{
    "tender_id": 5678046,
    "check": {
        "ok": true,
        "versions": 6,
        "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": "2026-11-06T20:01:33Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\"}",
            "content_hash": "af2bd7937e629c57beddb91384b70eab865f6d3cf45019a79bb1ef64d3c34e6d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "b962ad7f88a54d204a01df346a12b3e0ed61681e94b5340307f69de109166931",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-06T20:45:41Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1405481\"}",
            "content_hash": "f77418aba7826c16bfbd3b66a70bbfdd245277e28b2ad8b114c2f7ef66fc061a",
            "prev_hash": "b962ad7f88a54d204a01df346a12b3e0ed61681e94b5340307f69de109166931",
            "hash": "b88cb7ce37b914d68c8faf75ae688022292c843280505da1e92bcd3b5a2e5b60",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-06T22:45:26Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880104/buty-sportowe\"}",
            "content_hash": "c2daa020ff6ed2d7498b3e48ee4275b9e44a3fb23553a4e4f044339978fc5736",
            "prev_hash": "b88cb7ce37b914d68c8faf75ae688022292c843280505da1e92bcd3b5a2e5b60",
            "hash": "793570bf8389412c2bb5f16ec821eff72364d667f157cea49c52b11c210475ff",
            "actor": null,
            "seal": {
                "id": 15,
                "digest": "f6c36eda82d4dc4a4cabf73097f0dd62e17d55fa4f2594c5f095c0de4855ff5a",
                "file": "https://tenderiq.pl/rejestr/pieczec-15.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-15.txt.ots",
                "bitcoin_block": 975002
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-08T08:47:36Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1405481\"}",
            "content_hash": "f77418aba7826c16bfbd3b66a70bbfdd245277e28b2ad8b114c2f7ef66fc061a",
            "prev_hash": "793570bf8389412c2bb5f16ec821eff72364d667f157cea49c52b11c210475ff",
            "hash": "934f878f140d2fa510b5196f4f6f1d3b3be87cf48af639fcb2789e12d0438c68",
            "actor": null,
            "seal": {
                "id": 16,
                "digest": "72f8a05824ed8e52a6b46652732fcf18b4e959a25ba079607d2201da248317e1",
                "file": "https://tenderiq.pl/rejestr/pieczec-16.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-16.txt.ots",
                "bitcoin_block": 975121
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-11-08T16:46:04Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3880104/buty-sportowe\"}",
            "content_hash": "c2daa020ff6ed2d7498b3e48ee4275b9e44a3fb23553a4e4f044339978fc5736",
            "prev_hash": "934f878f140d2fa510b5196f4f6f1d3b3be87cf48af639fcb2789e12d0438c68",
            "hash": "bbf454a5085e51bf181a883f981357b4e28fdcf3c84bb8123f54a076eee815a8",
            "actor": null,
            "seal": {
                "id": 16,
                "digest": "72f8a05824ed8e52a6b46652732fcf18b4e959a25ba079607d2201da248317e1",
                "file": "https://tenderiq.pl/rejestr/pieczec-16.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-16.txt.ots",
                "bitcoin_block": 975121
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-11-08T23:38:32Z",
            "content": "{\"cpv\": \"18412000\", \"url\": \"https://platformazakupowa.pl/transakcja/1405481\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Buty sportowe\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1405481\", \"deadline_at\": \"2026-11-09T09:22:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-06T09:22:00Z\", \"notice_number\": \"1405481\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1405481\"}",
            "content_hash": "f77418aba7826c16bfbd3b66a70bbfdd245277e28b2ad8b114c2f7ef66fc061a",
            "prev_hash": "bbf454a5085e51bf181a883f981357b4e28fdcf3c84bb8123f54a076eee815a8",
            "hash": "b0d1aabe3786d928950dd292083d1fbfcf40b7f31f8fcda435d0e4b0f89a616c",
            "actor": null,
            "seal": null
        }
    ]
}