{
    "tender_id": 4127471,
    "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": "2026-10-30T11:46:34Z",
            "content": "{\"cpv\": \"33660000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/241159/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Sukcesywne dostarczanie leków do Programów Lekowych do Miejskiego Centrum Medycznego im. dr Karola Jonschera w Łodzi\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241159\", \"deadline_at\": \"2026-12-04T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:08:00Z\"}",
            "content_hash": "18d3c88d1349ea489e3f874ae3099f8a8dca68fff0328099a085e2b370f8b6a0",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "fc03e0f3f93dd8047702eca491cb91cb4a712e8a695dfe8dd3d2a83b1bd57fcb",
            "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": "2026-10-30T12:45:18Z",
            "content": "{\"cpv\": \"33660000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/241159/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Sukcesywne dostarczanie leków do Programów Lekowych do Miejskiego Centrum Medycznego im. dr Karola Jonschera w Łodzi\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241159\", \"deadline_at\": \"2026-12-04T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:08:00Z\", \"procedure_url\": \"https://zamowienia.um.warszawa.pl/pn/umw/demand/notice/public/240086/details\"}",
            "content_hash": "b34895f8210ec1db5c741829d44043d05cf2f15da3b94626b644d0a306802c59",
            "prev_hash": "fc03e0f3f93dd8047702eca491cb91cb4a712e8a695dfe8dd3d2a83b1bd57fcb",
            "hash": "d3cbb0d86a5283999421f01f38a9336bb27169a75c68f3032f562c8f2a186e73",
            "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": "2026-10-31T02:14:26Z",
            "content": "{\"cpv\": \"33600000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/241159/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Sukcesywne dostarczanie leków do Programów Lekowych do Miejskiego Centrum Medycznego im. dr Karola Jonschera w Łodzi\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241159\", \"deadline_at\": \"2026-12-04T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T07:08:00Z\", \"procedure_url\": \"https://zamowienia.um.warszawa.pl/pn/umw/demand/notice/public/240086/details\"}",
            "content_hash": "937659ea3dddb671aba18e6a068a2f418c764bcfa4f198ead02656efd1f24e47",
            "prev_hash": "d3cbb0d86a5283999421f01f38a9336bb27169a75c68f3032f562c8f2a186e73",
            "hash": "3c0f5196af6990c554ba4082718e813922c12d367c5bb9697806f55d3920987d",
            "actor": null,
            "seal": null
        }
    ]
}