{
    "tender_id": 3442576,
    "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": "2026-10-26T20:28:42Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://platformazakupowa.pl/transakcja/1395935\", \"buyer\": \"Nadleśnictwo Dojlidy\", \"title\": \"SA.270.1.1.2026 Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Dojlidy w roku 2027\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1395935\", \"deadline_at\": \"2026-11-25T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T20:28:43Z\", \"notice_number\": \"1395935\"}",
            "content_hash": "4d643c941418a51b1aaade2b1490a63ec7669a088557fff0db9f77129cdd0c12",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "91d653547e23a8f0ae9199ed7a469f53022c9bdfff75126e3665dd4fead38196",
            "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": "2026-10-26T23:35:21Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://platformazakupowa.pl/transakcja/1395935\", \"buyer\": \"Nadleśnictwo Dojlidy\", \"title\": \"SA.270.1.1.2026 Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Dojlidy w roku 2027\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1395935\", \"deadline_at\": \"2026-11-25T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T20:28:43Z\", \"notice_number\": \"1395935\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395935\"}",
            "content_hash": "41e771680a151368c0bf8efb17d4a49db4f59156e57bc86e36725d2d8e092d06",
            "prev_hash": "91d653547e23a8f0ae9199ed7a469f53022c9bdfff75126e3665dd4fead38196",
            "hash": "57e31fe2e625d69b642bab70132af58c21f99924e6c96cbc1cd3f2696ecb4862",
            "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
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-27T00:47:55Z",
            "content": "{\"cpv\": \"77200000\", \"url\": \"https://platformazakupowa.pl/transakcja/1395935\", \"buyer\": \"Nadleśnictwo Dojlidy\", \"title\": \"SA.270.1.1.2026 Wykonywanie usług z zakresu gospodarki leśnej na terenie Nadleśnictwa Dojlidy w roku 2027\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1395935\", \"deadline_at\": \"2026-11-25T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-26T07:22:00Z\", \"notice_number\": \"1395935\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395935\"}",
            "content_hash": "7e1fe1ea46d88108cab3155ff03fdb1f32f191a7b77c53ce94dfbd9a25beda0b",
            "prev_hash": "57e31fe2e625d69b642bab70132af58c21f99924e6c96cbc1cd3f2696ecb4862",
            "hash": "85fa29aca2e0d689596ad3130fb22059f79b03a9c00fb71fd72d268a4a72b04e",
            "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
            }
        }
    ]
}