{
    "tender_id": 3942713,
    "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": "2026-10-29T13:50:49Z",
            "content": "{\"cpv\": \"34134000\", \"url\": \"https://platformazakupowa.pl/transakcja/1400734\", \"buyer\": \"Przedsiębiorstwo Wodociągów i Kanalizacji Sp. z o.o. w Rudzie Śląskiej\", \"title\": \"Opona ciężarowa całoroczna\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400734\", \"deadline_at\": \"2026-11-04T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T12:43:00Z\", \"notice_number\": \"1400734\"}",
            "content_hash": "a3df9c14fd6e65451d267b3da6d8dd29865e4aad64723d56479c56584c8176cf",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "ffefa238da438f776148f2957daa09fb60bc5ac050b30099f17da53a8ee1b0ff",
            "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\": \"34134000\", \"url\": \"https://platformazakupowa.pl/transakcja/1400734\", \"buyer\": \"Przedsiębiorstwo Wodociągów i Kanalizacji Sp. z o.o. w Rudzie Śląskiej\", \"title\": \"Opona ciężarowa całoroczna\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1400734\", \"deadline_at\": \"2026-11-04T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T12:43:00Z\", \"notice_number\": \"1400734\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1400734\"}",
            "content_hash": "b225943ab7ea0b3ecccee79a01390692f1afad46972dc991e5f21b002e7b733a",
            "prev_hash": "ffefa238da438f776148f2957daa09fb60bc5ac050b30099f17da53a8ee1b0ff",
            "hash": "22805f0e21c7f70bac72a18f247698687d4482cc94225589ffeed11b9aa15a90",
            "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
            }
        }
    ]
}