{
    "tender_id": 5659593,
    "check": {
        "ok": true,
        "versions": 4,
        "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": "2026-11-06T17:50:13Z",
            "content": "{\"cpv\": \"14622000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\", \"buyer\": \"Miejskie Zakłady Komunikacyjne Spółka z o.o. w Bydgoszczy\", \"title\": \"Dostawa blachy i prętów\", \"region\": \"kujawsko-pomorskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3880633\", \"deadline_at\": \"2026-11-10T09:39:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-06T17:50:14Z\"}",
            "content_hash": "e6d9bf76e278382f570ac0aba014fdb43a0c8c7cb0a6f6755bd945cd5bc1eb03",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "5d473886b3af5d8fa45ad2ef4fe46adbb3390ba821374edf8224378122476609",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-06T20:45:39Z",
            "content": "{\"cpv\": \"14622000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\", \"buyer\": \"Miejskie Zakłady Komunikacyjne Spółka z o.o. w Bydgoszczy\", \"title\": \"Dostawa blachy i prętów\", \"region\": \"kujawsko-pomorskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3880633\", \"deadline_at\": \"2026-11-10T09:39:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-06T17:50:14Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\"}",
            "content_hash": "30dcaecd90264225ea71b444cf24f4715c019d36619f31350c5f536644d1ec0b",
            "prev_hash": "5d473886b3af5d8fa45ad2ef4fe46adbb3390ba821374edf8224378122476609",
            "hash": "e3b6954012b49f8ba77f8ecc626a9a3374fb95e7012cc04c922f33e610fbbdea",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-08T08:47:08Z",
            "content": "{\"cpv\": \"14622000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\", \"buyer\": \"Miejskie Zakłady Komunikacyjne Spółka z o.o. w Bydgoszczy\", \"title\": \"Dostawa blachy i prętów\", \"region\": \"kujawsko-pomorskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3880633\", \"deadline_at\": \"2026-11-10T09:39:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-06T17:50:14Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1405691\"}",
            "content_hash": "2111a0001ade24ec4ccd3be9e67802771066db4ed95e803c748ebd71d2dee92a",
            "prev_hash": "e3b6954012b49f8ba77f8ecc626a9a3374fb95e7012cc04c922f33e610fbbdea",
            "hash": "5c864f2e01a890bd248efa3dc33f965a6f8ee8374ca300a61c6d8ec151366f4a",
            "actor": null,
            "seal": null
        },
        {
            "version": 4,
            "recorded_at": "2026-11-08T16:46:04Z",
            "content": "{\"cpv\": \"14622000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\", \"buyer\": \"Miejskie Zakłady Komunikacyjne Spółka z o.o. w Bydgoszczy\", \"title\": \"Dostawa blachy i prętów\", \"region\": \"kujawsko-pomorskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3880633\", \"deadline_at\": \"2026-11-10T09:39:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-06T17:50:14Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880633/dostawa-blachy-i-pretow\"}",
            "content_hash": "30dcaecd90264225ea71b444cf24f4715c019d36619f31350c5f536644d1ec0b",
            "prev_hash": "5c864f2e01a890bd248efa3dc33f965a6f8ee8374ca300a61c6d8ec151366f4a",
            "hash": "b9edb4b60a84ddacdbf7f61e97bc208fa714a7d2f7e892530d11a58d845775cd",
            "actor": null,
            "seal": null
        }
    ]
}