{
    "tender_id": 1049453,
    "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"15131130\", \"url\": \"https://oisw-opole.ezamawiajacy.pl/pn/OISW-OPL/demand/notice/public/236380/details\", \"buyer\": \"Zakład Karny w Kłodzku\", \"title\": \"Dostawa mięsa i wyrobów wędliniarskich w 2027 r.\", \"region\": \"dolnoslaskie\", \"source\": \"oisw_opole_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"236380\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T11:41:00Z\", \"procedure_url\": \"https://oisw-opole.ezamawiajacy.pl/pn/OISW-OPL/demand/notice/public/236380/details\"}",
            "content_hash": "30e4a421e6c74a22f63a74ebf7957300ed9f335e06cb5352bb340a5c3dfda7bd",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "de5fd7e054acfb7dd1b6cb91b33ce68343fdb4d17d547dfb0f3f041f3bd24c2e",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        }
    ]
}