{
    "tender_id": 4976896,
    "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": "2026-11-03T11:10:37Z",
            "content": "{\"cpv\": \"44111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402907\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"Materiały budowlane\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402907\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T10:17:00Z\", \"notice_number\": \"1402907\"}",
            "content_hash": "e2eb3fdb05e6e4a525f7567cb97676e2eeec849272c9848332d79f8901bb4e94",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "31f4548ab0ad510b8b5374533f0cd9cedab957487052e11b077ed3e61f637248",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T14:45:46Z",
            "content": "{\"cpv\": \"44111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402907\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"Materiały budowlane\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402907\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T10:17:00Z\", \"notice_number\": \"1402907\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1402907\"}",
            "content_hash": "50ff3f130476bf001416430c21c3348b7560e8b0b522bdae2a7de8d8514a608d",
            "prev_hash": "31f4548ab0ad510b8b5374533f0cd9cedab957487052e11b077ed3e61f637248",
            "hash": "0b26b433a67a0e004a394ee834646d35fdedb759af1a665a571e9e9df13fe934",
            "actor": null,
            "seal": null
        }
    ]
}