{
    "tender_id": 3063833,
    "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\": \"71541000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/100305-2026\", \"buyer\": \"Oxfordshire County Council\", \"title\": \"Wielka Brytania – HUG 2 Home Energy Retrofit\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"UKJ14\", \"source_id\": \"ocds-h6vhtk-06ce0e\", \"deadline_at\": \"2026-12-02T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-23T09:38:01Z\", \"notice_number\": \"100305-2026\"}",
            "content_hash": "7349eb6d686218918c3dec556a0bc40ca572e2e0893b736403650bde91d3dda1",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "29516856a813405a3399fabfac431d89eb54688f5fdbfa1a7c5a1191ece4e183",
            "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": "2026-10-24T14:00:30Z",
            "content": "{\"cpv\": \"71541000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/100305-2026\", \"buyer\": \"Oxfordshire County Council\", \"title\": \"Wielka Brytania – HUG 2 - Termomodernizacja Domów\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"UKJ14\", \"source_id\": \"ocds-h6vhtk-06ce0e\", \"deadline_at\": \"2026-12-02T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-23T09:38:01Z\", \"notice_number\": \"100305-2026\"}",
            "content_hash": "236ea554ec849c2c129237acab25e3c84836b9f69188022e67bcd9cef2c3379c",
            "prev_hash": "29516856a813405a3399fabfac431d89eb54688f5fdbfa1a7c5a1191ece4e183",
            "hash": "7218b91c19dffd7f07c6be6ed6fa5d00079358395a0282556caaebce4009ef85",
            "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
            }
        }
    ]
}