{
    "tender_id": 4139268,
    "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": "2026-10-30T13:44:32Z",
            "content": "{\"cpv\": \"80550000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863192/przeprowadzenie-szkolen-z-zakresu-cyberbezpieczenstwa\", \"buyer\": \"Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich\", \"title\": \"Przeprowadzenie szkoleń z zakresu cyberbezpieczeństwa\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3863192\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T13:44:32Z\"}",
            "content_hash": "2fd2265c57d1b1c0dac384914479fd34001459ac0933225245f6e4f454b19806",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "64b2e94efc7078197d5ba53c7b804a0e2e296b3db7c46369b91918f311fdbb05",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T13:45:37Z",
            "content": "{\"cpv\": \"80550000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863192/przeprowadzenie-szkolen-z-zakresu-cyberbezpieczenstwa\", \"buyer\": \"Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich\", \"title\": \"Przeprowadzenie szkoleń z zakresu cyberbezpieczeństwa\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3863192\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T13:44:32Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1372907\"}",
            "content_hash": "df93f00a01c4de2bac0724be849db589208abb1e19885c1a27134230c9c29ec5",
            "prev_hash": "64b2e94efc7078197d5ba53c7b804a0e2e296b3db7c46369b91918f311fdbb05",
            "hash": "676bdc70117465f479b236eacf9d6a774113560ea26304615b02eca165fb33f4",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        }
    ]
}