{
    "tender_id": 3942686,
    "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": "2026-10-29T13:50:09Z",
            "content": "{\"cpv\": \"18100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1400664\", \"buyer\": \"Zakład Wodociągów i Kanalizacji Sp. z o. o. Grodzisk Mazowiecki\", \"title\": \"25/DOO/26 - Dostawa odzieży roboczej\", \"region\": \"mazowieckie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400664\", \"deadline_at\": \"2026-11-02T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T12:22:00Z\", \"notice_number\": \"1400664\"}",
            "content_hash": "ea285aa4f7bbb8e25425fecd24f65feae3af7a7776753383ad0644544bb77963",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "95901548a4f2930d01f2810619772675572631f7bd1370e42af5ecbda24524b4",
            "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": "2026-10-29T19:46:04Z",
            "content": "{\"cpv\": \"18100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1400664\", \"buyer\": \"Zakład Wodociągów i Kanalizacji Sp. z o. o. Grodzisk Mazowiecki\", \"title\": \"25/DOO/26 - Dostawa odzieży roboczej\", \"region\": \"mazowieckie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400664\", \"deadline_at\": \"2026-11-02T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T12:22:00Z\", \"notice_number\": \"1400664\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1400664\"}",
            "content_hash": "bd6aa4c348ee9cfab9b6320c8f5c7866ca35cab3c9ad708dd409c34e9e0c2369",
            "prev_hash": "95901548a4f2930d01f2810619772675572631f7bd1370e42af5ecbda24524b4",
            "hash": "3bf1c0243283f4c38ab78ad66f054beb05913a13fed30c2e30a44958f5e75e62",
            "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
            }
        }
    ]
}