{
    "tender_id": 3601017,
    "check": {
        "ok": true,
        "versions": 2,
        "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": "2026-10-27T13:58:12Z",
            "content": "{\"cpv\": \"34330000\", \"url\": \"https://polregio.eb2b.com.pl/open-preview-auction.html/535851/dostawa-fabrycznie-nowych-oryginalnych-korpusow-przekladni\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Dostawa fabrycznie nowych oryginalnych korpusów przekładni\", \"region\": \"lodzkie\", \"source\": \"polregio_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŁÓDZKIE\", \"source_id\": \"535851\", \"deadline_at\": \"2026-11-04T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T13:00:00Z\"}",
            "content_hash": "b4eb7aed4ed0a40cc6dc59392ce216dfe60febd2a97173dcd81abaee60fc5300",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "91dc1a2d5c4e18c3743ee1ecd49f1213682559206d9abbd6acaec2943f236565",
            "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": "2026-10-27T15:32:20Z",
            "content": "{\"cpv\": \"34330000\", \"url\": \"https://polregio.eb2b.com.pl/open-preview-auction.html/535851/dostawa-fabrycznie-nowych-oryginalnych-korpusow-przekladni\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Dostawa fabrycznie nowych oryginalnych korpusów przekładni\", \"region\": \"lodzkie\", \"source\": \"polregio_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŁÓDZKIE\", \"source_id\": \"535851\", \"deadline_at\": \"2026-11-04T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T13:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/534457/zapytanie-o-informacje-cenowa-dotyczaca-postepowania-na-zakup-drzwi-oraz-czesci-do-drzwi-taboru-kolejowego\"}",
            "content_hash": "719ee8a301ce41f6955c595cc6f1883aa79dc200e2cb23ffcde3b8da961cc336",
            "prev_hash": "91dc1a2d5c4e18c3743ee1ecd49f1213682559206d9abbd6acaec2943f236565",
            "hash": "3ecc60f7d79169589ea2f8c8a08ef2f1321aa49b0e0f3dbe2d0aa77dd5921cf5",
            "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
            }
        }
    ]
}