{
    "tender_id": 3920760,
    "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": "2026-10-29T08:52:13Z",
            "content": "{\"cpv\": \"50222000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536126/naprawa-rewizyjna-zestawow-kolowych-z-wymiana-kol-monoblokowych-na-nowe-z-pojazdow-ed78-i\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"naprawa rewizyjna zestawów kołowych z wymianą kół monoblokowych na nowe z pojazdów ED78 I\", \"region\": \"zachodniopomorskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ZACHODNIOPOMORSKIE\", \"source_id\": \"536126\", \"deadline_at\": \"2026-12-03T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:30:00Z\"}",
            "content_hash": "abdc464a0285b3f7b6c3130825b1443344e11755c77ccb9254f840a8ba982f1e",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "88c4ecc6c85aee742b2ba4c3c9ca77ca0e56ed2f9c585ffc3b713f4fb8e0c845",
            "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": "2026-10-29T09:45:34Z",
            "content": "{\"cpv\": \"50222000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536126/naprawa-rewizyjna-zestawow-kolowych-z-wymiana-kol-monoblokowych-na-nowe-z-pojazdow-ed78-i\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"naprawa rewizyjna zestawów kołowych z wymianą kół monoblokowych na nowe z pojazdów ED78 I\", \"region\": \"zachodniopomorskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ZACHODNIOPOMORSKIE\", \"source_id\": \"536126\", \"deadline_at\": \"2026-12-03T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:30:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536126/naprawa-rewizyjna-zestawow-kolowych-z-wymiana-kol-monoblokowych-na-nowe-z-pojazdow-ed78-i\"}",
            "content_hash": "6bf9d02fdc8ae95ca56cb81e7db5cd6b64093736b39c801b0818dc39622dd72d",
            "prev_hash": "88c4ecc6c85aee742b2ba4c3c9ca77ca0e56ed2f9c585ffc3b713f4fb8e0c845",
            "hash": "7aba555303b9e86c3ad1e5e58548395c50a3cf569f13d714211fe66b5c05a166",
            "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": 3,
            "recorded_at": "2026-10-29T16:39:37Z",
            "content": "{\"cpv\": \"50221300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536126/naprawa-rewizyjna-zestawow-kolowych-z-wymiana-kol-monoblokowych-na-nowe-z-pojazdow-ed78-i\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"naprawa rewizyjna zestawów kołowych z wymianą kół monoblokowych na nowe z pojazdów ED78 I\", \"region\": \"zachodniopomorskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ZACHODNIOPOMORSKIE\", \"source_id\": \"536126\", \"deadline_at\": \"2026-12-03T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:30:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536126/naprawa-rewizyjna-zestawow-kolowych-z-wymiana-kol-monoblokowych-na-nowe-z-pojazdow-ed78-i\"}",
            "content_hash": "8d08e190ca2f723da8951ca5d9f34c2f77823fac5038c054987411b2b8f33def",
            "prev_hash": "7aba555303b9e86c3ad1e5e58548395c50a3cf569f13d714211fe66b5c05a166",
            "hash": "e759efe0bf9ea2cfcb1a0ab40e03ab3398ef809937ab5fec2fa84a1708c460d4",
            "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
            }
        }
    ]
}