{
    "tender_id": 4134383,
    "check": {
        "ok": true,
        "versions": 2,
        "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": "2026-10-30T12:59:50Z",
            "content": "{\"cpv\": \"45421000\", \"url\": \"https://km.eb2b.com.pl/open-preview-auction.html/536391/remont-i-przebudowa-elewacji-oraz-wymiana-stolarki-okiennej\", \"buyer\": \"KOLEJE MAZOWIECKIE - KM SP. Z O.O.\", \"title\": \"Remont i przebudowa elewacji oraz wymiana stolarki okiennej\", \"region\": \"mazowieckie\", \"source\": \"km_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"536391\", \"deadline_at\": \"2026-11-20T10:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T09:45:00Z\"}",
            "content_hash": "e83a11a1903afdd1acd18f0a41a9559409d4ccaed62050acabdfa51c9adb769f",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "08b3058717fa3a7fa6a8e6c1b0ce338e6d29bcbc0571be43eefdb609391c0603",
            "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": "2026-10-30T13:45:40Z",
            "content": "{\"cpv\": \"45421000\", \"url\": \"https://km.eb2b.com.pl/open-preview-auction.html/536391/remont-i-przebudowa-elewacji-oraz-wymiana-stolarki-okiennej\", \"buyer\": \"KOLEJE MAZOWIECKIE - KM SP. Z O.O.\", \"title\": \"Remont i przebudowa elewacji oraz wymiana stolarki okiennej\", \"region\": \"mazowieckie\", \"source\": \"km_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"536391\", \"deadline_at\": \"2026-11-20T10:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T09:45:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536391/remont-i-przebudowa-elewacji-oraz-wymiana-stolarki-okiennej\"}",
            "content_hash": "4fcca1a6c6b7e3d926887587949c95b1fbe62f4b30e09b7a89c09dc3b857228c",
            "prev_hash": "08b3058717fa3a7fa6a8e6c1b0ce338e6d29bcbc0571be43eefdb609391c0603",
            "hash": "f309ff49a211643484b2f896bc1548274c45015de16c8413e1a65e9c139e516d",
            "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
            }
        }
    ]
}