{
    "tender_id": 4753986,
    "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": "2026-11-02T09:50:43Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401811\", \"buyer\": \"Miasto Zabrze\", \"title\": \"Prowadzenie gospodarki leśnej lasów komunalnych w Zabrzu w roku 2027\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401811\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T08:09:00Z\", \"notice_number\": \"1401811\"}",
            "content_hash": "d4389ec3c71f9b3c57a09a356a0c1665d0e998ef1cfbc9ada4c6341eb7df1537",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "c5d54f19997dceb9eeb1e50b9c520e4d3199d8ead4914ae9f727910fe45091c8",
            "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": 974314
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-02T13:46:00Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401811\", \"buyer\": \"Miasto Zabrze\", \"title\": \"Prowadzenie gospodarki leśnej lasów komunalnych w Zabrzu w roku 2027\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401811\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T08:09:00Z\", \"notice_number\": \"1401811\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401811\"}",
            "content_hash": "b3afbdf74fb281f2c73b6f323e7b88298b4be5e55573afd65c4b69aa78d6626a",
            "prev_hash": "c5d54f19997dceb9eeb1e50b9c520e4d3199d8ead4914ae9f727910fe45091c8",
            "hash": "b20b9a9bbe39a39170a53a9bea8f225da3c4be211244fd0c98a529f0f2da7f48",
            "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": 974314
            }
        }
    ]
}