{
    "tender_id": 5047096,
    "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": "2026-11-03T20:45:17Z",
            "content": "{\"cpv\": \"30231300\", \"url\": \"https://platformazakupowa.pl/transakcja/1374972\", \"buyer\": \"Politechnika Warszawska\", \"title\": \"SZPiZ.261.18.2026 Dostawa monitorów wielkoformatowych\", \"region\": \"mazowieckie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1374972\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T20:45:17Z\", \"notice_number\": \"1374972\"}",
            "content_hash": "214e37a3c5886e78f6221860b3281252e3dd2c6476758b2c99a71943b3eaa1bc",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "767b55f58cce1d0e68ca20b5f4f84094ff7a837216c48bb07c862bfd22629114",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T21:46:05Z",
            "content": "{\"cpv\": \"30231300\", \"url\": \"https://platformazakupowa.pl/transakcja/1374972\", \"buyer\": \"Politechnika Warszawska\", \"title\": \"SZPiZ.261.18.2026 Dostawa monitorów wielkoformatowych\", \"region\": \"mazowieckie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1374972\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T20:45:17Z\", \"notice_number\": \"1374972\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1374972\"}",
            "content_hash": "fedaac29f35e94bd20ebaf726356fdd0f958a5ade82cbe46292f952b4deef38f",
            "prev_hash": "767b55f58cce1d0e68ca20b5f4f84094ff7a837216c48bb07c862bfd22629114",
            "hash": "845731657ef3ef575e95ef3df91f625798bb825eae471eca471de2858d24731a",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T00:24:35Z",
            "content": "{\"cpv\": \"30231300\", \"url\": \"https://platformazakupowa.pl/transakcja/1374972\", \"buyer\": \"Politechnika Warszawska\", \"title\": \"SZPiZ.261.18.2026 Dostawa monitorów wielkoformatowych\", \"region\": \"mazowieckie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1374972\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T08:28:00Z\", \"notice_number\": \"1374972\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1374972\"}",
            "content_hash": "28f736f2fdb10794a17c43ec2d270a73a5ad10d3201f3eaf57422d10b03ad8c1",
            "prev_hash": "845731657ef3ef575e95ef3df91f625798bb825eae471eca471de2858d24731a",
            "hash": "e975779596ca508d666fdb0dfeca980ba5931441e83f3c82162aefc1a9beb7f0",
            "actor": null,
            "seal": null
        }
    ]
}