{
    "tender_id": 3798485,
    "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": "2026-10-28T15:09:17Z",
            "content": "{\"cpv\": \"48210000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536083/zapytanie-o-informacje-cenowa-na-dostawe-pantografow-160ec-160ec-z-add-oraz-dsa150-6\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Zapytanie o informację cenową na dostawę pantografów 160EC, 160EC z ADD oraz DSA150.6\", \"region\": \"dolnoslaskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DOLNOŚLĄSKIE\", \"source_id\": \"536083\", \"deadline_at\": \"2026-11-04T12:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:30:00Z\"}",
            "content_hash": "9aa04e2283a33292ba425b14b0fab6dc8739eb269197f9dcca35e4e5e6f3fa90",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3c57fdf3b0ca1fc3c1c08dbfa4f73916533b58f003fb0756550c9425ce0c0a37",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T18:45:18Z",
            "content": "{\"cpv\": \"48210000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536083/zapytanie-o-informacje-cenowa-na-dostawe-pantografow-160ec-160ec-z-add-oraz-dsa150-6\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Zapytanie o informację cenową na dostawę pantografów 160EC, 160EC z ADD oraz DSA150.6\", \"region\": \"dolnoslaskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DOLNOŚLĄSKIE\", \"source_id\": \"536083\", \"deadline_at\": \"2026-11-04T12:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:30:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536083/zapytanie-o-informacje-cenowa-na-dostawe-pantografow-160ec-160ec-z-add-oraz-dsa150-6\"}",
            "content_hash": "cf01bd3b9b2e871b0e0e22e561667d16776fd06b01cf3109750d71a42ac28986",
            "prev_hash": "3c57fdf3b0ca1fc3c1c08dbfa4f73916533b58f003fb0756550c9425ce0c0a37",
            "hash": "ae261a4e47f7a7f05cc1c091e47d6d41bc38cfc2b3a6f349ca87e01cb125f274",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        }
    ]
}