/api/screen?chain=eth-mainnet&to_address=0xcB74874f1e06Fcf80A306e06e5379A44B488bA2D"
  },
  "verdict": "block",
  "score": 100,
  "severity": "critical",
  "reasoning": "Destination matched 2 critical-severity indicators. Transfer should be aborted.",
  "signals": [
    {
      "id": "sig_PZFXTTQRCE",
      "type": "ofac_direct_match",
      "severity": "critical",
      "title": "Subject wallet on active OFAC SDN list: Amnokgang Technology Development Company (DPRK)",
      "rationale": "The subject wallet is a direct match on the active OFAC SDN list (Amnokgang Technology Development Company (DPRK); designation source: OFAC SDN 2026-03-12, Treasury SB0416). This is a Hop-0 sanctions hit, not transitive exposure. Per OFAC's 50% rule and Treasury enforcement guidance, all transactions involving this address are prohibited for U.S. persons, and any non-U.S. person facilitating such transactions risks secondary sanctions. Recommend immediate freeze, SAR filing, and counsel review.",
      "fatf_reference": "FATF Recommendation 6 (Targeted Financial Sanctions related to Terrorism, Terrorist Financing, and Proliferation)",
      "fincen_reference": "FinCEN SAR Form 111 — Suspicious Activity Type 31y (Transaction with OFAC sanctioned country/entity)",
      "evidence_ids": [
        "ev_KGQQSH2X8Z"
      ],
      "score_contribution": 100,
      "metadata": {
        "sdn_label": "Amnokgang Technology Development Company (DPRK)",
        "sdn_category": "ofac_sdn_active",
        "sdn_source": "OFAC SDN 2026-03-12, Treasury SB0416",
        "sdn_added_at": "2026-03-12"
      }
    },
    {
      "id": "sig_BFN64HVS2Q",
      "type": "external_sanctions_oracle_confirmed",
      "severity": "critical",
      "title": "Chainalysis Sanctions Oracle confirms active SDN match (Amnokgang Technology Development Company (DPRK))",
      "rationale": "Two independent SDN datasets converge on this address. The local SDN list (sdn_list_version pinned in metadata) flags the subject as sanctioned; the public Chainalysis Sanctions Oracle (contract 0x40C57923924B5c5c5455c48D93317139ADDaC8fb on Ethereum mainnet) independently returns isSanctioned=true via on-chain eth_call. Chainalysis maintains the oracle directly and updates it promptly after Treasury designations; the same reference is consumed by Uniswap, Coinbase Wallet, and most major frontends. The cross-check adds an independent, court-admissible source to the dossier without altering the score (the underlying ofac_direct_match signal already saturated at 100).",
      "fatf_reference": "FATF Recommendation 6 (Targeted Financial Sanctions related to Terrorism, Terrorist Financing, and Proliferation)",
      "fincen_reference": "FinCEN SAR Form 111 — independent corroborating source",
      "evidence_ids": [
        "ev_SHYASS7MJ0"
      ],
      "score_contribution": 0,
      "metadata": {
        "oracle_rpc": "https://ethereum-rpc.publicnode.com",
        "oracle_latency_ms": 96
      }
    }
  ],
  "evidence": {
    "ev_KGQQSH2X8Z": {
      "id": "ev_KGQQSH2X8Z",
      "endpoint": "internal:sdn_lookup",
      "endpoint_url": "https://home.treasury.gov/policy-issues/financial-sanctions/specially-designated-nationals-and-blocked-persons-list-sdn-human-readable-lists",
      "request_params": {
        "wallet": "0xcB74874f1e06Fcf80A306e06e5379A44B488bA2D",
        "sdn_list_version": "2026-05-07-tc-expanded"
      },
      "response_excerpt": {
        "match": {
          "address": "0xcb74874f1e06fcf80a306e06e5379a44b488ba2d",
          "label": "Amnokgang Technology Development Company (DPRK)",
          "category": "ofac_sdn_active",
          "source": "OFAC SDN 2026-03-12, Treasury SB0416",
          "added_at": "2026-03-12"
        }
      },
      "tx_hashes": [],
      "block_heights": [],
      "chain": "eth-mainnet",
      "goldrush_api_version": "2.3.8",
      "fetched_at": "2026-07-14T08:12:09.736Z"
    },
    "ev_SHYASS7MJ0": {
      "id": "ev_SHYASS7MJ0",
      "endpoint": "Chainalysis Sanctions Oracle: isSanctioned(address)",
      "endpoint_url": "https://etherscan.io/address/0x40C57923924B5c5c5455c48D93317139ADDaC8fb#readContract",
      "request_params": {
        "contract": "0x40C57923924B5c5c5455c48D93317139ADDaC8fb",
        "selector": "0xdf592f7d",
        "argument": "0xcb74874f1e06fcf80a306e06e5379a44b488ba2d",
        "rpc_used": "https://ethereum-rpc.publicnode.com",
        "chainalysis_oracle_version": "2026-05-30-publicnode"
      },
      "response_excerpt": {
        "sanctioned": true,
        "raw_response": "0x0000000000000000000000000000000000000000000000000000000000000001",
        "latency_ms": 96
      },
      "tx_hashes": [],
      "block_heights": [],
      "chain": "eth-mainnet",
      "goldrush_api_version": "2.3.8",
      "fetched_at": "2026-07-14T08:12:09.826Z"
    }
  },
  "metadata": {
    "rule_pack_version": "0.5.0-mvp",
    "rule_pack_sha256": "d406ede9316664f87d21fe70ec0d71d45adfcbb88f5671e7f69286eba1629e3f",
    "sdn_list_version": "2026-05-07-tc-expanded",
    "goldrush_api_version": "2.3.8",
    "generator": {
      "name": "sentry402",
      "version": "0.2.0"
    },
    "generation_id": "gen_Z09S6JW67Y",
    "generated_at": "2026-07-14T08:12:09.826Z",
    "stablecoin_registry_version": "2026-05-07-seed",
    "issuer_frozen_list_version": "2026-05-07-seed",
    "known_addresses_version": "2026-05-07-seed",
    "fast_path": "ofac_direct_match",
    "chainalysis_oracle_version": "2026-05-30-publicnode"
  },
  "latency_ms": 98
}