{
    "tender_id": 6500267,
    "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": "2026-11-11T04:07:53Z",
            "content": "{\"url\": \"https://www.przetargi.egospodarka.pl/20053281401_Dostawa-oprogramowania-do-backupu_2026_2.html\", \"buyer\": \"POWIATOWY URZĄD PRACY\", \"title\": \"Dostawa oprogramowania do backupu\", \"region\": \"zachodniopomorskie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koszalin\", \"source_id\": \"20053281401\", \"deadline_at\": \"2026-11-18T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-10T00:00:00Z\"}",
            "content_hash": "98ce215823e684108d5b2d76e12a59d27b39f4573c18118f4ee15bf2fb32bed1",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "05461a9ca4b5e166ca7ae2cc8a99e1e94c83393f342bc86da07eb4c45cb5ce17",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-11T04:46:17Z",
            "content": "{\"url\": \"https://www.przetargi.egospodarka.pl/20053281401_Dostawa-oprogramowania-do-backupu_2026_2.html\", \"buyer\": \"POWIATOWY URZĄD PRACY\", \"title\": \"Dostawa oprogramowania do backupu\", \"region\": \"zachodniopomorskie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koszalin\", \"source_id\": \"20053281401\", \"deadline_at\": \"2026-11-18T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-10T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3f23-df92-dbe9-c1c5-d5000193fe12\"}",
            "content_hash": "b6f4711fe6ea2be45e8cfcad7b2b0accdc2529e1179ad6ea06e001bfcbb4d8d7",
            "prev_hash": "05461a9ca4b5e166ca7ae2cc8a99e1e94c83393f342bc86da07eb4c45cb5ce17",
            "hash": "dc9e16460b59f0e17ce0fc5e25045b0cb162c135b5c0f2fe40b408aa16a3b5da",
            "actor": null,
            "seal": null
        }
    ]
}