{
    "tender_id": 4210107,
    "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": "2026-10-30T19:15:41Z",
            "content": "{\"cpv\": \"22462000\", \"url\": \"https://dinwestycyjne.ezamawiajacy.pl/pn/DINWEST/demand/notice/public/241144/details\", \"buyer\": \"Kołobrzeski Instytut Kultury i Promocji\", \"title\": \"Wykonanie i dostawa materiałów promocyjno-reklamowych\", \"source\": \"dinwestycyjne_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241144\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T16:02:00Z\"}",
            "content_hash": "0f11cc268fea4248a06f83b1a1ffa5348b35bb5df395159837848fbd2bcb8830",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "4d5f03526014f99d3550b8eb9a95aa5678a9b60e2c5ea4ae1b6c12eab2722734",
            "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": "2026-10-30T19:45:20Z",
            "content": "{\"cpv\": \"22462000\", \"url\": \"https://dinwestycyjne.ezamawiajacy.pl/pn/DINWEST/demand/notice/public/241144/details\", \"buyer\": \"Kołobrzeski Instytut Kultury i Promocji\", \"title\": \"Wykonanie i dostawa materiałów promocyjno-reklamowych\", \"source\": \"dinwestycyjne_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"241144\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T16:02:00Z\", \"procedure_url\": \"https://dinwestycyjne.ezamawiajacy.pl/pn/DINWEST/demand/notice/public/241144/details\"}",
            "content_hash": "f9f5e4f758fc32cea573820c93d290e4bf970fd3cf5a064c5e2ed30b34adade4",
            "prev_hash": "4d5f03526014f99d3550b8eb9a95aa5678a9b60e2c5ea4ae1b6c12eab2722734",
            "hash": "1ab575c850282622ce418661a949539d9fec6e3462a740dbed82be3949a69521",
            "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
            }
        }
    ]
}