{
    "tender_id": 3058400,
    "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"79340000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/736851-2026\", \"buyer\": \"Media College\", \"title\": \"Niderlandy – Usługi reklamowe i marketingowe – Mediabureau\", \"source\": \"ted_nld\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"NL32B, NLD, NL32B, NLD\", \"source_id\": \"736851-2026\", \"deadline_at\": \"2026-12-03T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-23T02:00:00Z\"}",
            "content_hash": "ebbac01086f61337b3223bfff5909224a0af80533138e894b2f22d80565204b3",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "96e768470dabb14e6fc9fc7f6f191a9f966737e614978a6059136b74047fd9d0",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-24T21:20:26Z",
            "content": "{\"cpv\": \"79340000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/736851-2026\", \"buyer\": \"Media College\", \"title\": \"Niderlandy – Usługi reklamowe i marketingowe – Biuro mediowe\", \"source\": \"ted_nld\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"NL32B, NLD, NL32B, NLD\", \"source_id\": \"736851-2026\", \"deadline_at\": \"2026-12-03T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-23T02:00:00Z\"}",
            "content_hash": "9936e5be3c5f808ce7db50bedee1cbd20d5d1199ce3089ec383bb244ddaa9da0",
            "prev_hash": "96e768470dabb14e6fc9fc7f6f191a9f966737e614978a6059136b74047fd9d0",
            "hash": "b0ac7a8487db227e19b52c13bbb3edada588c2cc83972159cfc9700cd26675f7",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        }
    ]
}