{
    "tender_id": 5046947,
    "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/1403029\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"5/PGK Usługi szkolenia BHP\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1403029\", \"deadline_at\": \"2026-11-13T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T20:43:43Z\", \"notice_number\": \"1403029\"}",
            "content_hash": "15a40bac0da327d92679fad4fc54f2889e046233dadeb8712a025729288d88d9",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "f96016036bb1ef72f858cf9909b60d9b14ec01d56d12e4de5e0fa423b642938b",
            "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": "2026-11-04T00:08:10Z",
            "content": "{\"cpv\": \"18930000\", \"url\": \"https://platformazakupowa.pl/transakcja/1403029\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"5/PGK Usługi szkolenia BHP\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1403029\", \"deadline_at\": \"2026-11-13T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:18:00Z\", \"notice_number\": \"1403029\"}",
            "content_hash": "e4d1550a408e876469488c201d8fc377116a58b13cbdb70e74a75f7207d5d7e0",
            "prev_hash": "f96016036bb1ef72f858cf9909b60d9b14ec01d56d12e4de5e0fa423b642938b",
            "hash": "1f29f895f5cedcb3fa10a31029d190c07331f05d13c363c5c34b3c5cb280df07",
            "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
            }
        }
    ]
}