{
    "tender_id": 3977597,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-10-29T15:27:30Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://zdunskawola.ezamawiajacy.pl/pn/zdunskawola/demand/notice/public/241099/details\", \"buyer\": \"Miasto Zduńska Wola\", \"title\": \"Budowa systemu klimatyzacji w budynku nr 5 Urzędu Miasta\", \"region\": \"lodzkie\", \"source\": \"zdunskawola_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241099\", \"deadline_at\": \"2026-11-10T11:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-10-29T13:58:00Z\"}",
            "content_hash": "672fc69c99044760224c4d00ffbd04d28093727b6e52c13c856d2406ab9e6d25",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2139f837c01e3df6c4b91edc61097b56c434397e5c974ad9d4360776e485e85f",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-29T19:46:01Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://zdunskawola.ezamawiajacy.pl/pn/zdunskawola/demand/notice/public/241099/details\", \"buyer\": \"Miasto Zduńska Wola\", \"title\": \"Budowa systemu klimatyzacji w budynku nr 5 Urzędu Miasta\", \"region\": \"lodzkie\", \"source\": \"zdunskawola_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241099\", \"deadline_at\": \"2026-11-10T11:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-10-29T13:58:00Z\", \"procedure_url\": \"https://zdunskawola.ezamawiajacy.pl/pn/zdunskawola/demand/notice/public/241099/details\"}",
            "content_hash": "81b127ba5c46a70ec341cff8421153e2bf145ed378437aa3e7d98691c1a6c13c",
            "prev_hash": "2139f837c01e3df6c4b91edc61097b56c434397e5c974ad9d4360776e485e85f",
            "hash": "089fd8014c833f7f6974b35cb42869b46e997f94661a13b400d25974475a6976",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-03T18:05:51Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://zdunskawola.ezamawiajacy.pl/pn/zdunskawola/demand/notice/public/241099/details\", \"buyer\": \"Miasto Zduńska Wola\", \"title\": \"Budowa systemu klimatyzacji w budynku nr 5 Urzędu Miasta\", \"region\": \"lodzkie\", \"source\": \"zdunskawola_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241099\", \"deadline_at\": \"2026-11-12T11:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-10-29T13:58:00Z\", \"procedure_url\": \"https://zdunskawola.ezamawiajacy.pl/pn/zdunskawola/demand/notice/public/241099/details\"}",
            "content_hash": "f2965655ccd468e45e0a0d70db1a536f2224ddfa5382377d9b957ad811030a71",
            "prev_hash": "089fd8014c833f7f6974b35cb42869b46e997f94661a13b400d25974475a6976",
            "hash": "4ccba13fc692404247598dfd84bae4bcaac9e0082a3ae285853512b142783d4b",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        }
    ]
}