{
  "id": "api:x402-8c4c1bd06d6dd9d8",
  "kind": "api",
  "name": "sellat.app/api/v2/proofs",
  "description": "Timestamp and notarize any file, data or AI agent log by its SHA-256 hash: blockchain proof of existence and integrity for tamper-evident audit trails, anchored on Polygon in minutes, then Bitcoin (OpenTimestamps); not a notary act. Returns proof_id, certificate, proof.json and evidence ZIP, verifiable without Sellat. Use when you must prove exact data or an agent record existed and is intact.",
  "category": "x402",
  "url": "https://sellat.app/api/v2/proofs",
  "price": null,
  "x402": true,
  "meta": {
    "network": "eip155:8453",
    "scheme": "exact",
    "pay_to": "0xeDeb27856FfB8c313931B2DCE0f8375F27f4d87a",
    "method": "POST",
    "last_updated": "2026-11-11T06:18:40.439Z"
  },
  "trust": null
}