{
    "tender_id": 3554990,
    "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": "2026-10-27T11:14:54Z",
            "content": "{\"cpv\": \"34223000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/741680-2026\", \"buyer\": \"Gmina Wałbrzych - Miasto na Prawach Powiatu\", \"title\": \"Polska – Przyczepy i naczepy – „Zakup ciągnika siodłowego wraz z naczepą niskopodwoziową - 1 szt. na potrzeby Ochrony Ludności i Obrony Cywilnej” (II)\", \"region\": \"dolnoslaskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"16700000\"], \"location\": \"PL517, POL, PL517, POL\", \"buyer_nip\": \"8862584003\", \"source_id\": \"741680-2026\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\"}",
            "content_hash": "e6f594300008b505db5738a7e39506ec93e23b2c9abddb254464f4a8d74faf48",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "1e83cc4793df7c3e5c5318cfa050adcf4e65f42672d5d55447becf04a68919e8",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-27T19:35:44Z",
            "content": "{\"cpv\": \"34223000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/741680-2026\", \"buyer\": \"Gmina Wałbrzych - Miasto na Prawach Powiatu\", \"title\": \"Polska – Przyczepy i naczepy – „Zakup ciągnika siodłowego wraz z naczepą niskopodwoziową - 1 szt. na potrzeby Ochrony Ludności i Obrony Cywilnej” (II)\", \"region\": \"dolnoslaskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"16700000\"], \"location\": \"PL517, POL, PL517, POL\", \"buyer_nip\": \"8862584003\", \"source_id\": \"741680-2026\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\", \"procedure_url\": \"https://gminawalbrzych.logintrade.net/zapytania_email,243687,dc6fe982afb0a3ed7080797d8adcaea4.html\"}",
            "content_hash": "279ea6bca3e79cf3fb480e620aea292a9cd358521e1affc469ce4256f56e155a",
            "prev_hash": "1e83cc4793df7c3e5c5318cfa050adcf4e65f42672d5d55447becf04a68919e8",
            "hash": "895641d22fa7e8ca06918a344b945440d09453574a16538db1cfc080a43b8da2",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}