{
    "tender_id": 3939435,
    "check": {
        "ok": true,
        "versions": 6,
        "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": "2026-10-29T13:18:19Z",
            "content": "{\"cpv\": \"79810000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"buyer_nip\": \"9531011863\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\"}",
            "content_hash": "2cb01cc176f12db6ea59720523a00ee8e2b74539ecebb4c6dfdf428f4bbe555d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "78d37ba2902745795c494fce3275967aec1431f0412d70ccf7bd13aa4c753ded",
            "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": "2026-10-29T13:45:48Z",
            "content": "{\"cpv\": \"79810000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"buyer_nip\": \"9531011863\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1400339\"}",
            "content_hash": "9d539aacd616245a4bf37ced8f9787d4ab1901c488ba099fafed8b5137d0e87e",
            "prev_hash": "78d37ba2902745795c494fce3275967aec1431f0412d70ccf7bd13aa4c753ded",
            "hash": "3a3cce74b6b95d196707cdc06b0e573dc0937d574e2588da1bbfc8d5fd7737e3",
            "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": "2026-10-29T14:21:05Z",
            "content": "{\"cpv\": \"79800000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1400339\"}",
            "content_hash": "90cd3a2895e92137e540373082af8a3910ec59356bbb88d1491dc0042c2972f2",
            "prev_hash": "3a3cce74b6b95d196707cdc06b0e573dc0937d574e2588da1bbfc8d5fd7737e3",
            "hash": "c1a3f1257245eb3866f524f480cfc5675200e181bed84a2c57604b8f4aa0a46b",
            "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": "2026-10-29T15:23:17Z",
            "content": "{\"cpv\": \"79810000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"buyer_nip\": \"9531011863\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1400339\"}",
            "content_hash": "9d539aacd616245a4bf37ced8f9787d4ab1901c488ba099fafed8b5137d0e87e",
            "prev_hash": "c1a3f1257245eb3866f524f480cfc5675200e181bed84a2c57604b8f4aa0a46b",
            "hash": "9d6d4ff222b1f79fc8a5734b424519c51ffff16eecb0ae53993421f58b8c6a78",
            "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": "2026-10-29T15:30:08Z",
            "content": "{\"cpv\": \"79810000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"buyer_nip\": \"9531011863\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1392964\"}",
            "content_hash": "a017fdb539ce0367c2888d137cce1bbdbebe173748ae0e6432d2c9866b86f3fb",
            "prev_hash": "9d6d4ff222b1f79fc8a5734b424519c51ffff16eecb0ae53993421f58b8c6a78",
            "hash": "c89daa5bf486a812dfbcbd0be2ef7102fe34c34d509342c3ea5b5586c3a021c4",
            "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": "2026-10-30T01:41:59Z",
            "content": "{\"cpv\": \"79800000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35b1-b227-d410-cfcf-e60001c063b6\", \"buyer\": \"Miasto Bydgoszcz\", \"title\": \"Druk materiałów informacyjnych Urzędu Miasta Bydgoszczy\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Bydgoszcz, kujawsko-pomorskie\", \"source_id\": \"2026/BZP 00508963/01\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:42:22Z\", \"notice_number\": \"2026/BZP 00508963/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1392964\"}",
            "content_hash": "6b0b3ac321c6559ecc8ba2c4786ec06d3308ade062c9cb1c69ad24780f4c12e9",
            "prev_hash": "c89daa5bf486a812dfbcbd0be2ef7102fe34c34d509342c3ea5b5586c3a021c4",
            "hash": "30cec84eba20868e5f4dd2b0b229f07cdfd57305cf63c1eb7a3122f90d4e12c6",
            "actor": null,
            "seal": null
        }
    ]
}