{
    "tender_id": 5046945,
    "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": "2026-11-03T20:43:42Z",
            "content": "{\"cpv\": \"18930000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402988\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"3/PGK Usługi szkolenia BHP\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402988\", \"deadline_at\": \"2026-11-13T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T20:43:43Z\", \"notice_number\": \"1402988\"}",
            "content_hash": "99b4b47011d261d6b33467cd0a5b289231e9867048a3f721053ddfb8543876e7",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "6923246e9f53ef070076a78c7526d0f531295dbb001f0655ee571652a30a84cc",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T00:08:00Z",
            "content": "{\"cpv\": \"18930000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402988\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"3/PGK Usługi szkolenia BHP\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402988\", \"deadline_at\": \"2026-11-13T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:00:00Z\", \"notice_number\": \"1402988\"}",
            "content_hash": "c27f589c1d9d9826f9d4fb8fd3223e34ac3f8de7037f1ea2b63b84d9b2353dd7",
            "prev_hash": "6923246e9f53ef070076a78c7526d0f531295dbb001f0655ee571652a30a84cc",
            "hash": "3ed8e8b22875a95c257e7aaf5833ed6228a581311aad65d108f5ad76cc44220d",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        }
    ]
}