{
    "tender_id": 5141938,
    "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": "2026-11-04T07:12:23Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/764512-2026\", \"buyer\": \"Skarb Państwa - Państwowe Gospodarstwo Leśne Lasy Państwowe Nadleśnictwo Człuchów\", \"title\": \"Polska – Usługi leśnictwa – Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Człuchów w roku 2027\", \"region\": \"pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"77210000\", \"77211000\", \"77211100\", \"77211200\", \"77211300\", \"77211400\", \"77211500\", \"77211600\", \"77220000\", \"77230000\", \"77231000\", \"77231200\", \"77231600\", \"77231700\", \"75251120\", \"45342000\", \"60100000\", \"90511300\", \"90511000\", \"45111300\", \"90620000\"], \"location\": \"PL637, POL, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL\", \"buyer_nip\": \"8430003063\", \"source_id\": \"764512-2026\", \"deadline_at\": \"2026-11-24T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-04T01:00:00Z\"}",
            "content_hash": "3790b6e86bd9a05dfe96ea36291989a3aea3eeb29688ecaa42ee035fb60c4214",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3f0d471433e2bb4da9286a36c2bdd6ccecf94df98f7119edc0093eb71bfe9d29",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-05T06:45:53Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/764512-2026\", \"buyer\": \"Skarb Państwa - Państwowe Gospodarstwo Leśne Lasy Państwowe Nadleśnictwo Człuchów\", \"title\": \"Polska – Usługi leśnictwa – Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Człuchów w roku 2027\", \"region\": \"pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"77210000\", \"77211000\", \"77211100\", \"77211200\", \"77211300\", \"77211400\", \"77211500\", \"77211600\", \"77220000\", \"77230000\", \"77231000\", \"77231200\", \"77231600\", \"77231700\", \"75251120\", \"45342000\", \"60100000\", \"90511300\", \"90511000\", \"45111300\", \"90620000\"], \"location\": \"PL637, POL, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, PL637, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL, POL\", \"buyer_nip\": \"8430003063\", \"source_id\": \"764512-2026\", \"deadline_at\": \"2026-11-24T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-04T01:00:00Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/764512-2026\"}",
            "content_hash": "52e168f7b0f72a974b79354bbf3243af551e5d1994aad8e84d38b9d066fadfee",
            "prev_hash": "3f0d471433e2bb4da9286a36c2bdd6ccecf94df98f7119edc0093eb71bfe9d29",
            "hash": "4f64354099b87ccf3edefb11872f320729e0473b5dbceb44e8aecf9f87fb4c3b",
            "actor": null,
            "seal": null
        }
    ]
}