{
    "tender_id": 3046987,
    "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\": \"71000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/736694-2026\", \"buyer\": \"Helsingin Satama Oy\", \"title\": \"Finlandia – Usługi architektoniczne, budowlane, inżynieryjne i kontrolne – Helsingin Sataman rakennusten suunnittelun puitejärjestely\", \"source\": \"ted_fin\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"FI1B1, FIN, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FIN, FIN, FIN, FIN, FIN, FIN, FIN\", \"source_id\": \"736694-2026\", \"deadline_at\": \"2026-11-23T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-23T02:00:00Z\"}",
            "content_hash": "6ec3040ebacc58fc142f231ee2e68429276cb2eb6cba40a70a0e3d85dd690bfa",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "f106005b9e15bd7940f9ddcb1c541bcf629cff1ca2c63847403042db07473162",
            "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": "2026-10-24T20:17:55Z",
            "content": "{\"cpv\": \"71000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/736694-2026\", \"buyer\": \"Helsingin Satama Oy\", \"title\": \"Finlandia – Usługi architektoniczne, budowlane, inżynieryjne i kontrolne – Ramowa umowa na projekt budynków Portu Helsinaski\", \"source\": \"ted_fin\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"FI1B1, FIN, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FI1B1, FIN, FIN, FIN, FIN, FIN, FIN, FIN\", \"source_id\": \"736694-2026\", \"deadline_at\": \"2026-11-23T08:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-23T02:00:00Z\"}",
            "content_hash": "81a7523477aeedc0eb72f7fbcdbf7e8b44eff99f6ab63b338c3c38734b66c259",
            "prev_hash": "f106005b9e15bd7940f9ddcb1c541bcf629cff1ca2c63847403042db07473162",
            "hash": "c4bb2fc0646f5eacf142c1b191c5fad14963bcdde83216764425bd5d8b7d3147",
            "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
            }
        }
    ]
}