{
    "tender_id": 4755404,
    "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": "2026-11-02T09:58:06Z",
            "content": "{\"cpv\": \"44163000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128139\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA ŁUKÓW, RUR, TULEI ORAZ KOŁNIERZY SIMONA\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128139\", \"deadline_at\": \"2026-11-05T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-02T09:48:00Z\"}",
            "content_hash": "049c52f816bb25b1826fd648c1488e26157d2111981dc2adbdff5cb3fe3ac58f",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2911459d2dc58e53d14d742e53a4ec98d5e2495c3ffa76841eeacc33276c7763",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-02T13:45:38Z",
            "content": "{\"cpv\": \"44163000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128139\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA ŁUKÓW, RUR, TULEI ORAZ KOŁNIERZY SIMONA\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"128139\", \"deadline_at\": \"2026-11-05T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-02T09:48:00Z\", \"procedure_url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=128139\"}",
            "content_hash": "a65942746d2cf5484680180ce4160798edb4ce11e60ef75af15af28268fa6393",
            "prev_hash": "2911459d2dc58e53d14d742e53a4ec98d5e2495c3ffa76841eeacc33276c7763",
            "hash": "57616778fb2cd63633866f4d20d66fa72b5584b9aee035298b52805e41bb3202",
            "actor": null,
            "seal": null
        }
    ]
}