{
    "tender_id": 6350616,
    "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": "2026-11-10T13:19:50Z",
            "content": "{\"cpv\": \"90915000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3888059/zakup-kominiarki-psp\", \"buyer\": \"Komenda Wojewódzka PSP w Katowicach\", \"title\": \"Zakup kominiarki PSP\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3888059\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-10T13:19:51Z\"}",
            "content_hash": "4f8f40fa66a33cf3a57ed61ffbc105e947bdde4bca4eacaabd34415595f62939",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "d3d5e62d5c4dd74c4b8661a9e0f1ce6d9f064747306407a5448b18d6513c2caa",
            "actor": null,
            "seal": {
                "id": 18,
                "digest": "adeec00ed6b673509a2a075e675623159dccab6a142d1ac62c122cfe1d16794c",
                "file": "https://tenderiq.pl/rejestr/pieczec-18.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-18.txt.ots",
                "bitcoin_block": 975359
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-10T18:45:33Z",
            "content": "{\"cpv\": \"90915000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3888059/zakup-kominiarki-psp\", \"buyer\": \"Komenda Wojewódzka PSP w Katowicach\", \"title\": \"Zakup kominiarki PSP\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3888059\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-10T13:19:51Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1407415\"}",
            "content_hash": "d92f66b526f7a800ab9f81f89ffc77b6198568c76deed5c1f719cb57b62c37ce",
            "prev_hash": "d3d5e62d5c4dd74c4b8661a9e0f1ce6d9f064747306407a5448b18d6513c2caa",
            "hash": "926d313ab23169496ba276ab8008aa8b7632d2aa36a08ebab4f25fc9c56094e3",
            "actor": null,
            "seal": {
                "id": 18,
                "digest": "adeec00ed6b673509a2a075e675623159dccab6a142d1ac62c122cfe1d16794c",
                "file": "https://tenderiq.pl/rejestr/pieczec-18.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-18.txt.ots",
                "bitcoin_block": 975359
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-10T22:45:23Z",
            "content": "{\"cpv\": \"90915000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3888059/zakup-kominiarki-psp\", \"buyer\": \"Komenda Wojewódzka PSP w Katowicach\", \"title\": \"Zakup kominiarki PSP\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3888059\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-10T13:19:51Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3888059/zakup-kominiarki-psp\"}",
            "content_hash": "247aa364a7a50551fea8f33e86f6ec5ba985a8522a6e5fbdca28515f0e85c830",
            "prev_hash": "926d313ab23169496ba276ab8008aa8b7632d2aa36a08ebab4f25fc9c56094e3",
            "hash": "3b7e780ca95bbd885473b8ca1d153a0061dcb7a604d32ca454489364b85bb370",
            "actor": null,
            "seal": null
        }
    ]
}