{
    "tender_id": 3065148,
    "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"60400000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/082048-2026\", \"buyer\": \"Derry City and Strabane District Council\", \"title\": \"Wielka Brytania – T26-075CRO City of Derry to London Public Service Obligation (PSO) Air Service\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"UKN0A\", \"source_id\": \"ocds-h6vhtk-06ac48\", \"deadline_at\": \"2026-10-30T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-08-28T08:49:03Z\", \"notice_number\": \"082048-2026\"}",
            "content_hash": "ae26d709d75d9a6c4c2fd9ebc01a5d599111e4cacd85c5f5f4c5dc95354f73ff",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "78a7d1fac53433939a2a102a9b2d7272fe3f34b2c7e01993693ae7e16551634d",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-24T14:10:05Z",
            "content": "{\"cpv\": \"60400000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/082048-2026\", \"buyer\": \"Derry City and Strabane District Council\", \"title\": \"Wielka Brytania – T26-075CRO Miasto Derry (Londry) – Obowiązkowe Warunki Transportowe (PSO) Lotnicze z Londynu”, Źródło” (T26-075CRO City of Derry to London Public Service Obligation (PSO) Air Service)\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"UKN0A\", \"source_id\": \"ocds-h6vhtk-06ac48\", \"deadline_at\": \"2026-10-30T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-08-28T08:49:03Z\", \"notice_number\": \"082048-2026\"}",
            "content_hash": "831fd9e0afabb154a1bbfb15f7f0d93418dceee6a8b6b6d4d940b99d2c7eaf7e",
            "prev_hash": "78a7d1fac53433939a2a102a9b2d7272fe3f34b2c7e01993693ae7e16551634d",
            "hash": "22031be9ebed7e225c7bfcbde60836ae29ed78624a1d6f0985b2704e7e18d994",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        }
    ]
}