{
    "tender_id": 4954619,
    "check": {
        "ok": true,
        "versions": 4,
        "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": "2026-11-03T07:54:31Z",
            "content": "{\"cpv\": \"30199750\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3868661/wykonanie-i-dostawa-kalendarzy-na-rok-2027\", \"buyer\": \"Miasto Otwock\", \"title\": \"Wykonanie i dostawa kalendarzy na rok 2027\", \"region\": \"mazowieckie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3868661\", \"deadline_at\": \"2026-11-06T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T07:54:31Z\"}",
            "content_hash": "0376e4ef976f554fe8599b5c96c0a6ea79540eff693ace7ad275888af82abedb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "fdbe9753fae63a9300432f234a41239ca9b2e94259ec7089d4a955f6ceb2bf86",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T11:45:23Z",
            "content": "{\"cpv\": \"30199750\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3868661/wykonanie-i-dostawa-kalendarzy-na-rok-2027\", \"buyer\": \"Miasto Otwock\", \"title\": \"Wykonanie i dostawa kalendarzy na rok 2027\", \"region\": \"mazowieckie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3868661\", \"deadline_at\": \"2026-11-06T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T07:54:31Z\", \"procedure_url\": \"https://otwock.ezamawiajacy.pl/pn/otwock/demand/notice/public/241696/details\"}",
            "content_hash": "79ce905131612c906214883324c0242d94de59c3ca68d1f94e12b9b150d68fee",
            "prev_hash": "fdbe9753fae63a9300432f234a41239ca9b2e94259ec7089d4a955f6ceb2bf86",
            "hash": "c50080a10a9f758b8753f4bc9039cb35555cd3a929c993e5cb307ecc4f7b3353",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-11-03T13:45:34Z",
            "content": "{\"cpv\": \"30199750\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3868661/wykonanie-i-dostawa-kalendarzy-na-rok-2027\", \"buyer\": \"Miasto Otwock\", \"title\": \"Wykonanie i dostawa kalendarzy na rok 2027\", \"region\": \"mazowieckie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3868661\", \"deadline_at\": \"2026-11-06T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T07:54:31Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3868661/wykonanie-i-dostawa-kalendarzy-na-rok-2027\"}",
            "content_hash": "ada14c4d60b813bd88f4df47d6957033c2965b8984acc5385935f16c15f6127e",
            "prev_hash": "c50080a10a9f758b8753f4bc9039cb35555cd3a929c993e5cb307ecc4f7b3353",
            "hash": "61ef6e089ba3dfc78c4167272a47eaf24504eb6e6b323155c690e4f90fb275c1",
            "actor": null,
            "seal": null
        },
        {
            "version": 4,
            "recorded_at": "2026-11-03T15:33:22Z",
            "content": "{\"cpv\": \"30199750\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3868661/wykonanie-i-dostawa-kalendarzy-na-rok-2027\", \"buyer\": \"Miasto Otwock\", \"title\": \"Wykonanie i dostawa kalendarzy na rok 2027\", \"region\": \"mazowieckie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3868661\", \"deadline_at\": \"2026-11-06T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T07:54:31Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3851050/wykonanie-i-dostawa-kalendarzy-na-2027-rok\"}",
            "content_hash": "52ebe7dd206840c931284a9d9de91ba46a873b03b9696bb199203f3d6f84d964",
            "prev_hash": "61ef6e089ba3dfc78c4167272a47eaf24504eb6e6b323155c690e4f90fb275c1",
            "hash": "1d61b934c68327e05c33ddc8166e883b667896999ba850fa466347b065f4fe06",
            "actor": null,
            "seal": null
        }
    ]
}