{
    "tender_id": 2773383,
    "check": {
        "ok": true,
        "versions": 8,
        "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": "2026-10-24T13:58:39Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/730203-2026\"}",
            "content_hash": "32ec84e6df2dd5ce9bcdc0f6184fb001e2ae71d6a4d886b27343eda5a69d8efe",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3c426d98578d950c86ef54dca33b22f302bdc4aa9c90ad5f5a87aa9799728728",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:35:14Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\"}",
            "content_hash": "c76879f43d019ae39a88db2f3a2a16226e5bdfa364cfaf08ddfa32fb70d7275a",
            "prev_hash": "3c426d98578d950c86ef54dca33b22f302bdc4aa9c90ad5f5a87aa9799728728",
            "hash": "1959a1990f6f657cad31f90a0b81092732765ddc2492990bf648b892ada24635",
            "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": "2026-10-27T11:33:47Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/730203-2026\"}",
            "content_hash": "32ec84e6df2dd5ce9bcdc0f6184fb001e2ae71d6a4d886b27343eda5a69d8efe",
            "prev_hash": "1959a1990f6f657cad31f90a0b81092732765ddc2492990bf648b892ada24635",
            "hash": "b588b05535307e22e974952aba3749a0a854405122cbc0730b12f32821bcdbe7",
            "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": 4,
            "recorded_at": "2026-10-28T19:32:12Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/747911-2026\"}",
            "content_hash": "0ebf086c101795f954f1f6a6dcfce9614c00fe06c15bf4c2d6a0a774448fdeda",
            "prev_hash": "b588b05535307e22e974952aba3749a0a854405122cbc0730b12f32821bcdbe7",
            "hash": "dddd7059998bb7effecdd1285422d1ecc3f99811e452fe79f49d10124839fc58",
            "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": 5,
            "recorded_at": "2026-10-28T22:45:43Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://e-propublico.pl/Ogloszenia/Details/07a88307-161e-46e2-8ba3-7f52bec6bba1\"}",
            "content_hash": "f282fa479c591eb05252781896ce815a3384e5f9ee59e1f49c6a94e1ee1345f1",
            "prev_hash": "dddd7059998bb7effecdd1285422d1ecc3f99811e452fe79f49d10124839fc58",
            "hash": "aeca9ea3270b2a6f7635dafb9ad1e5b1d9c1752f585ec1846058b131a0ea2b00",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-10-28T23:31:45Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/730203-2026\"}",
            "content_hash": "32ec84e6df2dd5ce9bcdc0f6184fb001e2ae71d6a4d886b27343eda5a69d8efe",
            "prev_hash": "aeca9ea3270b2a6f7635dafb9ad1e5b1d9c1752f585ec1846058b131a0ea2b00",
            "hash": "fd42118a69ea8205954876328bfb5cd98b43d26e2df2fdab90ea9aaabb73fed7",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 7,
            "recorded_at": "2026-10-30T15:31:07Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1396606\"}",
            "content_hash": "d21023d58ac5f04ca36c6955af97bfe854218846281d3addda48671a37935ee6",
            "prev_hash": "fd42118a69ea8205954876328bfb5cd98b43d26e2df2fdab90ea9aaabb73fed7",
            "hash": "672b660b3a9bf303c16886f34ba17a3d69d8f5a524929c8a849e623b4c515ecf",
            "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": 8,
            "recorded_at": "2026-10-30T19:32:00Z",
            "content": "{\"cpv\": \"90500000\", \"url\": \"https://bip.karsin.pl/wiadomosci/3/wiadomosc/909345/odbior_i_transport_odpadow_komunalnych_z_terenu_gminy_karsin\", \"buyer\": \"Gmina Karsin\", \"title\": \"Odbiór i transport odpadów komunalnych z terenu Gminy Karsin\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.karsin.pl:909345\", \"deadline_at\": \"2026-11-06T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T06:29:24Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df302e-3c0c-2fd8-701a-d000016a11fe\"}",
            "content_hash": "fc6ee96b3dbeb9bd4a010dfd0cf7b71a9530302754db4ee76717f0e3ce882d6d",
            "prev_hash": "672b660b3a9bf303c16886f34ba17a3d69d8f5a524929c8a849e623b4c515ecf",
            "hash": "77ef6097d7f1b0833a4fba6a76efa250f7a4b5c65176892f94b05923a03fe69d",
            "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
            }
        }
    ]
}