{
    "tender_id": 3937425,
    "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": "2026-10-29T12:54:08Z",
            "content": "{\"url\": \"https://zakupy.grupapgz.pl/open-preview-auction.html/13696/zakup-aluminium-25\", \"buyer\": \"POLSKA GRUPA ZBROJENIOWA S.A.\", \"title\": \"Zakup aluminium\", \"source\": \"pgz_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"13696\", \"deadline_at\": \"2026-11-05T15:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:00:00Z\"}",
            "content_hash": "36558ab4248fd0e44426a70370066fcc8373b093f8512c5990251587a2c0c3e9",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "d0fddc0616501e36754799b2c434a3aa81ccbe461930721b01091e745d056859",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        }
    ]
}