{
    "tender_id": 3797576,
    "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": "2026-10-28T14:01:21Z",
            "content": "{\"cpv\": \"38540000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=127615\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA : • Czujnik kąta zero do koparki Atlas 1604ZW (6021531/6047674)\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"127615\", \"deadline_at\": \"2026-11-02T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-28T12:23:00Z\"}",
            "content_hash": "f1ad909c708584bede585d0e34df9b59dd3c1370008c48544836686baa27be80",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "fec2f6b304ae5a0f614693306ad2b429dd01bee2a9bce6512a4e2e7254228138",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T17:45:13Z",
            "content": "{\"cpv\": \"38540000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=127615\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA : • Czujnik kąta zero do koparki Atlas 1604ZW (6021531/6047674)\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"127615\", \"deadline_at\": \"2026-11-02T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-28T12:23:00Z\", \"procedure_url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=127615\"}",
            "content_hash": "1e19aecd1f8314ebcef2e3cfe4a210f9403c24dfeadcfb41fa690b333dc5f7b0",
            "prev_hash": "fec2f6b304ae5a0f614693306ad2b429dd01bee2a9bce6512a4e2e7254228138",
            "hash": "4220abfc3a2821b5da4adc595b27bc27b9a4ee29b8ddd9e165ae85daae093421",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        }
    ]
}