{
    "tender_id": 5254367,
    "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": "2026-11-04T21:10:15Z",
            "content": "{\"url\": \"https://ezakupy.pkpcargo.com/open-preview-auction.html/105293/zajisteni-ostrahy-5\", \"buyer\": \"PKP CARGO INTERNATIONAL A.S.\", \"title\": \"zajištění ostrahy\", \"source\": \"pkpcargo_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"NA\", \"source_id\": \"105293\", \"deadline_at\": \"2026-11-11T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T07:30:00Z\"}",
            "content_hash": "4457a9ad878ab8034fe807d1c5451c62af0310e9abbe03f941adc764d80b90e4",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "08d931b3ea8454a12d135839498f5a7fc53d2d077f10664fd53a90de9d661882",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-05T06:45:57Z",
            "content": "{\"url\": \"https://ezakupy.pkpcargo.com/open-preview-auction.html/105293/zajisteni-ostrahy-5\", \"buyer\": \"PKP CARGO INTERNATIONAL A.S.\", \"title\": \"zajištění ostrahy\", \"source\": \"pkpcargo_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"NA\", \"source_id\": \"105293\", \"deadline_at\": \"2026-11-11T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T07:30:00Z\", \"procedure_url\": \"https://ezakupy.pkpcargo.com/open-preview-auction.html/105293/zajisteni-ostrahy-5\"}",
            "content_hash": "8c7395c7a7541f31cab18defe3050a6f8bc4aaaeb190b7dc9e373cd94de73447",
            "prev_hash": "08d931b3ea8454a12d135839498f5a7fc53d2d077f10664fd53a90de9d661882",
            "hash": "0e06db593336491327571c92c79eabda8976c12566c5654a1fe727ebad1b0432",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        }
    ]
}