{
    "tender_id": 2981573,
    "check": {
        "ok": true,
        "versions": 9,
        "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\": \"31515000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3848074/zakup-i-montaz-4-zestawow-lamp-uv-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-wolka\"}",
            "content_hash": "1aac48e8048d948d5df119244002801c0b394bc53753b89b2545abd1638ba1e2",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "d5a5a9998864a46efa3592752d1643ff1983303a03a7408470e5fe0a64dbadee",
            "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": "2026-10-24T14:36:20Z",
            "content": "{\"cpv\": \"31515000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df303d-8f76-77db-701a-d000016a15fb\"}",
            "content_hash": "0fbf861b7eaac577bf3bafe87c19335d0ace9b90ef948ae3515f4e9d682920a6",
            "prev_hash": "d5a5a9998864a46efa3592752d1643ff1983303a03a7408470e5fe0a64dbadee",
            "hash": "33a86604d6856d974b915ecbe3477df3735e11913cee4aef88d2aabbd495e72b",
            "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": 3,
            "recorded_at": "2026-10-25T11:36:26Z",
            "content": "{\"cpv\": \"31515000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3848074/zakup-i-montaz-4-zestawow-lamp-uv-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-wolka\"}",
            "content_hash": "1aac48e8048d948d5df119244002801c0b394bc53753b89b2545abd1638ba1e2",
            "prev_hash": "33a86604d6856d974b915ecbe3477df3735e11913cee4aef88d2aabbd495e72b",
            "hash": "ac68d4d5a1df17e8c35d66c46bc35a51b791c7ea05e5d0176da2507ed89f9629",
            "actor": null,
            "seal": {
                "id": 2,
                "digest": "6af9ff920846d2ed2fae131d9f0f0d3d71bdf63cfd98a8a18b81289d63fe5e04",
                "file": "https://tenderiq.pl/rejestr/pieczec-2.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-2.txt.ots",
                "bitcoin_block": 973147
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-25T15:37:04Z",
            "content": "{\"cpv\": \"31515000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df303d-8f76-77db-701a-d000016a15fb\"}",
            "content_hash": "0fbf861b7eaac577bf3bafe87c19335d0ace9b90ef948ae3515f4e9d682920a6",
            "prev_hash": "ac68d4d5a1df17e8c35d66c46bc35a51b791c7ea05e5d0176da2507ed89f9629",
            "hash": "313d5ce9ca6c358cde494cf0a2a11760782da665bd81bd2aad8a11a0feb632d1",
            "actor": null,
            "seal": {
                "id": 2,
                "digest": "6af9ff920846d2ed2fae131d9f0f0d3d71bdf63cfd98a8a18b81289d63fe5e04",
                "file": "https://tenderiq.pl/rejestr/pieczec-2.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-2.txt.ots",
                "bitcoin_block": 973147
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-10-26T23:36:05Z",
            "content": "{\"cpv\": \"31515000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3848074/zakup-i-montaz-4-zestawow-lamp-uv-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-wolka\"}",
            "content_hash": "1aac48e8048d948d5df119244002801c0b394bc53753b89b2545abd1638ba1e2",
            "prev_hash": "313d5ce9ca6c358cde494cf0a2a11760782da665bd81bd2aad8a11a0feb632d1",
            "hash": "d1b19b589b1bcfac967bf956015eda7bad20979ae455418cbe28b6e946729931",
            "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": 6,
            "recorded_at": "2026-10-27T05:12:05Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3848074/zakup-i-montaz-4-zestawow-lamp-uv-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-wolka\"}",
            "content_hash": "7d5440a60b01fc483b3f99a042d2651f1acdf54b4ca5c1ef127a50d29d92d865",
            "prev_hash": "d1b19b589b1bcfac967bf956015eda7bad20979ae455418cbe28b6e946729931",
            "hash": "54a789b4a21f7fe64ea219d0aedde1cb3f2197db752e173bf5e943fdfbf13c1c",
            "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": 7,
            "recorded_at": "2026-10-28T22:45:31Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df303d-8f76-77db-701a-d000016a15fb\"}",
            "content_hash": "7e9e7bfff865d7fcc615ff1e6370ba0abb724d76ad61af28bf02ff2d4a6e5af6",
            "prev_hash": "54a789b4a21f7fe64ea219d0aedde1cb3f2197db752e173bf5e943fdfbf13c1c",
            "hash": "9d4af182ab09f4208667db0e08afa07dc85788644e7e874a75afc6591f7fbbce",
            "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": 8,
            "recorded_at": "2026-10-29T05:45:41Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3848074/zakup-i-montaz-4-zestawow-lamp-uv-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-wolka\"}",
            "content_hash": "7d5440a60b01fc483b3f99a042d2651f1acdf54b4ca5c1ef127a50d29d92d865",
            "prev_hash": "9d4af182ab09f4208667db0e08afa07dc85788644e7e874a75afc6591f7fbbce",
            "hash": "e24288e264bcf15014792f13c15015e10128a2a9c31caaed01514d74638eaa96",
            "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": 9,
            "recorded_at": "2026-10-30T09:45:19Z",
            "content": "{\"cpv\": \"31122000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050206101_Zakup-i-montaz-4-zestawow-lamp-UV-do-dezynfekcji-wody-w-czterech-ujeciach-wody-na-terenie-gminy-Wolka_2026_2.html\", \"buyer\": \"Gmina Wólka\", \"title\": \"Zakup i montaż 4 zestawów lamp UV do dezynfekcji wody w czterech ujęciach wody na terenie gminy Wólka\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Jakubowice Murowane\", \"source_id\": \"20050206101\", \"deadline_at\": \"2026-10-30T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-22T00:00:00Z\"}",
            "content_hash": "4d20e051b34b092b6e40e00bad12bbe22392509cae7631e93a4d0aaa0d16daca",
            "prev_hash": "e24288e264bcf15014792f13c15015e10128a2a9c31caaed01514d74638eaa96",
            "hash": "573376aa9228119838d4dc8f6b6b1ef02042bb711adabb10c7f933b94d2867ca",
            "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
            }
        }
    ]
}