{
    "tender_id": 4222628,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-10-30T21:21:11Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401022\", \"buyer\": \"Nadleśnictwo Olsztynek\", \"title\": \"1401022 SA.411.2.2026 Sprzedaż równiarki drogowej RADOJE DAKIĆ, nr fabryczny: 872, rok produkcji: 1989\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401022\", \"deadline_at\": \"2026-11-16T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T21:21:12Z\", \"notice_number\": \"1401022\"}",
            "content_hash": "3b6e76af37b575757d597ee7ed5fc5d53e0f9c3239f596d6f70b097b531ef25a",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "abe534e7da2865feb7dba5acd0dbbf12c17f58e1069ab00689b7884a4597d94c",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T21:45:31Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401022\", \"buyer\": \"Nadleśnictwo Olsztynek\", \"title\": \"1401022 SA.411.2.2026 Sprzedaż równiarki drogowej RADOJE DAKIĆ, nr fabryczny: 872, rok produkcji: 1989\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401022\", \"deadline_at\": \"2026-11-16T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T21:21:12Z\", \"notice_number\": \"1401022\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401022\"}",
            "content_hash": "e38333e6db40f5e96e0273e38283e78c4ed4a1390116542e54d77c00e805344f",
            "prev_hash": "abe534e7da2865feb7dba5acd0dbbf12c17f58e1069ab00689b7884a4597d94c",
            "hash": "298a51737f38bd944ccebad8b1e97c780384733f56b5da007234ce9f13118460",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-31T01:26:17Z",
            "content": "{\"url\": \"https://platformazakupowa.pl/transakcja/1401022\", \"buyer\": \"Nadleśnictwo Olsztynek\", \"title\": \"1401022 SA.411.2.2026 Sprzedaż równiarki drogowej RADOJE DAKIĆ, nr fabryczny: 872, rok produkcji: 1989\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1401022\", \"deadline_at\": \"2026-11-16T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T23:00:00Z\", \"notice_number\": \"1401022\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1401022\"}",
            "content_hash": "eb47231d435ca10a91b8b2a0159c3c67e53d60704ad6fa8b76c82d74cbceadf8",
            "prev_hash": "298a51737f38bd944ccebad8b1e97c780384733f56b5da007234ce9f13118460",
            "hash": "60e151222061f555a4bcea0fb4cd3c4886b16875c460619b9936d45690c5e3d1",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        }
    ]
}