{
    "tender_id": 4020855,
    "check": {
        "ok": true,
        "versions": 4,
        "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": "2026-10-29T19:35:03Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://platformazakupowa.pl/transakcja/1394736\", \"buyer\": \"Gmina Miejska Bartoszyce\", \"title\": \"TK.271.66.2026 Zimowe utrzymanie dróg, chodników, placów, parkingów i zatok przystankowych w mieście Bartoszyce w latach 2026-2027\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"90630000\"], \"location\": \"Polska\", \"source_id\": \"1394736\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:35:07Z\", \"notice_number\": \"1394736\"}",
            "content_hash": "a80841b7da81b77ad5bffa357af9d4a1169ff61706b3af8022689db20da6062a",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "1a0b9a673c843726592211dae69328c82462919c4340d7e3d07f1eac77f09309",
            "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": "2026-10-29T19:46:03Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://platformazakupowa.pl/transakcja/1394736\", \"buyer\": \"Gmina Miejska Bartoszyce\", \"title\": \"TK.271.66.2026 Zimowe utrzymanie dróg, chodników, placów, parkingów i zatok przystankowych w mieście Bartoszyce w latach 2026-2027\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"90630000\"], \"location\": \"Polska\", \"source_id\": \"1394736\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:35:07Z\", \"notice_number\": \"1394736\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1394736\"}",
            "content_hash": "2c6693e1f529136a9d9eb562989d48ce2e3fdbeab82fd70203f9029e41bb426e",
            "prev_hash": "1a0b9a673c843726592211dae69328c82462919c4340d7e3d07f1eac77f09309",
            "hash": "a7cb6ae16f61c29ec84b858895149893915c38ff59b8a06c57cef01ebace8559",
            "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": "2026-10-29T23:47:09Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://platformazakupowa.pl/transakcja/1394736\", \"buyer\": \"Gmina Miejska Bartoszyce\", \"title\": \"TK.271.66.2026 Zimowe utrzymanie dróg, chodników, placów, parkingów i zatok przystankowych w mieście Bartoszyce w latach 2026-2027\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"90630000\"], \"location\": \"Polska\", \"source_id\": \"1394736\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T10:51:00Z\", \"notice_number\": \"1394736\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1394736\"}",
            "content_hash": "b81a1b0403c9d0168fc55be4b7ace43ab999772404040bdf3739a410bc5c9c9b",
            "prev_hash": "a7cb6ae16f61c29ec84b858895149893915c38ff59b8a06c57cef01ebace8559",
            "hash": "a0c89db097cbb3390270e19cd5c2031de1fd10cad77216a586cacdc0cb57fd01",
            "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": 4,
            "recorded_at": "2026-10-30T09:13:22Z",
            "content": "{\"cpv\": \"90620000\", \"url\": \"https://platformazakupowa.pl/transakcja/1394736\", \"buyer\": \"Gmina Miejska Bartoszyce\", \"title\": \"Zimowe utrzymanie dróg, chodników, placów, parkingów i zatok przystankowych w mieście Bartoszyce w latach 2026-2027\", \"region\": \"warminsko-mazurskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"90630000\"], \"location\": \"Polska\", \"source_id\": \"1394736\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T10:51:00Z\", \"notice_number\": \"1394736\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1394736\"}",
            "content_hash": "f19eacf8a51e62e5000cb72273b2029a6e14a47f509cdb71c567b710083c4688",
            "prev_hash": "a0c89db097cbb3390270e19cd5c2031de1fd10cad77216a586cacdc0cb57fd01",
            "hash": "2d89adc63f41e96b3a1de2f1298111983df1f8ef2dabf70636fb8c5556d5732a",
            "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
            }
        }
    ]
}