PayPerByte · Feeds Sanctions Screen

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://x402.payperbyte.io/feeds/sanctions-screen", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "name": "Lazarus Group"
  }),
});
const data = await res.json();

curl -X POST \
  "https://x402.payperbyte.io/feeds/sanctions-screen" \
  -H "Content-Type: application/json" \
  -d '{"name":"Lazarus Group"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "_note": "Excerpt of a real answer (live service, 2026-07-01); hash/signature elided, signals/consolidated trimmed. Every answer pins the exact OFAC list version (published date + sha256 + entry count) it was judged against. Screening signal, not legal advice. The EIP-712 receipt — domain chainId 421614 = Arbitrum Sepolia, a frozen signing namespace, not a settlement rail — proves who signed these exact bytes (authenticity + tamper-evidence), not that the screening result is correct. Recompute keccak256(canonical answer bytes) and recover the signer before acting.",
  "answer": {
    "list_state": {
      "sdn": {
        "content_sha256": "a04efa5d60104ebd35fc08b6891811120d151bf37801fbd3c01e64380198f099",
        "entry_count": 19129,
        "published_date": "2026-06-30",
        "source": "OFAC SDN (Specially Designated Nationals and Blocked Persons)",
        "stale": false
      }
    },
    "methodology": "ss-v1",
    "query": {
      "address": null,
      "chain": null,
      "name": "Lazarus Group"
    },
    "reasons": [
      "name exactly matches OFAC SDN primary name \"LAZARUS GROUP\": entry #27307 \"LAZARUS GROUP\" [DPRK3] — list published 2026-06-30"
    ],
    "score": 0,
    "v": "sanctions-screen/v1",
    "verdict": "BLOCK"
  },
  "attestation": {
    "domain": {
      "chainId": 421614,
      "name": "BYTE Library",
      "verifyingContract": "0x44729bB148F46d8Db509E47b0453edc271e06e95",
      "version": "1"
    },
    "payloadHash": "0x…",
    "signature": "0x…",
    "signer": "0x344ECaCDe6566294c31397445c98b62a3EEEA456"
  }
}