{
    "tender_id": 3359965,
    "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": "2026-10-26T09:36:57Z",
            "content": "{\"cpv\": \"45212225\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/740725-2026\", \"buyer\": \"Stadt Ennigerloh\", \"title\": \"Niemcy – Roboty budowlane związane z halami sportowymi – Stahlbau, Trapezbleche\", \"source\": \"ted_deu\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DEA38, DEU, DEA38, DEU\", \"source_id\": \"740725-2026\", \"deadline_at\": \"2026-11-26T07:59:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "e5c93bf94aefa483bbd1dbdfdc49c9ea9df01d957546994eff74d7c9b78b1fe0",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "38860967f3e5f80a7a905b1102756dc6aa2944e95d1c72c91fec400a53a399a6",
            "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": "2026-10-26T23:17:01Z",
            "content": "{\"cpv\": \"45212225\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/740725-2026\", \"buyer\": \"Stadt Ennigerloh\", \"title\": \"Niemcy – Roboty budowlane związane z halami sportowymi – Stalowy budynek, blachorozbiórkowe\", \"source\": \"ted_deu\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DEA38, DEU, DEA38, DEU\", \"source_id\": \"740725-2026\", \"deadline_at\": \"2026-11-26T07:59:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "944ddfd78aae8467f4b325c00a2a015353573ac693c34098cf7e620271de6fb4",
            "prev_hash": "38860967f3e5f80a7a905b1102756dc6aa2944e95d1c72c91fec400a53a399a6",
            "hash": "42c244a919ad92353d306fc247068b12deb8a777fdbbbe51e5656c6a5921f108",
            "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
            }
        }
    ]
}