{
    "tender_id": 3730877,
    "check": {
        "ok": true,
        "versions": 10,
        "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": "2026-10-28T06:49:46Z",
            "content": "{\"cpv\": \"34921000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"43313100\"], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\"}",
            "content_hash": "7f654ea72473b8a401a1b2a4fe206f9ef7e982aa22284337a1362b6e8381119c",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "b7ed946c7e2a593ea21a6aa5611b5792138731e0bc855632f3eb1ace5e4e63ae",
            "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": "2026-10-28T08:45:17Z",
            "content": "{\"cpv\": \"34921000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"43313100\"], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856366/zakup-piaskarki-i-pluga\"}",
            "content_hash": "cd7fd2968866c0f9eae428d00f41fc881546af561f2747e48df9bf0da4d0ceca",
            "prev_hash": "b7ed946c7e2a593ea21a6aa5611b5792138731e0bc855632f3eb1ace5e4e63ae",
            "hash": "5f22e30ffe24a306cb8ebf963731df04850377422d1945aee2cbe6a15645d32f",
            "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": "2026-10-28T22:45:33Z",
            "content": "{\"cpv\": \"34921000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"43313100\"], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3461-0376-8075-f0a0-c4000171d9a8\"}",
            "content_hash": "f2c468e37fa903a4a6531545995724c79afb6d13e32db62c703c49a8f4139285",
            "prev_hash": "5f22e30ffe24a306cb8ebf963731df04850377422d1945aee2cbe6a15645d32f",
            "hash": "97079187a969b6be22ebca987b6bb8e9a7fca6a3f458677e57a4e80a963a3c46",
            "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": 4,
            "recorded_at": "2026-10-29T05:45:37Z",
            "content": "{\"cpv\": \"34921000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"43313100\"], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856366/zakup-piaskarki-i-pluga\"}",
            "content_hash": "cd7fd2968866c0f9eae428d00f41fc881546af561f2747e48df9bf0da4d0ceca",
            "prev_hash": "97079187a969b6be22ebca987b6bb8e9a7fca6a3f458677e57a4e80a963a3c46",
            "hash": "8ab89c3ac42da9fcf742bf6b265f1b7e958c5a26295700d9b9283b358c0d1c54",
            "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": 5,
            "recorded_at": "2026-10-29T08:45:28Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856366/zakup-piaskarki-i-pluga\"}",
            "content_hash": "d20529d32bca85e3af6fd6f3238e48b1efe19dbb6a65dba3c6ace31f94c5fa50",
            "prev_hash": "8ab89c3ac42da9fcf742bf6b265f1b7e958c5a26295700d9b9283b358c0d1c54",
            "hash": "261092b281d890182a33375ef20406dfef7a3af8b29c5833dd632367a5ea9882",
            "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": "2026-10-31T04:45:31Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3461-0376-8075-f0a0-c4000171d9a8\"}",
            "content_hash": "74b3e0a6d72a1d92469d2b9adb726efd43de9b0a37dfc48c1e627e766e61f657",
            "prev_hash": "261092b281d890182a33375ef20406dfef7a3af8b29c5833dd632367a5ea9882",
            "hash": "ce624a9015993925e609e7c62f3caf4d235e73a024eda833432c0e8f80fbd1df",
            "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": 7,
            "recorded_at": "2026-10-31T10:45:49Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856366/zakup-piaskarki-i-pluga\"}",
            "content_hash": "d20529d32bca85e3af6fd6f3238e48b1efe19dbb6a65dba3c6ace31f94c5fa50",
            "prev_hash": "ce624a9015993925e609e7c62f3caf4d235e73a024eda833432c0e8f80fbd1df",
            "hash": "3c0670466e913e65c82566e5f84dc359b9c1c29d725c82375548c1f91f87d614",
            "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": 8,
            "recorded_at": "2026-10-31T17:45:20Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3461-0376-8075-f0a0-c4000171d9a8\"}",
            "content_hash": "74b3e0a6d72a1d92469d2b9adb726efd43de9b0a37dfc48c1e627e766e61f657",
            "prev_hash": "3c0670466e913e65c82566e5f84dc359b9c1c29d725c82375548c1f91f87d614",
            "hash": "759ffb41c6867c1aab0a6bd5d39122f4d424ce84da0cc0c299947fea5ac6d918",
            "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": 9,
            "recorded_at": "2026-11-01T00:45:33Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856366/zakup-piaskarki-i-pluga\"}",
            "content_hash": "d20529d32bca85e3af6fd6f3238e48b1efe19dbb6a65dba3c6ace31f94c5fa50",
            "prev_hash": "759ffb41c6867c1aab0a6bd5d39122f4d424ce84da0cc0c299947fea5ac6d918",
            "hash": "c9a0fec7a6059282672d0aefd2cafcf6d62acaa1e5a7dd1c2dae80bf52aa168f",
            "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": null
            }
        },
        {
            "version": 10,
            "recorded_at": "2026-11-01T06:45:37Z",
            "content": "{\"cpv\": \"16700000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050589901_Zakup-piaskarki-i-pluga_2026_2.html\", \"buyer\": \"Powiat Krośnieński\", \"title\": \"Zakup piaskarki i pługa\", \"region\": \"podkarpackie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Krosno\", \"source_id\": \"20050589901\", \"deadline_at\": \"2026-11-04T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3461-0376-8075-f0a0-c4000171d9a8\"}",
            "content_hash": "74b3e0a6d72a1d92469d2b9adb726efd43de9b0a37dfc48c1e627e766e61f657",
            "prev_hash": "c9a0fec7a6059282672d0aefd2cafcf6d62acaa1e5a7dd1c2dae80bf52aa168f",
            "hash": "171f015edb295a52b2a7ec1a667994244e3b680bb9f42a635b26e99c71a160ec",
            "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": null
            }
        }
    ]
}