{
    "tender_id": 4016180,
    "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": "2026-10-29T19:07:53Z",
            "content": "{\"cpv\": \"35421000\", \"url\": \"https://platformazakupowa.pl/transakcja/1399784\", \"buyer\": \"4 Regionalna Baza Logistyczna\", \"title\": \"TECH/277/295/2026 Zakup opasek krawędziowych do hełmu wojskowego wz. 2005\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399784\", \"deadline_at\": \"2026-11-02T11:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:18:00Z\", \"notice_number\": \"1399784\"}",
            "content_hash": "46829a8dadd06c917ea7b84d4ec429776b118cf09914479277a589c29f30b46d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "69b9cee73218ac8b3c287fc37dbb4a4e4c91a9ac1790a1c92d1ebfd88fcba8a7",
            "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
            }
        }
    ]
}