{
    "tender_id": 3064828,
    "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\": \"45252124\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/093052-2026\", \"buyer\": \"Castle Point Borough Council\", \"title\": \"Wielka Brytania – Canvey Lake Dredging\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"45262640\"], \"location\": \"UKH\", \"source_id\": \"ocds-h6vhtk-068ca1\", \"deadline_at\": \"2026-11-02T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-01T16:31:48Z\", \"notice_number\": \"093052-2026\"}",
            "content_hash": "c700bdf398c672a26264a421aa3ccd189aae6b538562ffcf214ca09339cd3bbb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "227430785a1418ae0d91f50515aee8a8b1cc40cc2e871ebef022c262d9dd0cd8",
            "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": "2026-10-24T14:06:32Z",
            "content": "{\"cpv\": \"45252124\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/093052-2026\", \"buyer\": \"Castle Point Borough Council\", \"title\": \"Wielka Brytania – Odkopanie Jeziora Canvey\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"45262640\"], \"location\": \"UKH\", \"source_id\": \"ocds-h6vhtk-068ca1\", \"deadline_at\": \"2026-11-02T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-01T16:31:48Z\", \"notice_number\": \"093052-2026\"}",
            "content_hash": "cb5d0b00307de9097aa6b727f5dd4d83740bfe8d26e8b4d1e05ff75eee9c548a",
            "prev_hash": "227430785a1418ae0d91f50515aee8a8b1cc40cc2e871ebef022c262d9dd0cd8",
            "hash": "ac16cc730765212a3b3e2f6cc23edaa1fba46e01b544f80ba7bca08d430cf68a",
            "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
            }
        }
    ]
}