{
    "tender_id": 4813077,
    "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": "2026-11-02T19:21:23Z",
            "content": "{\"cpv\": \"50730000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402128\", \"buyer\": \"Miasto Zabrze\", \"title\": \"8/2026 Zamówienie usługi serwisowej nagrzewnic\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402128\", \"deadline_at\": \"2026-11-09T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T10:38:00Z\", \"notice_number\": \"1402128\"}",
            "content_hash": "af60e6d85cfdad358900e7c9e5fbccc10fdb9c5d143165cd87e809243f437ae6",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "41b5fe98fa607bda3db613c58d6981d686f79697915eb980496f50d0f3fcda85",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-02T19:45:51Z",
            "content": "{\"cpv\": \"50730000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402128\", \"buyer\": \"Miasto Zabrze\", \"title\": \"8/2026 Zamówienie usługi serwisowej nagrzewnic\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402128\", \"deadline_at\": \"2026-11-09T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T10:38:00Z\", \"notice_number\": \"1402128\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3866326/zamowienie-uslugi-serwisowej-nagrzewnic\"}",
            "content_hash": "60e222c8c7498162b72904ddd87a2e8b5378b3967a7cd56149d549957e41e5ec",
            "prev_hash": "41b5fe98fa607bda3db613c58d6981d686f79697915eb980496f50d0f3fcda85",
            "hash": "a9e73043b2c3410152d1dec8257f8adac06afd43ea3f1d695bda62ffec8cd687",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-03T21:45:52Z",
            "content": "{\"cpv\": \"50730000\", \"url\": \"https://platformazakupowa.pl/transakcja/1402128\", \"buyer\": \"Miasto Zabrze\", \"title\": \"8/2026 Zamówienie usługi serwisowej nagrzewnic\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1402128\", \"deadline_at\": \"2026-11-09T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-02T10:38:00Z\", \"notice_number\": \"1402128\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1402128\"}",
            "content_hash": "96ac37c2dbcd0922e2d9e93564abb7fe655a7401f57b2222f8a0df852020a86d",
            "prev_hash": "a9e73043b2c3410152d1dec8257f8adac06afd43ea3f1d695bda62ffec8cd687",
            "hash": "ddf3d8bd7b9b4752bc4d54601137005e002c6d2328ea6258d068dcf7ca4e232f",
            "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
            }
        }
    ]
}