{
    "tender_id": 3538035,
    "check": {
        "ok": true,
        "versions": 2,
        "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": "2026-10-27T07:29:04Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://platformazakupowa.pl/transakcja/1398519\", \"buyer\": \"Wojewódzki Szpital Specjalistyczny nr. 5 im. św. Barbary w Sosnowcu\", \"title\": \"Agregaty prądotwórcze (5 szt.)\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1398519\", \"deadline_at\": \"2026-10-30T06:40:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T06:42:00Z\", \"notice_number\": \"1398519\"}",
            "content_hash": "3b3038bcaf09bedfa6c2461dfcbc226bfd017daa85883429b78a5bf43abdae23",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "a9334bb6b99926db809115a3d5420b77b603e2e50f8302c818ef719a08d1f54f",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-27T11:33:57Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://platformazakupowa.pl/transakcja/1398519\", \"buyer\": \"Wojewódzki Szpital Specjalistyczny nr. 5 im. św. Barbary w Sosnowcu\", \"title\": \"Agregaty prądotwórcze (5 szt.)\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1398519\", \"deadline_at\": \"2026-10-30T06:40:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T06:42:00Z\", \"notice_number\": \"1398519\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1398519\"}",
            "content_hash": "a87e340f20c1cdc93e1c09534e188750152f7b36dfd53cd5f2b56b4c2b926504",
            "prev_hash": "a9334bb6b99926db809115a3d5420b77b603e2e50f8302c818ef719a08d1f54f",
            "hash": "5749062a142a6c91b5aafca489326263f940837d5aee9dbcaf4da5a324732991",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}