{
    "tender_id": 3361678,
    "check": {
        "ok": true,
        "versions": 1,
        "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": "2026-10-26T09:40:07Z",
            "content": "{\"cpv\": \"71322000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/739097-2026\", \"buyer\": \"Správa železnic, státní organizace\", \"title\": \"Czechy – Usługi inżynierii projektowej w zakresie inżynierii lądowej i wodnej – Żelezniowy węzeł Brno, etap Heršpice i Osobni peron\", \"source\": \"ted_cze\", \"status\": \"active\", \"cpv_more\": [\"71311230\", \"71335000\", \"71351730\"], \"location\": \"CZ010, CZE, CZ010, CZE\", \"source_id\": \"739097-2026\", \"deadline_at\": \"2026-12-11T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "e4c6c5cedf94fe9d49b7fbd3e81afd46d45c171efe964be7d4ad694393dae0bb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "e5b0cc35d341f462cbd0bd8c56e8a5f92962b371f968604a04e1aa358197dfa5",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        }
    ]
}