{
    "tender_id": 4121313,
    "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": "2026-10-30T10:12:48Z",
            "content": "{\"cpv\": \"42122130\", \"url\": \"https://swoz.tauron.pl/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=13127695\", \"buyer\": \"TAURON Polska Energia S.A.\", \"title\": \"Dostawa: 4 szt. WIRNIK 151-401 POMPA 100KCZ 90\", \"source\": \"tauron_swoz_erfx\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"13127695\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T08:30:00Z\"}",
            "content_hash": "3d957e1cc27c5aa896204656aa22bd38aa21fbff1b04fb2c9482a91b122a93f6",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "440d8e29f7019d7794c781f0f1454629ee0ea81e9d6860b00f79bcb5dd01a587",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-31T10:46:09Z",
            "content": "{\"cpv\": \"42122130\", \"url\": \"https://swoz.tauron.pl/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=13127695\", \"buyer\": \"TAURON Polska Energia S.A.\", \"title\": \"Dostawa: 4 szt. WIRNIK 151-401 POMPA 100KCZ 90\", \"source\": \"tauron_swoz_erfx\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"13127695\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T08:30:00Z\", \"procedure_url\": \"https://swoz.tauron.pl/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=13127695\"}",
            "content_hash": "aab72ec5214469e4d86a1251ba051fbce4e80a830f2ab3f7870da76e2fe5df11",
            "prev_hash": "440d8e29f7019d7794c781f0f1454629ee0ea81e9d6860b00f79bcb5dd01a587",
            "hash": "908b72a279be4126e678994f1c444941f00c695cfd0d0786345510587cc3754a",
            "actor": null,
            "seal": null
        }
    ]
}