{
    "tender_id": 5196604,
    "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": "2026-11-04T12:53:52Z",
            "content": "{\"cpv\": \"34130000\", \"url\": \"https://platformazakupowa.pl/transakcja/1403881\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"Skrzynie transportowe\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1403881\", \"deadline_at\": \"2026-11-10T08:20:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T11:22:00Z\", \"notice_number\": \"1403881\"}",
            "content_hash": "123af0109fb823cbcd258e7e3ce467b4a37121df957064bfb98e6fc0eaa180cb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "81e95d94b1ee8361cf89f2075d3aa675ca3d21d529a122c41af5126b41460d37",
            "actor": null,
            "seal": null
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T16:45:45Z",
            "content": "{\"cpv\": \"34130000\", \"url\": \"https://platformazakupowa.pl/transakcja/1403881\", \"buyer\": \"31 Baza Lotnictwa Taktycznego w Poznaniu\", \"title\": \"Skrzynie transportowe\", \"region\": \"wielkopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1403881\", \"deadline_at\": \"2026-11-10T08:20:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-04T11:22:00Z\", \"notice_number\": \"1403881\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1403881\"}",
            "content_hash": "291f73b1a7507ffe5ec0a9805debc83d5a699c94afe93fd1560294ab4f0d84a9",
            "prev_hash": "81e95d94b1ee8361cf89f2075d3aa675ca3d21d529a122c41af5126b41460d37",
            "hash": "17fb5aa310243774f3649f3ff96924787c34ceac9e5ab383871f652a1bf1fe46",
            "actor": null,
            "seal": null
        }
    ]
}