{
    "tender_id": 1181407,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3810893/b-20-2026-przebudowa-budynku-biblioteki-glownej-i-instytutu-historii-uniwersytetu-opolskiego-\", \"buyer\": \"Uniwersytet Opolski\", \"title\": \"B/20/2026 Przebudowa budynku Biblioteki Głównej i Instytutu Historii Uniwersytetu Opolskiego.\", \"region\": \"opolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3810893\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-13T12:00:17Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/677117-2026\"}",
            "content_hash": "5e9068a654b6d01788062eb6b0b6a4567c6e41b3ecbf4570fa9e91a5cd01f908",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3eaad27784699fd51471f1b945ef1ad8dd3aa9de42780d6b1162d1257fdf5d44",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:35:39Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3810893/b-20-2026-przebudowa-budynku-biblioteki-glownej-i-instytutu-historii-uniwersytetu-opolskiego-\", \"buyer\": \"Uniwersytet Opolski\", \"title\": \"B/20/2026 Przebudowa budynku Biblioteki Głównej i Instytutu Historii Uniwersytetu Opolskiego.\", \"region\": \"opolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3810893\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-13T12:00:17Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3810893/b-20-2026-przebudowa-budynku-biblioteki-glownej-i-instytutu-historii-uniwersytetu-opolskiego-\"}",
            "content_hash": "a0419cfa871adbf95a9941e2c48e47fcdc95b7e8ec0f2eae7e01eebbf98fce95",
            "prev_hash": "3eaad27784699fd51471f1b945ef1ad8dd3aa9de42780d6b1162d1257fdf5d44",
            "hash": "5bfe11220b19d3d89c1bbe6833d9cb496f0adef08259ad420959103254c8d7be",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-27T11:34:08Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3810893/b-20-2026-przebudowa-budynku-biblioteki-glownej-i-instytutu-historii-uniwersytetu-opolskiego-\", \"buyer\": \"Uniwersytet Opolski\", \"title\": \"B/20/2026 Przebudowa budynku Biblioteki Głównej i Instytutu Historii Uniwersytetu Opolskiego.\", \"region\": \"opolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3810893\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-13T12:00:17Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/677117-2026\"}",
            "content_hash": "5e9068a654b6d01788062eb6b0b6a4567c6e41b3ecbf4570fa9e91a5cd01f908",
            "prev_hash": "5bfe11220b19d3d89c1bbe6833d9cb496f0adef08259ad420959103254c8d7be",
            "hash": "bc756d82ce453f8ec7b46a8fb93f2adb248d2728d537be4337ea9d49f4666a6c",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}