{
    "tender_id": 2847337,
    "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\": \"79823000\", \"url\": \"https://platformazakupowa.pl/transakcja/1396558\", \"buyer\": \"Muzeum Zamkowe w Malborku\", \"title\": \"ZP.2611.20.2026.da Druk i dostawa czasopisma Studia Zamkowe t. XII dla Muzeum Zamkowe w Malborku\", \"region\": \"pomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1396558\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T11:15:00Z\", \"notice_number\": \"1396558\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1396558\"}",
            "content_hash": "ca4c5759d660f4bddde92d08a6efb88ea1f1d43dd35be9e892e64da48b58b564",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "a7bd0e1e7bd36e6565a389f8987588202c5ec623647ac1db53c3bc8cadd6f1ed",
            "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
            }
        }
    ]
}