{
  "schema": "sellat-evidence-chain-export/1",
  "history": {
    "id": "S9oTXKzIu0m5KZ88X26LHg",
    "title": "Seguimiento de precio — Roborock Q10VFP52-00 con base",
    "author": "Sellat",
    "source_url": "https://www.carrefour.es/robot-aspirador-roborock-q10vfp52-00-con-base-negro/VC4A-30873336/p?utm_source=chatgpt.com",
    "page_url": "https://sellat.app/historial/S9oTXKzIu0m5KZ88X26LHg"
  },
  "how_to_verify": [
    "For each record: SHA-256 of record_json (UTF-8 bytes) must equal record_sha256.",
    "record 1 has previous_record_sha256 = null; record n names record n-1's record_sha256.",
    "SHA-256 of the text file must equal evidence.sha256 inside record_json.",
    "record_sha256 must equal content.hash in the proof (proof_url); npx sellat-verify <record.json> <proof.json> checks the Merkle path and the Polygon anchor."
  ],
  "verdict_by_sellat": {
    "checked_at": "2026-10-08T15:42:52.008Z",
    "state": "anchored",
    "integrity": "intact",
    "note": "Computed by Sellat when this file was requested. It is a convenience, not part of the proof."
  },
  "records": [
    {
      "sequence": 1,
      "record_sha256": "8cfa224feed0bef2d3ce4e6e9fd10fdba42b00bb614bb2fe9d766976464af47f",
      "previous_record_sha256": null,
      "record_json": "{\"created_at\":\"2026-10-08T11:59:25Z\",\"evidence\":{\"algorithm\":\"SHA-256\",\"bytes\":353,\"file_name\":null,\"media_type\":\"text/plain; charset=utf-8\",\"sha256\":\"acca8d28a9bb47012cb4c20fc380e074ebb993fb61abc461f0d25df94942f99a\"},\"history\":{\"author\":\"Sellat\",\"id\":\"S9oTXKzIu0m5KZ88X26LHg\",\"source_url\":\"https://www.carrefour.es/robot-aspirador-roborock-q10vfp52-00-con-base-negro/VC4A-30873336/p?utm_source=chatgpt.com\",\"title\":\"Seguimiento de precio — Roborock Q10VFP52-00 con base\"},\"issuer\":{\"account\":\"9113f440-769c-4051-8ba8-63bb47b80f02\"},\"note\":\"Primera observación · 285,00 € · referencia 399,00 €\",\"previous_record_sha256\":null,\"schema\":\"sellat-evidence-chain/1\",\"sequence\":1}",
      "text_url": "https://sellat.app/api/historial/S9oTXKzIu0m5KZ88X26LHg/v1.txt",
      "record_url": "https://sellat.app/api/historial/S9oTXKzIu0m5KZ88X26LHg/v1.record.json",
      "proof_url": "https://sellat.app/api/v2/proof/9229d91c-dba3-49bf-9a30-7ea35da66a90.json",
      "status": {
        "sequence": 1,
        "state": "verified",
        "structural_problem": null,
        "registered_at": "2026-10-08T11:59:25Z",
        "polygon": {
          "state": "ok",
          "block_number": 95170621,
          "block_timestamp": "2026-10-08T12:05:38.000Z",
          "tx_hash": "0x7f5d9ea1a6db8d0040cfdcad4f2504f902c3301ea71b2989de567c2db265b9ff",
          "explorer_url": "https://polygonscan.com/tx/0x7f5d9ea1a6db8d0040cfdcad4f2504f902c3301ea71b2989de567c2db265b9ff"
        }
      }
    }
  ]
}