{
    "tender_id": 4021028,
    "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": "2026-10-29T19:35:26Z",
            "content": "{\"cpv\": \"45233140\", \"url\": \"https://platformazakupowa.pl/transakcja/1396139\", \"buyer\": \"Zarząd Dróg Wojewódzkich w Katowicach\", \"title\": \"WI/TP/260722/2 PRZEBUDOWA DW 786 W GMINIE MSTÓW NA ODCINKU OD UL. SADOWEJ DO UL. GMINNEJ.\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1396139\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:35:26Z\", \"notice_number\": \"1396139\"}",
            "content_hash": "1175c8b894105d748ddc1fd77899c8a2362bbc553b082039ffd6e9ca4dffd3ed",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "1d0645306f2dd0fed29c4b3f70882483f6663a6be54ffe566be556ff0c262cc2",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-29T19:46:00Z",
            "content": "{\"cpv\": \"45233140\", \"url\": \"https://platformazakupowa.pl/transakcja/1396139\", \"buyer\": \"Zarząd Dróg Wojewódzkich w Katowicach\", \"title\": \"WI/TP/260722/2 PRZEBUDOWA DW 786 W GMINIE MSTÓW NA ODCINKU OD UL. SADOWEJ DO UL. GMINNEJ.\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1396139\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:35:26Z\", \"notice_number\": \"1396139\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1396139\"}",
            "content_hash": "65df14f8e9d79759852e8fc22bf3520b0e768ff874eb7f703ee5a5247479081e",
            "prev_hash": "1d0645306f2dd0fed29c4b3f70882483f6663a6be54ffe566be556ff0c262cc2",
            "hash": "c0127471f7bfbb0ce33618fb641b3db99f60bc56abbc53e2465714b3015c488c",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-29T23:53:34Z",
            "content": "{\"cpv\": \"45000000\", \"url\": \"https://platformazakupowa.pl/transakcja/1396139\", \"buyer\": \"Zarząd Dróg Wojewódzkich w Katowicach\", \"title\": \"WI/TP/260722/2 PRZEBUDOWA DW 786 W GMINIE MSTÓW NA ODCINKU OD UL. SADOWEJ DO UL. GMINNEJ.\", \"region\": \"slaskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"45233222\", \"45111200\", \"45111230\", \"45111240\", \"45111300\", \"45112700\", \"45113000\", \"45232130\", \"45232310\", \"45233140\", \"45233220\", \"45233320\"], \"location\": \"Polska\", \"source_id\": \"1396139\", \"deadline_at\": \"2026-11-13T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T23:00:00Z\", \"notice_number\": \"1396139\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1396139\"}",
            "content_hash": "b9b24d0bb19d0dbc97cae95f60d9b823f821296a4638bb2bd9aaeaad33a1b89c",
            "prev_hash": "c0127471f7bfbb0ce33618fb641b3db99f60bc56abbc53e2465714b3015c488c",
            "hash": "9d420854621733159eee2f6f7ffd3890aa0c2d12e19a1d379d49b674983b1f0c",
            "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
            }
        }
    ]
}