{
    "tender_id": 3818492,
    "check": {
        "ok": true,
        "versions": 5,
        "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": "2026-10-28T19:52:24Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df34f7-3a49-9900-f9f4-660001a3c2ce\", \"buyer\": \"Gmina Bieruń reprezentowana przez Burmistrza Miasta Bieruń\", \"title\": \"Zakup agregatów prądotwórczych w ramach Programu Ochrony Ludności i Obrony Cywilnej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"34223300\"], \"location\": \"Bieruń, śląskie\", \"buyer_nip\": \"6461015103\", \"source_id\": \"2026/BZP 00506407/01\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:27:35Z\", \"notice_number\": \"2026/BZP 00506407/01\"}",
            "content_hash": "e016301a358277fe994ce6b538f18228a52285415da882b1206b511efdb70ccb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "5e6587b440cbcf6fdeaa8b431a36eba846ca22907bdc983a60415d8ba5cd9f78",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T20:45:41Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df34f7-3a49-9900-f9f4-660001a3c2ce\", \"buyer\": \"Gmina Bieruń reprezentowana przez Burmistrza Miasta Bieruń\", \"title\": \"Zakup agregatów prądotwórczych w ramach Programu Ochrony Ludności i Obrony Cywilnej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"34223300\"], \"location\": \"Bieruń, śląskie\", \"buyer_nip\": \"6461015103\", \"source_id\": \"2026/BZP 00506407/01\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:27:35Z\", \"notice_number\": \"2026/BZP 00506407/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399416\"}",
            "content_hash": "d94ddfe93c65288d9d32a09c18dd17a41354be7f221470a6f0d7370b51b52153",
            "prev_hash": "5e6587b440cbcf6fdeaa8b431a36eba846ca22907bdc983a60415d8ba5cd9f78",
            "hash": "475b1dbf17d7a9078b9d38ffef4ca7aa77f35c40a600727b0bf0e8e5fe7f266d",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-29T08:26:19Z",
            "content": "{\"cpv\": \"31120000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df34f7-3a49-9900-f9f4-660001a3c2ce\", \"buyer\": \"Gmina Bieruń reprezentowana przez Burmistrza Miasta Bieruń\", \"title\": \"Zakup agregatów prądotwórczych w ramach Programu Ochrony Ludności i Obrony Cywilnej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bieruń, śląskie\", \"source_id\": \"2026/BZP 00506407/01\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:27:35Z\", \"notice_number\": \"2026/BZP 00506407/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399416\"}",
            "content_hash": "2be960b9d7355ba43a612275ef4f00b6a29e1e45b0535c5af5e76253c992964e",
            "prev_hash": "475b1dbf17d7a9078b9d38ffef4ca7aa77f35c40a600727b0bf0e8e5fe7f266d",
            "hash": "ad79645b8f638ebbf34f8bbab215ac8f03724cc99935a7b63a569d1c2f1b5f92",
            "actor": null,
            "seal": null
        },
        {
            "version": 4,
            "recorded_at": "2026-10-29T09:29:58Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df34f7-3a49-9900-f9f4-660001a3c2ce\", \"buyer\": \"Gmina Bieruń reprezentowana przez Burmistrza Miasta Bieruń\", \"title\": \"Zakup agregatów prądotwórczych w ramach Programu Ochrony Ludności i Obrony Cywilnej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"34223300\"], \"location\": \"Bieruń, śląskie\", \"buyer_nip\": \"6461015103\", \"source_id\": \"2026/BZP 00506407/01\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:27:35Z\", \"notice_number\": \"2026/BZP 00506407/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399416\"}",
            "content_hash": "d94ddfe93c65288d9d32a09c18dd17a41354be7f221470a6f0d7370b51b52153",
            "prev_hash": "ad79645b8f638ebbf34f8bbab215ac8f03724cc99935a7b63a569d1c2f1b5f92",
            "hash": "89de1a0c677e125ab58f01ec1f8f813253e340dd5067fce136f2a9a350292688",
            "actor": null,
            "seal": null
        },
        {
            "version": 5,
            "recorded_at": "2026-10-29T16:26:00Z",
            "content": "{\"cpv\": \"31120000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df34f7-3a49-9900-f9f4-660001a3c2ce\", \"buyer\": \"Gmina Bieruń reprezentowana przez Burmistrza Miasta Bieruń\", \"title\": \"Zakup agregatów prądotwórczych w ramach Programu Ochrony Ludności i Obrony Cywilnej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bieruń, śląskie\", \"source_id\": \"2026/BZP 00506407/01\", \"deadline_at\": \"2026-11-05T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T13:27:35Z\", \"notice_number\": \"2026/BZP 00506407/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399416\"}",
            "content_hash": "2be960b9d7355ba43a612275ef4f00b6a29e1e45b0535c5af5e76253c992964e",
            "prev_hash": "89de1a0c677e125ab58f01ec1f8f813253e340dd5067fce136f2a9a350292688",
            "hash": "573da39329190886b9d219240f06e9be5a7068868acf81a853d8f1622e3e3241",
            "actor": null,
            "seal": null
        }
    ]
}