{
    "tender_id": 5408511,
    "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": "2026-11-05T12:19:24Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1404830\", \"buyer\": \"EPEC Sp. z o.o.\", \"title\": \"Dostawa zasilacza UPS\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1404830\", \"deadline_at\": \"2026-11-19T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T11:56:00Z\", \"notice_number\": \"1404830\"}",
            "content_hash": "f19b5c80305799fd586aea7da12804e8eb5b1d50b0ec0f9c92a9de9c75e0fd6e",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "0fc2da13ec9fd0f24bb87797a7faab33625c925414c0a17004b108463cf8c75b",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-05T20:46:01Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1404830\", \"buyer\": \"EPEC Sp. z o.o.\", \"title\": \"Dostawa zasilacza UPS\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1404830\", \"deadline_at\": \"2026-11-19T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T11:56:00Z\", \"notice_number\": \"1404830\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1404830\"}",
            "content_hash": "b592e95111b4f2e6644f8a3b41625b8ebce1c770fe7bb0952df9b2ce0e3342bb",
            "prev_hash": "0fc2da13ec9fd0f24bb87797a7faab33625c925414c0a17004b108463cf8c75b",
            "hash": "13056bb7b8c6b5cabec794e21a0c219d92d3389bafbab6cd876cc4ccf590b778",
            "actor": null,
            "seal": null
        }
    ]
}