{
    "tender_id": 3064379,
    "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\": \"22314000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/096651-2026\", \"buyer\": \"Northern Trains Ltd\", \"title\": \"Wielka Brytania – Heaton TRU Upgrades Designs\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"79314000\"], \"location\": \"UKC2\", \"source_id\": \"ocds-h6vhtk-0786c4\", \"deadline_at\": \"2026-11-09T16:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-13T14:20:19Z\", \"notice_number\": \"096651-2026\"}",
            "content_hash": "7653f203dc95bc1f3e3164bc3b50f977f6411104c3f854d09b15c056c9f2ebfb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "6d072749a0d0e6512e171c1a1e8ee897547421b8c502a0250b88b3121fd9496c",
            "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": "2026-10-24T14:03:45Z",
            "content": "{\"cpv\": \"22314000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/096651-2026\", \"buyer\": \"Northern Trains Ltd\", \"title\": \"Wielka Brytania – Modernizacja Heaton TRU\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"79314000\"], \"location\": \"UKC2\", \"source_id\": \"ocds-h6vhtk-0786c4\", \"deadline_at\": \"2026-11-09T16:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-13T14:20:19Z\", \"notice_number\": \"096651-2026\"}",
            "content_hash": "277e42d8c3051771e5b7eccf175248bbf9e2ca196c0949c3f19fda65d90aef5f",
            "prev_hash": "6d072749a0d0e6512e171c1a1e8ee897547421b8c502a0250b88b3121fd9496c",
            "hash": "7bc49a27e6d7b3d9b5a9c4ba6c7d57cc463f38889dee644eb6d196760cf50bc9",
            "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
            }
        }
    ]
}