{
    "tender_id": 4713258,
    "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": "2026-11-02T05:56:50Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/757075-2026\", \"buyer\": \"SIM ŚLĄSK SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ\", \"title\": \"Polska – Roboty budowlane – Budowa dwóch budynków mieszkalnych wielorodzinnych wraz z infrastrukturą w Zabrzu przy ul. Modrzewiowej (działka ew. nr 3936/65)\", \"region\": \"slaskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"45111200\", \"45262311\", \"45262310\", \"45320000\", \"45262400\", \"45262500\", \"45261210\", \"45443000\", \"45261000\", \"45321000\", \"45410000\", \"45442100\", \"45300000\", \"45330000\", \"45310000\", \"45311000\", \"45312000\", \"45314000\", \"45316000\", \"45317300\", \"45317000\", \"45421100\", \"45233250\", \"45331100\", \"45331210\", \"45331200\", \"39713410\", \"09330000\", \"09331200\"], \"location\": \"PL229, POL, PL229, POL\", \"buyer_nip\": \"6272772211\", \"source_id\": \"757075-2026\", \"deadline_at\": \"2026-12-04T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\"}",
            "content_hash": "0224db3f5530d99588b4c9f2d994effda59eaf48a726c2443fe83865e89834ac",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "34383bab72fd4f03f502592718124731862e3a2fe01a3c04ede29ce5da484d79",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-02T20:45:34Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/757075-2026\", \"buyer\": \"SIM ŚLĄSK SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ\", \"title\": \"Polska – Roboty budowlane – Budowa dwóch budynków mieszkalnych wielorodzinnych wraz z infrastrukturą w Zabrzu przy ul. Modrzewiowej (działka ew. nr 3936/65)\", \"region\": \"slaskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"45111200\", \"45262311\", \"45262310\", \"45320000\", \"45262400\", \"45262500\", \"45261210\", \"45443000\", \"45261000\", \"45321000\", \"45410000\", \"45442100\", \"45300000\", \"45330000\", \"45310000\", \"45311000\", \"45312000\", \"45314000\", \"45316000\", \"45317300\", \"45317000\", \"45421100\", \"45233250\", \"45331100\", \"45331210\", \"45331200\", \"39713410\", \"09330000\", \"09331200\"], \"location\": \"PL229, POL, PL229, POL\", \"buyer_nip\": \"6272772211\", \"source_id\": \"757075-2026\", \"deadline_at\": \"2026-12-04T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1381470\"}",
            "content_hash": "671dee0b784f8c617ceea6f4fcfc66f344e537aba7cc3a6cf81d78c93433dc2a",
            "prev_hash": "34383bab72fd4f03f502592718124731862e3a2fe01a3c04ede29ce5da484d79",
            "hash": "61a97fb181f447bb069494e5d663f414d44575769b0b1b1cfb2b96836cc0dde3",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": null
            }
        }
    ]
}