{
    "tender_id": 4814382,
    "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": "2026-11-02T19:37:58Z",
            "content": "{\"cpv\": \"18110000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402291\", \"buyer\": \"Komunalne Przedsiębiorstwo Wodociągów i Kanalizacji Spółka z o.o. w Nakle nad Notecią\", \"title\": \"U1/2/11/2026 Sukcesywne dostawy odzieży i artykułów BHP dla pracowników KPWiK w Nakle nad Notecią\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402291\", \"deadline_at\": \"2026-11-13T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T12:08:03Z\", \"notice_number\": \"1402291\"}",
            "content_hash": "bbada9d566bad4b2ca3a41f40d3c03c333c922c3b2ad1c92213aefedbd1895dc",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "c58e4827dd6d77582dbe96ddc99ba17480fd45e8885ae0261c8f863013a3ef27",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        }
    ]
}