{
    "tender_id": 5215021,
    "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": "2026-11-04T15:21:50Z",
            "content": "{\"cpv\": \"15880000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128895\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"Dostawa Przekaźników R-2, PS-2 oraz PKU-C1\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128895\", \"deadline_at\": \"2026-11-06T11:58:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T12:38:00Z\"}",
            "content_hash": "27b08eba565af160b2719c31d465545ebbe317ee41fb6f9d8c7b2e547e7603b5",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "a6faf4b74be046e1a1d92db409181c6bf9c8d703e6de4697fc0d4917a7c19c19",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T16:45:47Z",
            "content": "{\"cpv\": \"15880000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128895\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"Dostawa Przekaźników R-2, PS-2 oraz PKU-C1\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128895\", \"deadline_at\": \"2026-11-06T11:58:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T12:38:00Z\", \"procedure_url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128895\"}",
            "content_hash": "24c239cf809a9142c2c67e4a0e09d3d8edd45cf342b254550cd961add2341371",
            "prev_hash": "a6faf4b74be046e1a1d92db409181c6bf9c8d703e6de4697fc0d4917a7c19c19",
            "hash": "973f5a0b4cf38af0839b334dd320dbf336e8142d6cc79a3a7f6f9ca6f8b6810f",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        }
    ]
}