{
    "tender_id": 4970977,
    "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": "2026-11-03T10:02:46Z",
            "content": "{\"cpv\": \"09331200\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df398a-33d5-e65c-e2d6-6b000120d4c7\", \"buyer\": \"GMINA WITNICA\", \"title\": \"Wykonanie robót budowlanych polegających na dostawie i montażu instalacji fotowoltaicznej wraz z magazynem energii w budynku Regionalnego Centrum Ratownictwa w Witnicy\", \"region\": \"lubuskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"09332000\", \"09331000\", \"09310000\", \"09330000\", \"45311000\", \"45310000\", \"45000000\", \"71314100\"], \"location\": \"Witnica, lubuskie\", \"source_id\": \"2026/BZP 00518105/01\", \"deadline_at\": \"2026-11-20T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:09:44Z\", \"notice_number\": \"2026/BZP 00518105/01\"}",
            "content_hash": "5e9a5af00baf01f33fc724dff8b9fbb03b81e29d37821b6b796aac2b3942e9d0",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "013f76120531d2bb846050207751d43aa6093ed9c58e0707004fc3f16299f7e7",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T11:01:12Z",
            "content": "{\"cpv\": \"09331200\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df398a-33d5-e65c-e2d6-6b000120d4c7\", \"buyer\": \"GMINA WITNICA\", \"title\": \"Wykonanie robót budowlanych polegających na dostawie i montażu instalacji fotowoltaicznej wraz z magazynem energii w budynku Regionalnego Centrum Ratownictwa w Witnicy\", \"region\": \"lubuskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"09332000\", \"09331000\", \"09310000\", \"09330000\", \"45311000\", \"45310000\", \"45000000\", \"71314100\"], \"location\": \"Witnica, lubuskie\", \"buyer_nip\": \"5992771311\", \"source_id\": \"2026/BZP 00518105/01\", \"deadline_at\": \"2026-11-20T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:09:44Z\", \"notice_number\": \"2026/BZP 00518105/01\"}",
            "content_hash": "9532a99ec60c0cb18e1d9d6818a0bee672506faaf4d60b3b33d5093c03aa0dee",
            "prev_hash": "013f76120531d2bb846050207751d43aa6093ed9c58e0707004fc3f16299f7e7",
            "hash": "e8082c60f48177f09b82ae0c32ae357c1bbdc1c24e3791cab0e797fb5d92758e",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T05:45:31Z",
            "content": "{\"cpv\": \"09331200\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df398a-33d5-e65c-e2d6-6b000120d4c7\", \"buyer\": \"GMINA WITNICA\", \"title\": \"Wykonanie robót budowlanych polegających na dostawie i montażu instalacji fotowoltaicznej wraz z magazynem energii w budynku Regionalnego Centrum Ratownictwa w Witnicy\", \"region\": \"lubuskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"09332000\", \"09331000\", \"09310000\", \"09330000\", \"45311000\", \"45310000\", \"45000000\", \"71314100\"], \"location\": \"Witnica, lubuskie\", \"buyer_nip\": \"5992771311\", \"source_id\": \"2026/BZP 00518105/01\", \"deadline_at\": \"2026-11-20T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:09:44Z\", \"notice_number\": \"2026/BZP 00518105/01\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df398a-33d5-e65c-e2d6-6b000120d4c7\"}",
            "content_hash": "704d0ff07f9cce9a90a8c22d2e5d800a3b50256479b96bc9d50307393da9d961",
            "prev_hash": "e8082c60f48177f09b82ae0c32ae357c1bbdc1c24e3791cab0e797fb5d92758e",
            "hash": "1d535c652121dc3446a2fbebf10c13c1a8f7b1378495f2582474428df12e6686",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-04T16:45:44Z",
            "content": "{\"cpv\": \"09331200\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df398a-33d5-e65c-e2d6-6b000120d4c7\", \"buyer\": \"GMINA WITNICA\", \"title\": \"Wykonanie robót budowlanych polegających na dostawie i montażu instalacji fotowoltaicznej wraz z magazynem energii w budynku Regionalnego Centrum Ratownictwa w Witnicy\", \"region\": \"lubuskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"09332000\", \"09331000\", \"09310000\", \"09330000\", \"45311000\", \"45310000\", \"45000000\", \"71314100\"], \"location\": \"Witnica, lubuskie\", \"buyer_nip\": \"5992771311\", \"source_id\": \"2026/BZP 00518105/01\", \"deadline_at\": \"2026-11-20T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T09:09:44Z\", \"notice_number\": \"2026/BZP 00518105/01\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3871180/wykonanie-robot-budowlanych-polegajacych-na-dostawie-i-montazu-instalacji-fotowoltaicznej-wraz-z-magazynem-energii-w-budynku\"}",
            "content_hash": "58db5044c4d33d7a3c8cef21cf76d64ec886c4b790066910b281f0d540af58c5",
            "prev_hash": "1d535c652121dc3446a2fbebf10c13c1a8f7b1378495f2582474428df12e6686",
            "hash": "d045b503de2ec89813ebc146798e8bd92f2754a9a05fa952b40cd6b521df95d5",
            "actor": null,
            "seal": {
                "id": 12,
                "digest": "e23c0f5a7e440e937f514487a150dc1be40887f39a941304e364e5e94a4b77fc",
                "file": "https://tenderiq.pl/rejestr/pieczec-12.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-12.txt.ots",
                "bitcoin_block": 974604
            }
        }
    ]
}