{
    "tender_id": 3348388,
    "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": "2026-10-26T08:31:38Z",
            "content": "{\"cpv\": \"44111000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/738962-2026\", \"buyer\": \"ABRUKO Sp. z o.o.\", \"title\": \"Polska – Materiały budowlane – „Sukcesywna dostawa materiałów budowlanych w roku 2027”.\", \"region\": \"pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"POL, PL634, PL634, PL634, PL634, PL634, PL634, POL, POL, POL, POL, POL, POL\", \"source_id\": \"738962-2026\", \"deadline_at\": \"2026-11-24T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "ffc0df29390ee0523b807c942b741939674ff5e962d596a1b2e62e5df519bf3d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "6f08c3f013f4a17e9c511f8ee538fcbad8b9550de8e32e53ab568aaed2247dba",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:36:20Z",
            "content": "{\"cpv\": \"44111000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/738962-2026\", \"buyer\": \"ABRUKO Sp. z o.o.\", \"title\": \"Polska – Materiały budowlane – „Sukcesywna dostawa materiałów budowlanych w roku 2027”.\", \"region\": \"pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"POL, PL634, PL634, PL634, PL634, PL634, PL634, POL, POL, POL, POL, POL, POL\", \"source_id\": \"738962-2026\", \"deadline_at\": \"2026-11-24T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\", \"procedure_url\": \"https://abruko.ezamawiajacy.pl/pn/abruko/demand/notice/public/240285/details\"}",
            "content_hash": "ac676dbfa832fb4c5c028f88a7efec40a4292b0f37efe430abbb64d46ffb7a65",
            "prev_hash": "6f08c3f013f4a17e9c511f8ee538fcbad8b9550de8e32e53ab568aaed2247dba",
            "hash": "573db76374e1bb6e5b4bd9eaa6421ddc8adff3006950b2af0b2223a9ca7ba019",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}