{
    "tender_id": 4883139,
    "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": "2026-11-03T01:53:02Z",
            "content": "{\"cpv\": \"39721320\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3867643/system-osuszacza-powietrza-ii86006-3-do-poj-48we-48web-48wed\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"System osuszacza powietrza II86006/3 do poj. 48WE, 48WEb, 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3867643\", \"deadline_at\": \"2026-11-09T11:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T01:53:03Z\"}",
            "content_hash": "7d64ca897faa7ec5a45155913d9398a57bc3498602a78ea30e8ffe5b4276d0b1",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "f98fd446e34d34bc0c727cfe66c98b85f9b29157dd6f5148f7d576d6da21c427",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T02:45:37Z",
            "content": "{\"cpv\": \"39721320\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3867643/system-osuszacza-powietrza-ii86006-3-do-poj-48we-48web-48wed\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"System osuszacza powietrza II86006/3 do poj. 48WE, 48WEb, 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3867643\", \"deadline_at\": \"2026-11-09T11:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T01:53:03Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536548/system-osuszacza-powietrza-ii86006-3-do-poj-48we-48web-48wed\"}",
            "content_hash": "2220cf77a3b0c0ab033fee1c58c09ab18acf142a52c11c81310f7714d5150e19",
            "prev_hash": "f98fd446e34d34bc0c727cfe66c98b85f9b29157dd6f5148f7d576d6da21c427",
            "hash": "2241a9e598c1dd19e6c0080b66cd9cc65030a42ee993024159e6f77de72e9708",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T23:39:42Z",
            "content": "{\"cpv\": \"34631000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3867643/system-osuszacza-powietrza-ii86006-3-do-poj-48we-48web-48wed\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"System osuszacza powietrza II86006/3 do poj. 48WE, 48WEb, 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3867643\", \"deadline_at\": \"2026-11-09T11:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T01:53:03Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536548/system-osuszacza-powietrza-ii86006-3-do-poj-48we-48web-48wed\"}",
            "content_hash": "d6b696072f6993bcc5c8f0f0b829bd161aa3e000d3ededce4c91eeea2bc32f26",
            "prev_hash": "2241a9e598c1dd19e6c0080b66cd9cc65030a42ee993024159e6f77de72e9708",
            "hash": "d8cbf988fa4bac942240a6c9d5020d5c5418e9d5b209982a3113a11cb1556225",
            "actor": null,
            "seal": null
        }
    ]
}