{
    "tender_id": 4991276,
    "check": {
        "ok": true,
        "versions": 1,
        "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": "2026-11-03T13:10:00Z",
            "content": "{\"url\": \"https://bogdanka.eb2b.com.pl/open-preview-auction.html/154185/osprzet-do-spawania-37\", \"buyer\": \"LUBELSKI WĘGIEL BOGDANKA S.A.\", \"title\": \"Osprzęt do spawania\", \"source\": \"bogdanka_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"154185\", \"deadline_at\": \"2026-11-05T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T12:00:00Z\"}",
            "content_hash": "fa4c984e95cc1e04b65fe50b299e04f137aef7cd5bb78786b6cf09eddf206757",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "064ec60ef0f716e1871d3ede12cb2b2cd9d40600f83c52777168422ee9824677",
            "actor": null,
            "seal": null
        }
    ]
}