{
    "tender_id": 3260282,
    "check": {
        "ok": true,
        "versions": 5,
        "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": "2026-10-25T20:08:01Z",
            "content": "{\"cpv\": \"33185300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\", \"buyer\": \"USK NR 4 W LUBLINIE\", \"title\": \"Dostawa implantów laryngologicznych\", \"region\": \"lubelskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"LUBELSKIE\", \"source_id\": \"531853\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T10:00:00Z\"}",
            "content_hash": "28bdde7508b2744a5a335a653395a077a9c25db14ab922c22f5d761324d5ce58",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3f43e89bcc301e8d3275f151e6f7a8596e9a4d5c3d3414dbc11bd844e95917c0",
            "actor": null,
            "seal": {
                "id": 2,
                "digest": "6af9ff920846d2ed2fae131d9f0f0d3d71bdf63cfd98a8a18b81289d63fe5e04",
                "file": "https://tenderiq.pl/rejestr/pieczec-2.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-2.txt.ots",
                "bitcoin_block": 973147
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-25T23:35:58Z",
            "content": "{\"cpv\": \"33185300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\", \"buyer\": \"USK NR 4 W LUBLINIE\", \"title\": \"Dostawa implantów laryngologicznych\", \"region\": \"lubelskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"LUBELSKIE\", \"source_id\": \"531853\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T10:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\"}",
            "content_hash": "0ee6555bae5502b55d9f282c0e46ebaef4d87f46f4f4f32dfc5ea12110c81547",
            "prev_hash": "3f43e89bcc301e8d3275f151e6f7a8596e9a4d5c3d3414dbc11bd844e95917c0",
            "hash": "b6efbad00b87b8c21992ad7806a7e4d576aafa576628175e1a8bb178691b4b95",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-26T23:35:22Z",
            "content": "{\"cpv\": \"33185300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\", \"buyer\": \"USK NR 4 W LUBLINIE\", \"title\": \"Dostawa implantów laryngologicznych\", \"region\": \"lubelskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"LUBELSKIE\", \"source_id\": \"531853\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T10:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3811515/dostawa-implantow-laryngologicznych\"}",
            "content_hash": "b7cbbc05404e17d5d058d3702014657259ba4ad217aad03964ef8c533faeb5b2",
            "prev_hash": "b6efbad00b87b8c21992ad7806a7e4d576aafa576628175e1a8bb178691b4b95",
            "hash": "1a2f42680708532c8fd34d9ee5f2d56acd60cdf57e4dc147a7b5cb7d3a3c2ce7",
            "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": 4,
            "recorded_at": "2026-10-27T11:33:52Z",
            "content": "{\"cpv\": \"33185300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\", \"buyer\": \"USK NR 4 W LUBLINIE\", \"title\": \"Dostawa implantów laryngologicznych\", \"region\": \"lubelskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"LUBELSKIE\", \"source_id\": \"531853\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T10:00:00Z\", \"procedure_url\": \"https://spsk4lublin.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\"}",
            "content_hash": "c85c5006f924f9c8fb8fe6e569f5f8e78c5fa6c93c9ca56cb32dda32848634aa",
            "prev_hash": "1a2f42680708532c8fd34d9ee5f2d56acd60cdf57e4dc147a7b5cb7d3a3c2ce7",
            "hash": "ca6f51395637a6fd9c2166400417c4db3c4ce98f9dd4cf28227451a88844914a",
            "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": 5,
            "recorded_at": "2026-11-01T20:15:45Z",
            "content": "{\"cpv\": \"33185300\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\", \"buyer\": \"UNIWERSYTECKI SZPITAL KLINICZNY NR 4 W LUBLINIE\", \"title\": \"Dostawa implantów laryngologicznych\", \"region\": \"lubelskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"LUBELSKIE\", \"source_id\": \"531853\", \"deadline_at\": \"2026-11-03T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-01T10:00:00Z\", \"procedure_url\": \"https://spsk4lublin.eb2b.com.pl/open-preview-auction.html/531853/dostawa-implantow-laryngologicznych-2\"}",
            "content_hash": "84df0d1589c63f95432cb47a6ad730f741aa343058dcf580bf139411506190f4",
            "prev_hash": "ca6f51395637a6fd9c2166400417c4db3c4ce98f9dd4cf28227451a88844914a",
            "hash": "bb612e6415246a8444968f9b8577192ed9d914eeb929565302544e5074131c4e",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        }
    ]
}