{
    "tender_id": 3921627,
    "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": "2026-10-29T08:55:53Z",
            "content": "{\"cpv\": \"50000000\", \"url\": \"https://alchemia.logintrade.net/portal,szczegolyZapytaniaOfertowe,1a0296ac87c0449f9f4d4e9bf37284e0.html\", \"buyer\": \"Alchemia S.A. Oddział Chorzów Batory\", \"title\": \"HBT/48578 - Naprawa urządzeń elektrycznych\", \"region\": \"mazowieckie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"mazowieckie\", \"source_id\": \"alchemia-1a0296ac87c0449f9f4d4e9bf37284e0\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T06:52:00Z\"}",
            "content_hash": "fb236e75f5977796b43b00cdf9927b57e6f094741df885bb1d082ec6c5601237",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "eb12dc9f4c961b9d439456e2e0ed6da33bea2d4b08acaccd90bec305167141ce",
            "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": "2026-10-30T00:33:30Z",
            "content": "{\"cpv\": \"50000000\", \"url\": \"https://alchemia.logintrade.net/portal,szczegolyZapytaniaOfertowe,1a0296ac87c0449f9f4d4e9bf37284e0.html\", \"buyer\": \"Alchemia S.A. Oddział Chorzów Batory\", \"title\": \"HBT/48578 - Naprawa urządzeń elektrycznych\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"alchemia-1a0296ac87c0449f9f4d4e9bf37284e0\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T10:06:00Z\"}",
            "content_hash": "46a49c7916c80fdbe65c63f1221473cd1e4a051094271fe5e188b75dccd2fda4",
            "prev_hash": "eb12dc9f4c961b9d439456e2e0ed6da33bea2d4b08acaccd90bec305167141ce",
            "hash": "350e43d886ab41604e14618a045f7666bd4c5c73695d014bec3b6af2a584ae67",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-10-30T01:45:39Z",
            "content": "{\"cpv\": \"50000000\", \"url\": \"https://alchemia.logintrade.net/portal,szczegolyZapytaniaOfertowe,1a0296ac87c0449f9f4d4e9bf37284e0.html\", \"buyer\": \"Alchemia S.A. Oddział Chorzów Batory\", \"title\": \"HBT/48578 - Naprawa urządzeń elektrycznych\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"alchemia-1a0296ac87c0449f9f4d4e9bf37284e0\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T10:06:00Z\", \"procedure_url\": \"https://alchemia.logintrade.net/portal,szczegolyZapytaniaOfertowe,1a0296ac87c0449f9f4d4e9bf37284e0.html\"}",
            "content_hash": "24aca3a9c817ff96379e29b705a84ef6547fe6c002bf6fc37ecfac0b22db99aa",
            "prev_hash": "350e43d886ab41604e14618a045f7666bd4c5c73695d014bec3b6af2a584ae67",
            "hash": "fa92404d812fb04387a627e46016150162201bc3821dd249401c2550a3351416",
            "actor": null,
            "seal": null
        }
    ]
}