{
    "tender_id": 4222425,
    "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": "2026-10-30T21:15:37Z",
            "content": "{\"cpv\": \"79111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401405\", \"buyer\": \"Międzynarodowy Instytut Mechanizmów i Maszyn Molekularnych\", \"title\": \"165/10/2026 Ogłoszenie o udzielanym zamówieniu z dziedziny nauki 165/10/2026\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401405\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:45:00Z\", \"notice_number\": \"1401405\"}",
            "content_hash": "d6be6b4aa1cad40db07075db265318f9ab5e40d3a9533a8d25f3c7391f4be067",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "f70c967e13b2d10b4d8d673a33f26fcc27ee232f0691c4e4d22b8c57198d03d8",
            "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": "2026-10-30T21:45:30Z",
            "content": "{\"cpv\": \"79111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401405\", \"buyer\": \"Międzynarodowy Instytut Mechanizmów i Maszyn Molekularnych\", \"title\": \"165/10/2026 Ogłoszenie o udzielanym zamówieniu z dziedziny nauki 165/10/2026\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401405\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:45:00Z\", \"notice_number\": \"1401405\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401527\"}",
            "content_hash": "76d8fa763819d66978dd7032d202c1f097660471e85ab5ed9f71e4318449910c",
            "prev_hash": "f70c967e13b2d10b4d8d673a33f26fcc27ee232f0691c4e4d22b8c57198d03d8",
            "hash": "f14c82e643ef676d8f2f052be0716d346ad2328eb66a07b7c0c68ecdae083a5b",
            "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
            }
        }
    ]
}