{
    "tender_id": 4990621,
    "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": "2026-11-03T13:08:22Z",
            "content": "{\"cpv\": \"50530000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128639\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA ŁOŻYSK PRODUKCJI SKF\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128639\", \"deadline_at\": \"2026-11-04T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T12:52:00Z\"}",
            "content_hash": "3d8a1e0b516c0b6e4cf04fd9a32fbe853e5dc434a166791b1baf0b0f2d708514",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "5983cba6387627d6509159dd6bb4dce5764143576ac21b0ae7159490ef010860",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T13:45:37Z",
            "content": "{\"cpv\": \"50530000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128639\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA ŁOŻYSK PRODUKCJI SKF\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128639\", \"deadline_at\": \"2026-11-04T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T12:52:00Z\", \"procedure_url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128639\"}",
            "content_hash": "fd230ce62604cef919bec2466280dab29c6b4b00eaeec8034ad2ae3b3f8b6c65",
            "prev_hash": "5983cba6387627d6509159dd6bb4dce5764143576ac21b0ae7159490ef010860",
            "hash": "f73a1efa0fec49e3b53f3963d9c3e44f160c6c50df005d6425351ed12fe76d99",
            "actor": null,
            "seal": null
        }
    ]
}