{
    "tender_id": 4072987,
    "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": "2026-10-30T03:36:22Z",
            "content": "{\"cpv\": \"09134100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/754481-2026\", \"buyer\": \"Kaliskie Linie Autobusowe Spółka z ograniczoną odpowiedzialnością\", \"title\": \"Polska – Olej napędowy – SUKCESYWNA DOSTAWA OLEJU NAPĘDOWEGO DO STACJI PALIW KALISKICH LINII AUTOBUSOWYCH SP. Z O.O.\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL416, POL, PL416, POL\", \"buyer_nip\": \"6180033902\", \"source_id\": \"754481-2026\", \"deadline_at\": \"2026-11-16T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-30T01:00:00Z\"}",
            "content_hash": "e0fd70036c7b51ccc1f8048bb8a7720df6133b149e6b53ee5c7f9dfb9c5169ae",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "248f446001ad18010f8b869bb2afb4003a4f6491980b4c7ac3c7bfe4da94e300",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T13:45:37Z",
            "content": "{\"cpv\": \"09134100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/754481-2026\", \"buyer\": \"Kaliskie Linie Autobusowe Spółka z ograniczoną odpowiedzialnością\", \"title\": \"Polska – Olej napędowy – SUKCESYWNA DOSTAWA OLEJU NAPĘDOWEGO DO STACJI PALIW KALISKICH LINII AUTOBUSOWYCH SP. Z O.O.\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL416, POL, PL416, POL\", \"buyer_nip\": \"6180033902\", \"source_id\": \"754481-2026\", \"deadline_at\": \"2026-11-16T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-30T01:00:00Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/754481-2026\"}",
            "content_hash": "e6348dce295b8ddb23b25dca5f9b251e32e02d1d6e75617a65d58d2d458290e0",
            "prev_hash": "248f446001ad18010f8b869bb2afb4003a4f6491980b4c7ac3c7bfe4da94e300",
            "hash": "8a022e6535c9a1de85c49681f68c2bf84b1cb698dd5b3c8102b8bd84dca6f35f",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        }
    ]
}