{
    "tender_id": 2780367,
    "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"90630000\", \"url\": \"https://swoz.tauron.pl/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=13127166\", \"buyer\": \"TAURON Polska Energia S.A.\", \"title\": \"Wykonanie operatu przeciwpożarowego, o którym mowa w art. 42 ust. 4b pkt 1 ustawy z dnia 14 grudnia 2012 r. o odpadach\", \"source\": \"tauron_swoz_erfx\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"13127166\", \"deadline_at\": \"2026-10-29T08:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-22T06:15:00Z\", \"procedure_url\": \"https://swoz.tauron.pl/platform/demand/notice/public/13070603/details\"}",
            "content_hash": "d4779ef4cb64e9de171d0b9e4c582b53e671584b14f41c4274dadafa24f3f58d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "e55336ebf33972de61596eacbab8a15ce2ea51a61d5321486618aab1ae2f472c",
            "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
            }
        }
    ]
}