{
    "tender_id": 3841518,
    "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": "2026-10-28T23:05:51Z",
            "content": "{\"cpv\": \"39130000\", \"url\": \"https://nid.ezamawiajacy.pl/pn/nid/demand/notice/public/240824/details\", \"buyer\": \"Narodowy Instytut Dziedzictwa\", \"title\": \"Dostawa mebli biurowych\", \"source\": \"nid_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"240824\", \"deadline_at\": \"2026-11-05T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T17:42:00Z\"}",
            "content_hash": "488ec9582991b14f5ac3c74fbc7bbe2ddfc41132d4ee2029e40887b1d96bd065",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "9aa585b55ed3d8108dae6c3e2c76ff2eaeb9b95d7eaf966fd0c128394a5d4d9d",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T23:31:46Z",
            "content": "{\"cpv\": \"39130000\", \"url\": \"https://nid.ezamawiajacy.pl/pn/nid/demand/notice/public/240824/details\", \"buyer\": \"Narodowy Instytut Dziedzictwa\", \"title\": \"Dostawa mebli biurowych\", \"source\": \"nid_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"240824\", \"deadline_at\": \"2026-11-05T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T17:42:00Z\", \"procedure_url\": \"https://nid.ezamawiajacy.pl/pn/nid/demand/notice/public/240824/details\"}",
            "content_hash": "675aa337256334f9532122aeb87e92dca710591a8222c9bac91b09a99aaf0708",
            "prev_hash": "9aa585b55ed3d8108dae6c3e2c76ff2eaeb9b95d7eaf966fd0c128394a5d4d9d",
            "hash": "bc34f1d0fb07ac24fa598f83e58d20823c753638e4a1b40731878d7ebf2cdd32",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-10-29T05:45:39Z",
            "content": "{\"cpv\": \"39130000\", \"url\": \"https://nid.ezamawiajacy.pl/pn/nid/demand/notice/public/240824/details\", \"buyer\": \"Narodowy Instytut Dziedzictwa\", \"title\": \"Dostawa mebli biurowych\", \"source\": \"nid_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"240824\", \"deadline_at\": \"2026-11-05T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T17:42:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3858769/dostawa-mebli-biurowych\"}",
            "content_hash": "363254e020f437e305fc8981f9927edb5f06cec1b1f1e63b2557ebe8aa92dc15",
            "prev_hash": "bc34f1d0fb07ac24fa598f83e58d20823c753638e4a1b40731878d7ebf2cdd32",
            "hash": "2e265f72ba22fd766d3cc55f2117420e5579c2d4fa66b25ad645fcccbe85d2ff",
            "actor": null,
            "seal": null
        }
    ]
}