{
    "tender_id": 3359940,
    "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": "2026-10-26T09:36:53Z",
            "content": "{\"cpv\": \"71311200\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/740447-2026\", \"buyer\": \"Land Berlin, Senatsverwaltung für Mobilität, Verkehr, Klimaschutz und Umwelt\", \"title\": \"Niemcy – Usługi doradcze w zakresie systemów transportowych – Dienstleistungen i.R. des Mobilitätsmanagements für Schulen in Berlin\", \"source\": \"ted_deu\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DE300, DEU, DE300, DEU\", \"source_id\": \"740447-2026\", \"deadline_at\": \"2026-11-24T10:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "30d3c982ed6eca60cfdcdbcf1ca6c5d195d4cacf71c93ba726306eb229b16608",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "457275fe1ca0891d3b295782fedd4d78ef962bdc445e3ff3b31cea87eb13f99f",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:16:57Z",
            "content": "{\"cpv\": \"71311200\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/740447-2026\", \"buyer\": \"Land Berlin, Senatsverwaltung für Mobilität, Verkehr, Klimaschutz und Umwelt\", \"title\": \"Niemcy – Usługi doradcze w zakresie systemów transportowych – Usługi w zakresie Zarządzania Mobilnością dla Szkół w Berlinie\", \"source\": \"ted_deu\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"DE300, DEU, DE300, DEU\", \"source_id\": \"740447-2026\", \"deadline_at\": \"2026-11-24T10:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "c6bacfeb4d90d0c074cca3bba1d65a68cca13a59f995124be1b454ad76e8966b",
            "prev_hash": "457275fe1ca0891d3b295782fedd4d78ef962bdc445e3ff3b31cea87eb13f99f",
            "hash": "8b2542bf5a3bbd879953b3b57825370c702bb4b8e8bb2ca16c9b74c05b3f85b3",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}