{
    "tender_id": 4222247,
    "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": "2026-10-30T20:58:29Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\"}",
            "content_hash": "cea91d9e6027331ae8e618a4a90824c3dc32ff8aa04c125974a7e60e9f19e32b",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "472541dced462a54868fc3c8e7e37ec7dd5a51f92e5fdc392a48f11fbab06a88",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T21:45:30Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860557/srodki-czystosci\"}",
            "content_hash": "b8f0aa5e4ff7b74562e635a8b83dc152eab7ff376dfe004055df80d9f29892a0",
            "prev_hash": "472541dced462a54868fc3c8e7e37ec7dd5a51f92e5fdc392a48f11fbab06a88",
            "hash": "9335e2c3e8e50559d5e95fb7b557973ae1038a2012b58bb0ec421e2c133a497c",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-30T23:33:07Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863654/srodki-czystosci\"}",
            "content_hash": "b9d4b5f34c9fc00c334f1247bf825999643b0e077592ebf48a2b21f60d515708",
            "prev_hash": "9335e2c3e8e50559d5e95fb7b557973ae1038a2012b58bb0ec421e2c133a497c",
            "hash": "dac9448e359fe9225937299fd1712ff7d5ba382c6e430d336bfceb70d3f6308d",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-31T04:45:31Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401331\"}",
            "content_hash": "9d25dead61c9d491c4b3e4fe7ac46f8323797453c6ed4d2c4279acf6a37d04b0",
            "prev_hash": "dac9448e359fe9225937299fd1712ff7d5ba382c6e430d336bfceb70d3f6308d",
            "hash": "5228ebb8857b37ee360e38b60173fe6a3de275919934d47ffb7361f7cf656ee3",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-10-31T10:45:47Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863654/srodki-czystosci\"}",
            "content_hash": "b9d4b5f34c9fc00c334f1247bf825999643b0e077592ebf48a2b21f60d515708",
            "prev_hash": "5228ebb8857b37ee360e38b60173fe6a3de275919934d47ffb7361f7cf656ee3",
            "hash": "d191d4864ccf80a72edacc478396a342b9ea4461e4efe883dd8d1d6450fd51b9",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-10-31T17:45:31Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401331\", \"buyer\": \"MIEJSKI ZESPÓŁ OBSŁUGI SZKÓŁ I PRZEDSZKOLI\", \"title\": \"8/2026/F Środki czystości\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401331\", \"deadline_at\": \"2026-11-04T10:50:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:51:00Z\", \"notice_number\": \"1401331\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401331\"}",
            "content_hash": "9d25dead61c9d491c4b3e4fe7ac46f8323797453c6ed4d2c4279acf6a37d04b0",
            "prev_hash": "d191d4864ccf80a72edacc478396a342b9ea4461e4efe883dd8d1d6450fd51b9",
            "hash": "c78f3891f2cf400d8873f40c73b5330bce03012f460d56f1fa647d1e200c1c24",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": null
            }
        }
    ]
}