{
    "tender_id": 6824559,
    "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": "2026-11-12T10:39:45Z",
            "content": "{\"cpv\": \"33195000\", \"url\": \"https://platformazakupowa.pl/transakcja/1408217\", \"buyer\": \"COPERNICUS Podmiot Leczniczy Sp. z o.o.\", \"title\": \"Czujnikjednorazowy Quick Connect SpO2\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1408217\", \"deadline_at\": \"2026-11-16T09:14:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-12T09:14:00Z\", \"notice_number\": \"1408217\"}",
            "content_hash": "3465b76c6933422727bb7efdfb1adb51cd78683fe88837b9f2ce97ff03d19422",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "e4bec760097695976bf852efc0a7ff5c93d217572a37222b41d8fb625e8c2a44",
            "actor": null,
            "seal": {
                "id": 20,
                "digest": "b2fd6447da2d3f3e4b1804384291a598bc4e869f37e35449b20c1a3b8e7b3920",
                "file": "https://tenderiq.pl/rejestr/pieczec-20.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-20.txt.ots",
                "bitcoin_block": 975620
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-12T11:45:41Z",
            "content": "{\"cpv\": \"33195000\", \"url\": \"https://platformazakupowa.pl/transakcja/1408217\", \"buyer\": \"COPERNICUS Podmiot Leczniczy Sp. z o.o.\", \"title\": \"Czujnikjednorazowy Quick Connect SpO2\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1408217\", \"deadline_at\": \"2026-11-16T09:14:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-12T09:14:00Z\", \"notice_number\": \"1408217\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1408217\"}",
            "content_hash": "9bf6dde0bb61ae6c418e5e387c09b99db017ccac8334a19ef672864cce38dbeb",
            "prev_hash": "e4bec760097695976bf852efc0a7ff5c93d217572a37222b41d8fb625e8c2a44",
            "hash": "bae694cd6709b053979ea3f95faf2da342fd911139febd2571cf9ba793641807",
            "actor": null,
            "seal": {
                "id": 20,
                "digest": "b2fd6447da2d3f3e4b1804384291a598bc4e869f37e35449b20c1a3b8e7b3920",
                "file": "https://tenderiq.pl/rejestr/pieczec-20.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-20.txt.ots",
                "bitcoin_block": 975620
            }
        }
    ]
}