{
    "tender_id": 4011263,
    "check": {
        "ok": true,
        "versions": 12,
        "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": "2026-10-29T18:07:01Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\"}",
            "content_hash": "76ec4a2dc622fe74a5d239a0b10b9c04b841083477f2eaeb3b5f52c944d4ac3e",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "0d9d84e055b1fb0c6a5e518f98f0bc025b0c40a7df32a318e8071e961d27b066",
            "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": 2,
            "recorded_at": "2026-10-29T18:45:20Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "0d9d84e055b1fb0c6a5e518f98f0bc025b0c40a7df32a318e8071e961d27b066",
            "hash": "33cfe4d3b0829ee964198111b4372d328ae3de9ee522f06b2d462df54351f891",
            "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": 3,
            "recorded_at": "2026-10-31T04:45:53Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3598-a318-58c6-cfcf-e60001c05ef0\"}",
            "content_hash": "14b43631d19ee5ef9add800221a4b6646610ecc827d203f2699a2f30e2887608",
            "prev_hash": "33cfe4d3b0829ee964198111b4372d328ae3de9ee522f06b2d462df54351f891",
            "hash": "2cb208914d3dcc97e183adf9e292d19f869c31c608fc4cc878c6e05273c399d4",
            "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
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-31T10:45:53Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "2cb208914d3dcc97e183adf9e292d19f869c31c608fc4cc878c6e05273c399d4",
            "hash": "a3ac5e885ebc00008622912cabac4f724430c32d8e2d996a5bcb9f26c9912dd3",
            "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
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-10-31T17:45:29Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3598-a318-58c6-cfcf-e60001c05ef0\"}",
            "content_hash": "14b43631d19ee5ef9add800221a4b6646610ecc827d203f2699a2f30e2887608",
            "prev_hash": "a3ac5e885ebc00008622912cabac4f724430c32d8e2d996a5bcb9f26c9912dd3",
            "hash": "063750dc73b4cbcf647254b11187a15350f19c7bac249626ef3c3eded1a2848f",
            "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
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-11-01T00:45:20Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "063750dc73b4cbcf647254b11187a15350f19c7bac249626ef3c3eded1a2848f",
            "hash": "cdccb82308766e9c20ab875cd3307ecac3848fc8390976ce6f1a6ed8967a87c6",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        },
        {
            "version": 7,
            "recorded_at": "2026-11-01T06:45:18Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3598-a318-58c6-cfcf-e60001c05ef0\"}",
            "content_hash": "14b43631d19ee5ef9add800221a4b6646610ecc827d203f2699a2f30e2887608",
            "prev_hash": "cdccb82308766e9c20ab875cd3307ecac3848fc8390976ce6f1a6ed8967a87c6",
            "hash": "286c7591e0cd9a4532f9ade3e676d3f24156b488fde11b74f67311bf1116d4d9",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        },
        {
            "version": 8,
            "recorded_at": "2026-11-02T01:45:35Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "286c7591e0cd9a4532f9ade3e676d3f24156b488fde11b74f67311bf1116d4d9",
            "hash": "8f1aca2273c6258d80a6762ceae813a22f0b434d272c5e03a76e22b96bbb1307",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        },
        {
            "version": 9,
            "recorded_at": "2026-11-02T07:35:45Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3598-a318-58c6-cfcf-e60001c05ef0\"}",
            "content_hash": "14b43631d19ee5ef9add800221a4b6646610ecc827d203f2699a2f30e2887608",
            "prev_hash": "8f1aca2273c6258d80a6762ceae813a22f0b434d272c5e03a76e22b96bbb1307",
            "hash": "a4df1a0b6e1579911b596e5b6c236f8c353003fa3a3a9ab680add2c14af59160",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        },
        {
            "version": 10,
            "recorded_at": "2026-11-02T13:46:02Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "a4df1a0b6e1579911b596e5b6c236f8c353003fa3a3a9ab680add2c14af59160",
            "hash": "40292671aef9cab7d144574a099d12eb0dc7664070e3442ef86fe9f19e0d2570",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": 974314
            }
        },
        {
            "version": 11,
            "recorded_at": "2026-11-03T21:45:56Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3598-a318-58c6-cfcf-e60001c05ef0\"}",
            "content_hash": "14b43631d19ee5ef9add800221a4b6646610ecc827d203f2699a2f30e2887608",
            "prev_hash": "40292671aef9cab7d144574a099d12eb0dc7664070e3442ef86fe9f19e0d2570",
            "hash": "bef7de48271d650853cdf6c93aaaaca36a9e1a883db77ccb0456f8c976a8324d",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 12,
            "recorded_at": "2026-11-04T10:46:13Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://bip.zelow.pl/wiadomosci/8699/wiadomosc/910580/zimowe_utrzymanie_drog_na_terenie_gminy_zelow_w_sezonie_zimowym_\", \"buyer\": \"Gmina Zelów\", \"title\": \"Zimowe utrzymanie dróg na terenie gminy Zelów w sezonie zimowym 2026/2027\", \"region\": \"lodzkie\", \"source\": \"idcom_bip\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"bip.zelow.pl:910580\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:31:10Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3860205/zimowe-utrzymanie-drog-na-terenie-gminy-zelow-w-sezonie-zimowym-2026-2027\"}",
            "content_hash": "fa29021816c349e05137d3360d6317d6877a85ec8af6668cd5792fa14419f9b6",
            "prev_hash": "bef7de48271d650853cdf6c93aaaaca36a9e1a883db77ccb0456f8c976a8324d",
            "hash": "efee1b774e4689e7e3d09ac1ecd40f3dfc2ae6b13df16a3355dd4823e5efbbc8",
            "actor": null,
            "seal": null
        }
    ]
}