{
    "tender_id": 4222219,
    "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": "2026-10-30T20:55:52Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\"}",
            "content_hash": "d9bb1e4e0a0a2e0e701c05e5564e131d7c862795abb036ae8106919b17564d71",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "720bcbb5196f8cda4ef47123ca5dc0481ab2be3f7416d4e2a9358f3623e9f041",
            "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": "2026-10-30T21:45:31Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401213\"}",
            "content_hash": "69a6df4a0d4fac27b03e6411d9c5341b60838334e6acc90c33fcee4b763e59e2",
            "prev_hash": "720bcbb5196f8cda4ef47123ca5dc0481ab2be3f7416d4e2a9358f3623e9f041",
            "hash": "5ce497b8200ab25f9ca2b2a66e3a27c1fb157c4d5174b08a5953ed32a7147fa1",
            "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": "2026-10-30T23:33:03Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863040/zakup-artykulow-biurowych-na-potrzeby-mpk-we-wroclawiu\"}",
            "content_hash": "92575c1ec521afd2ee2640bb623fb0052b404029fdada9ff3f0c0c86a1551f24",
            "prev_hash": "5ce497b8200ab25f9ca2b2a66e3a27c1fb157c4d5174b08a5953ed32a7147fa1",
            "hash": "778739443c772956c940edc70211e1b6e2a2c9d7b6318def8fdab5e6886b4d78",
            "actor": null,
            "seal": null
        },
        {
            "version": 4,
            "recorded_at": "2026-10-31T04:45:55Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401109\"}",
            "content_hash": "214c7493c32e14e44116784e175ec5738d7705d1ef2af03d7a04caeb430a4029",
            "prev_hash": "778739443c772956c940edc70211e1b6e2a2c9d7b6318def8fdab5e6886b4d78",
            "hash": "192d62bcad2026d6e33c4dd5faf265a3dd8600fcf085d3894b85d20cd785de92",
            "actor": null,
            "seal": null
        },
        {
            "version": 5,
            "recorded_at": "2026-10-31T10:45:57Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863040/zakup-artykulow-biurowych-na-potrzeby-mpk-we-wroclawiu\"}",
            "content_hash": "92575c1ec521afd2ee2640bb623fb0052b404029fdada9ff3f0c0c86a1551f24",
            "prev_hash": "192d62bcad2026d6e33c4dd5faf265a3dd8600fcf085d3894b85d20cd785de92",
            "hash": "c11e4cf5c615e24f52b130e7fa25ed7e89b76b6e675d4334680de5a030548a33",
            "actor": null,
            "seal": null
        },
        {
            "version": 6,
            "recorded_at": "2026-10-31T17:45:48Z",
            "content": "{\"cpv\": \"30100000\", \"url\": \"https://platformazakupowa.pl/transakcja/1401109\", \"buyer\": \"Miejskie Przedsiębiorstwo Komunikacyjne sp. z o.o. we Wrocławiu\", \"title\": \"Zakup artykułów biurowych na potrzeby MPK we Wrocławiu\", \"region\": \"dolnoslaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401109\", \"deadline_at\": \"2026-11-04T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:44:00Z\", \"notice_number\": \"1401109\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401109\"}",
            "content_hash": "214c7493c32e14e44116784e175ec5738d7705d1ef2af03d7a04caeb430a4029",
            "prev_hash": "c11e4cf5c615e24f52b130e7fa25ed7e89b76b6e675d4334680de5a030548a33",
            "hash": "bc8a6c7ee9c65c65cd07820ca4475df96d75f2ae22367b9dac3be8bf7e0bfa97",
            "actor": null,
            "seal": null
        }
    ]
}