{
    "tender_id": 5413982,
    "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": "2026-11-05T12:34:58Z",
            "content": "{\"cpv\": \"34631000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=129110\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA CYLINDRÓW SIŁOWNIKA\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"129110\", \"deadline_at\": \"2026-11-10T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-05T12:32:00Z\"}",
            "content_hash": "dd127f6434fff186f0c01bbb39e7f1df1bb0baa94bb4af563c4d3b921e81c16d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2bfebc92f86c3e8ae8f61f0031cb6c6dd7a5190bbfdae1faebdb5e68d2dbc9a1",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-05T20:46:02Z",
            "content": "{\"cpv\": \"34631000\", \"url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=129110\", \"buyer\": \"KGHM Polska Miedź S.A. (Mercus Logistyka)\", \"title\": \"DOSTAWA CYLINDRÓW SIŁOWNIKA\", \"region\": \"dolnoslaskie\", \"source\": \"kghm_erfx\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polkowice\", \"source_id\": \"129110\", \"deadline_at\": \"2026-11-10T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-05T12:32:00Z\", \"procedure_url\": \"https://oferty.kghm.com/platform/application?MP_module=outErfx&MP_action=supplierStatus&iRfxRound=129110\"}",
            "content_hash": "1e2f45235861254e42ea4f911bb59a9a1fce1fc2a22ea0984aa69451d826d1ba",
            "prev_hash": "2bfebc92f86c3e8ae8f61f0031cb6c6dd7a5190bbfdae1faebdb5e68d2dbc9a1",
            "hash": "e6e75c1c1f66f0fcb1169ca18601d11f99cfffe083158ff51ccf2bc6b5365dd9",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        }
    ]
}