{
    "tender_id": 5172797,
    "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": "2026-11-04T09:55:34Z",
            "content": "{\"cpv\": \"09135100\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3871638/dostawy-oleju-grzewczego-do-kotlowni-olejowych-znajdujacych-sie-w-obiektach-nalezacych-do-gminy-leszno\", \"buyer\": \"Gmina Leszno\", \"title\": \"Dostawy oleju grzewczego do kotłowni olejowych znajdujących się w obiektach należących do Gminy Leszno\", \"region\": \"wielkopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3871638\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T09:55:35Z\"}",
            "content_hash": "a61df989ffb6c1a8405e986f03372844870ebd4b798be51a7caf85b44de9c007",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "1e17886bf01efcc3daf49720a1a66a6a8f2216bccb34afd4d0384a5024150ce4",
            "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
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T10:46:01Z",
            "content": "{\"cpv\": \"09135100\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3871638/dostawy-oleju-grzewczego-do-kotlowni-olejowych-znajdujacych-sie-w-obiektach-nalezacych-do-gminy-leszno\", \"buyer\": \"Gmina Leszno\", \"title\": \"Dostawy oleju grzewczego do kotłowni olejowych znajdujących się w obiektach należących do Gminy Leszno\", \"region\": \"wielkopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3871638\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T09:55:35Z\", \"procedure_url\": \"https://gminaleszno.ezamawiajacy.pl/pn/gminaleszno/demand/notice/public/241880/details\"}",
            "content_hash": "36758e572353abb62078e3770737727f5c6dfefe84c643afd125a5e5b557cbc2",
            "prev_hash": "1e17886bf01efcc3daf49720a1a66a6a8f2216bccb34afd4d0384a5024150ce4",
            "hash": "3b73cac5c9bc3419c4683f99266986bc8f27ea13773f66e62eb4b5cfcd1ebbbf",
            "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
            }
        }
    ]
}