{
    "tender_id": 3437729,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-10-26T20:09:33Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1397759\", \"buyer\": \"Uniwersytet Szczeciński\", \"title\": \"Zakup sprzętu specjalistycznego IT dla Uniwersytetu Szczecińskiego\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397759\", \"deadline_at\": \"2026-10-29T11:44:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T07:47:00Z\", \"notice_number\": \"1397759\"}",
            "content_hash": "4a93e9de1a1db9d8cf2bb821b4fb439c55317a1c12bc81d8acfe226d71e595cd",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "11558a9c4edc45a15c27c2538bc5cb8ee6ec8ee94894335c6b3a94d667f80d4c",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:35:16Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1397759\", \"buyer\": \"Uniwersytet Szczeciński\", \"title\": \"Zakup sprzętu specjalistycznego IT dla Uniwersytetu Szczecińskiego\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397759\", \"deadline_at\": \"2026-10-29T11:44:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T07:47:00Z\", \"notice_number\": \"1397759\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3853206/zakup-sprzetu-specjalistycznego-it-dla-uniwersytetu-szczecinskiego\"}",
            "content_hash": "db8cf3c5a0a0a3b11d9dd5aa23e445bcc62321be93bbb34c3ddcc54be659c831",
            "prev_hash": "11558a9c4edc45a15c27c2538bc5cb8ee6ec8ee94894335c6b3a94d667f80d4c",
            "hash": "7361cd7b67d1e98cb5e76c95b2ab6fb818e43c4b6ced91f256a3af210a93ee91",
            "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": 3,
            "recorded_at": "2026-10-28T22:45:40Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1397759\", \"buyer\": \"Uniwersytet Szczeciński\", \"title\": \"Zakup sprzętu specjalistycznego IT dla Uniwersytetu Szczecińskiego\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397759\", \"deadline_at\": \"2026-10-29T11:44:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T07:47:00Z\", \"notice_number\": \"1397759\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1397759\"}",
            "content_hash": "14e93cd1a61c56780636dcfc79640cd3647c5d64197e1a9de2d73f0fc678b67f",
            "prev_hash": "7361cd7b67d1e98cb5e76c95b2ab6fb818e43c4b6ced91f256a3af210a93ee91",
            "hash": "90d63ea568164569ba163190d2a044155273c6d7f033fd789353c8523db12c7e",
            "actor": null,
            "seal": null
        }
    ]
}