{
    "tender_id": 5044070,
    "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": "2026-11-03T20:23:01Z",
            "content": "{\"cpv\": \"39296100\", \"url\": \"https://platformazakupowa.pl/transakcja/1402819\", \"buyer\": \"Miasto Zabrze\", \"title\": \"Zapytanie ofertowe na środki czystości\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402819\", \"deadline_at\": \"2026-11-06T09:48:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:48:00Z\", \"notice_number\": \"1402819\"}",
            "content_hash": "29b2defebe55612e912653c3a29b47f72142bdbb146d8c6ac012710c820d20d3",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "6f09526e602b50d107e66b64677f857cbad7365abaf73b64bf4ad9591368cb3b",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T20:45:26Z",
            "content": "{\"cpv\": \"39296100\", \"url\": \"https://platformazakupowa.pl/transakcja/1402819\", \"buyer\": \"Miasto Zabrze\", \"title\": \"Zapytanie ofertowe na środki czystości\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402819\", \"deadline_at\": \"2026-11-06T09:48:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:48:00Z\", \"notice_number\": \"1402819\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1402179\"}",
            "content_hash": "0b547cb7018af5671b81bae8f81cb340140e3cc2c7e25ececbd570999e787d66",
            "prev_hash": "6f09526e602b50d107e66b64677f857cbad7365abaf73b64bf4ad9591368cb3b",
            "hash": "46d835d412f09a41913b6adb0f8f2482f664c0f4d061512b48c6dab626b8ae29",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-03T23:34:24Z",
            "content": "{\"cpv\": \"39296100\", \"url\": \"https://platformazakupowa.pl/transakcja/1402819\", \"buyer\": \"Miasto Zabrze\", \"title\": \"Zapytanie ofertowe na środki czystości\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402819\", \"deadline_at\": \"2026-11-06T09:48:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:48:00Z\", \"notice_number\": \"1402819\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1402819\"}",
            "content_hash": "32faf77fce8e40fccc0956d15127228136900ef224fc6486b7ad5f823db4b95b",
            "prev_hash": "46d835d412f09a41913b6adb0f8f2482f664c0f4d061512b48c6dab626b8ae29",
            "hash": "c4b41ce1666476949275240120976cd38fbcf023e20bffd9f65b3dfb539464cc",
            "actor": null,
            "seal": null
        }
    ]
}