{
    "tender_id": 6178739,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-11-09T18:08:51Z",
            "content": "{\"url\": \"https://umcs.ezamawiajacy.pl/pn/UMCS/demand/notice/public/242917/details\", \"buyer\": \"Uniwersytet Marii Curie-Skłodowskiej w Lublinie\", \"title\": \"Dostawa materiałów laboratoryjnych\", \"region\": \"lubelskie\", \"source\": \"umcs_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242917\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-11-09T13:28:00Z\"}",
            "content_hash": "6e10974e96b7d4bd049754af84483d794a8dd648b0ba6220d063d50b07491f60",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "93f95106f76d912812510c6760945847334166eccfbc237a998b447f5a69c731",
            "actor": null,
            "seal": {
                "id": 17,
                "digest": "ff8cb03aa08e7c772155df1b20fd8d51c1cab7cd026d5e31aa3d74d6ab70c7b2",
                "file": "https://tenderiq.pl/rejestr/pieczec-17.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-17.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-09T18:45:46Z",
            "content": "{\"url\": \"https://umcs.ezamawiajacy.pl/pn/UMCS/demand/notice/public/242917/details\", \"buyer\": \"Uniwersytet Marii Curie-Skłodowskiej w Lublinie\", \"title\": \"Dostawa materiałów laboratoryjnych\", \"region\": \"lubelskie\", \"source\": \"umcs_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242917\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-11-09T13:28:00Z\", \"procedure_url\": \"https://umcs.ezamawiajacy.pl/pn/UMCS/demand/notice/public/242882/details\"}",
            "content_hash": "a319a9ec5d4b056136821525064d82158e0b02946300bcb7f7f442a75f0fbbc9",
            "prev_hash": "93f95106f76d912812510c6760945847334166eccfbc237a998b447f5a69c731",
            "hash": "fc5c4c8701a5f8160d175662c84ceab6a218daa8b27b542c5da4da9201f10cda",
            "actor": null,
            "seal": {
                "id": 17,
                "digest": "ff8cb03aa08e7c772155df1b20fd8d51c1cab7cd026d5e31aa3d74d6ab70c7b2",
                "file": "https://tenderiq.pl/rejestr/pieczec-17.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-17.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-09T19:37:09Z",
            "content": "{\"url\": \"https://umcs.ezamawiajacy.pl/pn/UMCS/demand/notice/public/242917/details\", \"buyer\": \"Uniwersytet Marii Curie-Skłodowskiej w Lublinie\", \"title\": \"Dostawa materiałów laboratoryjnych\", \"region\": \"lubelskie\", \"source\": \"umcs_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242917\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Postępowanie wyłączone z PZP\", \"published_at\": \"2026-11-09T13:28:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3884546/dostawa-materialow-laboratoryjnych\"}",
            "content_hash": "9f92025499557955a00a7735518bb6ba1bb80ff5f783a98318fe519eba7de59d",
            "prev_hash": "fc5c4c8701a5f8160d175662c84ceab6a218daa8b27b542c5da4da9201f10cda",
            "hash": "69d4af07ec58114a7d2f332935d00dff802ab9ce7c36752086267f85ae97125a",
            "actor": null,
            "seal": {
                "id": 17,
                "digest": "ff8cb03aa08e7c772155df1b20fd8d51c1cab7cd026d5e31aa3d74d6ab70c7b2",
                "file": "https://tenderiq.pl/rejestr/pieczec-17.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-17.txt.ots",
                "bitcoin_block": null
            }
        }
    ]
}