{
    "tender_id": 3907950,
    "check": {
        "ok": true,
        "versions": 1,
        "broken_at": null
    },
    "formula": "content_hash = sha256(content); hash = sha256(prev_hash + \"\\n\" + tender_id + \"\\n\" + version + \"\\n\" + recorded_at + \"\\n\" + content_hash [+ \"\\n\" + actor, when the version has one])",
    "versions": [
        {
            "version": 1,
            "recorded_at": "2026-10-29T06:54:44Z",
            "content": "{\"cpv\": \"85100000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/101024-2026\", \"buyer\": \"City of Doncaster Council\", \"title\": \"Wielka Brytania – Experts at Hand Service\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"85140000\"], \"source_id\": \"ocds-h6vhtk-079026\", \"deadline_at\": \"2026-11-30T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-26T13:34:25Z\", \"notice_number\": \"101024-2026\"}",
            "content_hash": "06fa234bc757b22121e19155e22039d112871b88a966898145b427787c0dfb8b",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "23fac1ca3166b6b308b096e64aaaf80c1d081484d7fe6da58e11461a005cfffb",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        }
    ]
}