{
    "tender_id": 3348987,
    "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": "2026-10-26T08:51:56Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1397695\", \"buyer\": \"Toruńskie Wodociągi Sp. z o.o.\", \"title\": \"Sprzedaż środków trwałych (pompa, ciągnik)\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397695\", \"deadline_at\": \"2026-11-02T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T06:58:00Z\", \"notice_number\": \"1397695\"}",
            "content_hash": "19360050ebe58a692a0461f91382a8b015bc50747d41f402f43a327a754c7edb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "009a8dd1bbbaa2d13c045a8149559f995ee6481b49beb80468079907ec367e13",
            "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": "2026-10-26T23:36:18Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1397695\", \"buyer\": \"Toruńskie Wodociągi Sp. z o.o.\", \"title\": \"Sprzedaż środków trwałych (pompa, ciągnik)\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397695\", \"deadline_at\": \"2026-11-02T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T06:58:00Z\", \"notice_number\": \"1397695\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1397695\"}",
            "content_hash": "a11c1d55fbf3f39292a050906d7bbcdb4892ff92fec3b1356840fc0f07a704f1",
            "prev_hash": "009a8dd1bbbaa2d13c045a8149559f995ee6481b49beb80468079907ec367e13",
            "hash": "cb3bdcf039239df8aa27db69a746018a85c40c032cc3f710ec2ed8c0b1fd5eec",
            "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
            }
        }
    ]
}