{
    "tender_id": 3622643,
    "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": "2026-10-27T16:21:45Z",
            "content": "{\"cpv\": \"34100000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856293/zakup-zeroemisyjnego-autobusu-komunikacji-zbiorowej-w-belchatowie\", \"buyer\": \"Urząd Miasta Bełchatowa\", \"title\": \"Zakup zeroemisyjnego autobusu komunikacji zbiorowej w Bełchatowie\", \"region\": \"lodzkie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3856293\", \"deadline_at\": \"2026-11-24T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-27T16:21:46Z\"}",
            "content_hash": "ae23de093aac2572bff4ba519ac54325b3dc1a5d285ed27765794b6f47bd26b2",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "76ce9f41f71cd4ff26b8e5708b098c7c044a9103c544b8c0d0403f311aaf214d",
            "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": "2026-10-27T19:35:46Z",
            "content": "{\"cpv\": \"34100000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856293/zakup-zeroemisyjnego-autobusu-komunikacji-zbiorowej-w-belchatowie\", \"buyer\": \"Urząd Miasta Bełchatowa\", \"title\": \"Zakup zeroemisyjnego autobusu komunikacji zbiorowej w Bełchatowie\", \"region\": \"lodzkie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3856293\", \"deadline_at\": \"2026-11-24T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-27T16:21:46Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/742573-2026\"}",
            "content_hash": "22ed21d3efc6d481a48cd6b5c709f76b520e4185f7e7e23ff9730f6e1aeb629e",
            "prev_hash": "76ce9f41f71cd4ff26b8e5708b098c7c044a9103c544b8c0d0403f311aaf214d",
            "hash": "2e68dc42a937e033d9182cdcf0c831092014ede359ca58845f10c395c357d579",
            "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": "2026-10-27T23:32:44Z",
            "content": "{\"cpv\": \"34100000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856293/zakup-zeroemisyjnego-autobusu-komunikacji-zbiorowej-w-belchatowie\", \"buyer\": \"Urząd Miasta Bełchatowa\", \"title\": \"Zakup zeroemisyjnego autobusu komunikacji zbiorowej w Bełchatowie\", \"region\": \"lodzkie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3856293\", \"deadline_at\": \"2026-11-24T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-27T16:21:46Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1384116\"}",
            "content_hash": "cdcfbabb2b90145ccd6ec89aaae02e9253d48d563a9a6c7deec3b75dc8b9b2be",
            "prev_hash": "2e68dc42a937e033d9182cdcf0c831092014ede359ca58845f10c395c357d579",
            "hash": "4a2f03fa600eb7af828926bd75f233d16f01c26124a984425a17a825a80f6686",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        }
    ]
}