{
    "tender_id": 3064784,
    "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\": \"64110000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/093430-2026\", \"buyer\": \"Tate\", \"title\": \"Wielka Brytania – Tate Galleries - Provision of Membership Communication Services for Tate Members\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"79571000\", \"79823000\"], \"location\": \"UK\", \"source_id\": \"ocds-h6vhtk-077feb\", \"deadline_at\": \"2026-11-06T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-02T13:59:21Z\", \"notice_number\": \"093430-2026\"}",
            "content_hash": "3444808aeb93955a35f7f84655bdb1d5ff887648070e564d6bee374bb0bccac3",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "7bac01cc5d2a30f9ff5db9407ddc4ecc09e58569a9db099d271aeae05b07ba96",
            "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": "2026-10-24T14:06:15Z",
            "content": "{\"cpv\": \"64110000\", \"url\": \"https://www.find-tender.service.gov.uk/Notice/093430-2026\", \"buyer\": \"Tate\", \"title\": \"Wielka Brytania – Tate Galleries – Zapewnienie Komunikacji z Członkami Tate\", \"source\": \"find_a_tender\", \"status\": \"active\", \"cpv_more\": [\"79571000\", \"79823000\"], \"location\": \"UK\", \"source_id\": \"ocds-h6vhtk-077feb\", \"deadline_at\": \"2026-11-06T12:00:00Z\", \"notice_type\": \"Ogłoszenie Find a Tender\", \"published_at\": \"2026-10-02T13:59:21Z\", \"notice_number\": \"093430-2026\"}",
            "content_hash": "59319c06ceb095746b6197b081a9a8e9e2607f466d2fc05a4705a7bcb1c336d8",
            "prev_hash": "7bac01cc5d2a30f9ff5db9407ddc4ecc09e58569a9db099d271aeae05b07ba96",
            "hash": "0981111b4b9fcc349b4fc69b8bdae2bf4b32892325796e75b6e542a2288a3d8a",
            "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
            }
        }
    ]
}