{
    "tender_id": 4017857,
    "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": "2026-10-29T19:30:18Z",
            "content": "{\"cpv\": \"39296100\", \"url\": \"https://platformazakupowa.pl/transakcja/1400171\", \"buyer\": \"Miasto Zabrze\", \"title\": \"zapytanie ofertowe\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400171\", \"deadline_at\": \"2026-11-06T07:45:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T07:47:00Z\", \"notice_number\": \"1400171\"}",
            "content_hash": "54df8a658ca1484f7ba00852b24d62e1ec367113daf8c9d10375b85b3c454372",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "0caeecd465b4358d3fa427c005c0ee6c7e3d4eaa3792aaebf810be8030fca4e6",
            "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
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-29T19:46:00Z",
            "content": "{\"cpv\": \"39296100\", \"url\": \"https://platformazakupowa.pl/transakcja/1400171\", \"buyer\": \"Miasto Zabrze\", \"title\": \"zapytanie ofertowe\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400171\", \"deadline_at\": \"2026-11-06T07:45:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T07:47:00Z\", \"notice_number\": \"1400171\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860099/zapytanie-ofertowe\"}",
            "content_hash": "d4e020ffb90c45849183141abfd342b9c4941d82ce5967024f0a539f3eae10cf",
            "prev_hash": "0caeecd465b4358d3fa427c005c0ee6c7e3d4eaa3792aaebf810be8030fca4e6",
            "hash": "2b2a7d6b070b4c6b578d54737d575f5cec0a724c449a2af27e7822bcb032781c",
            "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
            }
        }
    ]
}