{
    "tender_id": 4334470,
    "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": "2026-10-31T12:08:40Z",
            "content": "{\"cpv\": \"42961100\", \"url\": \"https://www.przetargi.egospodarka.pl/20051431201_Modernizacja-systemu-kontroli_2026_2.html\", \"buyer\": \"NAUKOWA I AKADEMICKA SIEĆ KOMPUTEROWA - PAŃSTWOWY INSTYTUT BADAWCZY\", \"title\": \"Modernizacja systemu kontroli\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"45314300\", \"72268000\", \"30163000\", \"42962000\"], \"location\": \"Warszawa\", \"source_id\": \"20051431201\", \"deadline_at\": \"2026-11-13T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T00:00:00Z\"}",
            "content_hash": "b9691c34552b52c0b982509bea7f6119c959f697c99de188ffa3961cb7b860e4",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "478c3efca7df6d4c6e73ffa130ab369d60b5296dfb681500e14b0066f0e66245",
            "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": 2,
            "recorded_at": "2026-10-31T12:45:33Z",
            "content": "{\"cpv\": \"42961100\", \"url\": \"https://www.przetargi.egospodarka.pl/20051431201_Modernizacja-systemu-kontroli_2026_2.html\", \"buyer\": \"NAUKOWA I AKADEMICKA SIEĆ KOMPUTEROWA - PAŃSTWOWY INSTYTUT BADAWCZY\", \"title\": \"Modernizacja systemu kontroli\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"45314300\", \"72268000\", \"30163000\", \"42962000\"], \"location\": \"Warszawa\", \"source_id\": \"20051431201\", \"deadline_at\": \"2026-11-13T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3865365/modernizacja-systemu-kontroli\"}",
            "content_hash": "388f38db6669589f84ef85ab9e3b8909ce35c080f8f5c089301794c8a7ea8ee8",
            "prev_hash": "478c3efca7df6d4c6e73ffa130ab369d60b5296dfb681500e14b0066f0e66245",
            "hash": "15d607fc5cb6cec7534e0cc2dac274ebf4864e6003f4fcb9f90feffd5ccb20f2",
            "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": 3,
            "recorded_at": "2026-10-31T17:45:17Z",
            "content": "{\"cpv\": \"42961100\", \"url\": \"https://www.przetargi.egospodarka.pl/20051431201_Modernizacja-systemu-kontroli_2026_2.html\", \"buyer\": \"NAUKOWA I AKADEMICKA SIEĆ KOMPUTEROWA - PAŃSTWOWY INSTYTUT BADAWCZY\", \"title\": \"Modernizacja systemu kontroli\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"45314300\", \"72268000\", \"30163000\", \"42962000\"], \"location\": \"Warszawa\", \"source_id\": \"20051431201\", \"deadline_at\": \"2026-11-13T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3692-f31e-7176-e2d6-6b000120ba84\"}",
            "content_hash": "3d50932b48506eeb38fb8a98fbf2846cae85839a36f06623cefa9c466fe31d94",
            "prev_hash": "15d607fc5cb6cec7534e0cc2dac274ebf4864e6003f4fcb9f90feffd5ccb20f2",
            "hash": "af20e4b2987d1cf421b6530c024ab5595812079949ea752bb567779658f74f72",
            "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": "2026-11-01T00:45:41Z",
            "content": "{\"cpv\": \"42961100\", \"url\": \"https://www.przetargi.egospodarka.pl/20051431201_Modernizacja-systemu-kontroli_2026_2.html\", \"buyer\": \"NAUKOWA I AKADEMICKA SIEĆ KOMPUTEROWA - PAŃSTWOWY INSTYTUT BADAWCZY\", \"title\": \"Modernizacja systemu kontroli\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"45314300\", \"72268000\", \"30163000\", \"42962000\"], \"location\": \"Warszawa\", \"source_id\": \"20051431201\", \"deadline_at\": \"2026-11-13T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3865365/modernizacja-systemu-kontroli\"}",
            "content_hash": "388f38db6669589f84ef85ab9e3b8909ce35c080f8f5c089301794c8a7ea8ee8",
            "prev_hash": "af20e4b2987d1cf421b6530c024ab5595812079949ea752bb567779658f74f72",
            "hash": "34f1bcabcd881faf93df59a726a1e05cc27d0c1d76cc1a97e89483142b609001",
            "actor": null,
            "seal": null
        }
    ]
}