{
    "tender_id": 3554968,
    "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": "2026-10-27T11:14:47Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/741321-2026\", \"buyer\": \"Nadleśnictwo Przedborów\", \"title\": \"Polska – Usługi leśnictwa – Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Przedborów w roku 2027 r.\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"77210000\", \"77211000\", \"77211100\", \"77211200\", \"77211300\", \"77211400\", \"77211500\", \"77231000\", \"77230000\", \"77231200\", \"77231600\", \"77211600\"], \"location\": \"PL416, POL, PL416, PL416, PL416, PL416, PL416, PL416, PL416, PL416, PL416, POL, POL, POL, POL, POL, POL, POL, POL, POL\", \"buyer_nip\": \"6220008998\", \"source_id\": \"741321-2026\", \"deadline_at\": \"2026-11-24T07:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\"}",
            "content_hash": "72b2c8c064c4fd3a4c56d25d6543936742a828a37c19af1f6e7bb47fb3c185c6",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "28798dd05bbbf4f408b7d23507ce14099f5b18c73f4280eae92a3cb95f3fdfc5",
            "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": "2026-10-28T05:45:42Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/741321-2026\", \"buyer\": \"Nadleśnictwo Przedborów\", \"title\": \"Polska – Usługi leśnictwa – Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Przedborów w roku 2027 r.\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"77210000\", \"77211000\", \"77211100\", \"77211200\", \"77211300\", \"77211400\", \"77211500\", \"77231000\", \"77230000\", \"77231200\", \"77231600\", \"77211600\"], \"location\": \"PL416, POL, PL416, PL416, PL416, PL416, PL416, PL416, PL416, PL416, PL416, POL, POL, POL, POL, POL, POL, POL, POL, POL\", \"buyer_nip\": \"6220008998\", \"source_id\": \"741321-2026\", \"deadline_at\": \"2026-11-24T07:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/741321-2026\"}",
            "content_hash": "42ce743903ce18962a1f7c8fd96779c686973819cd0fcd1a02cafb6c156c777a",
            "prev_hash": "28798dd05bbbf4f408b7d23507ce14099f5b18c73f4280eae92a3cb95f3fdfc5",
            "hash": "22c852766d67ade3760cddfa2905e7ed14a919f23c331284e659988aa885fc44",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        }
    ]
}