{
    "tender_id": 3730886,
    "check": {
        "ok": true,
        "versions": 5,
        "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": "2026-10-28T06:49:53Z",
            "content": "{\"cpv\": \"38433000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050587501_Dostawa-spektrometru-FTIR-z-wyposazeniem_2026_2.html\", \"buyer\": \"INSTYTUT GEOFIZYKI POLSKIEJ AKADEMII NAUK\", \"title\": \"Dostawa spektrometru FTIR z wyposażeniem\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"48461000\", \"30213300\"], \"location\": \"Warszawa\", \"source_id\": \"20050587501\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\"}",
            "content_hash": "f2966121898b3cce9e0adf30a8656a6348c69347f00a2c52c546907413dfc799",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "47ad4878284d3a1e8d9ff20d8309bf08ae0ec95be6bb4d0a1048738e7f4f2897",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T08:45:19Z",
            "content": "{\"cpv\": \"38433000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050587501_Dostawa-spektrometru-FTIR-z-wyposazeniem_2026_2.html\", \"buyer\": \"INSTYTUT GEOFIZYKI POLSKIEJ AKADEMII NAUK\", \"title\": \"Dostawa spektrometru FTIR z wyposażeniem\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"48461000\", \"30213300\"], \"location\": \"Warszawa\", \"source_id\": \"20050587501\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856356/dostawa-spektrometru-ftir-z-wyposazeniem\"}",
            "content_hash": "2ecaa06628fa3f0e15c14f63e2b3da3abcea1b0fbb4c1e015096d02dc33e5de7",
            "prev_hash": "47ad4878284d3a1e8d9ff20d8309bf08ae0ec95be6bb4d0a1048738e7f4f2897",
            "hash": "362b620337b5eb91fb9fcbd91c62536906fd0d35cf878fd3917832b609f3d44e",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-28T22:45:45Z",
            "content": "{\"cpv\": \"38433000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050587501_Dostawa-spektrometru-FTIR-z-wyposazeniem_2026_2.html\", \"buyer\": \"INSTYTUT GEOFIZYKI POLSKIEJ AKADEMII NAUK\", \"title\": \"Dostawa spektrometru FTIR z wyposażeniem\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"48461000\", \"30213300\"], \"location\": \"Warszawa\", \"source_id\": \"20050587501\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df345b-1a52-7373-f0a0-c4000171d978\"}",
            "content_hash": "e463c8abad6034774546974c39fe3e8d3c23b3a227a0a9320137eaf4a4e34518",
            "prev_hash": "362b620337b5eb91fb9fcbd91c62536906fd0d35cf878fd3917832b609f3d44e",
            "hash": "65e090d08dc4d9ecf2d36f3da6284be7499de395373028fc9476b2b88bab4899",
            "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": "2026-10-29T05:45:39Z",
            "content": "{\"cpv\": \"38433000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050587501_Dostawa-spektrometru-FTIR-z-wyposazeniem_2026_2.html\", \"buyer\": \"INSTYTUT GEOFIZYKI POLSKIEJ AKADEMII NAUK\", \"title\": \"Dostawa spektrometru FTIR z wyposażeniem\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [\"48461000\", \"30213300\"], \"location\": \"Warszawa\", \"source_id\": \"20050587501\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856356/dostawa-spektrometru-ftir-z-wyposazeniem\"}",
            "content_hash": "2ecaa06628fa3f0e15c14f63e2b3da3abcea1b0fbb4c1e015096d02dc33e5de7",
            "prev_hash": "65e090d08dc4d9ecf2d36f3da6284be7499de395373028fc9476b2b88bab4899",
            "hash": "c02e8583abd6b7223330cd35056eee931f19304c00ac5c12228cc8e633da66f4",
            "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": "2026-10-30T00:25:03Z",
            "content": "{\"cpv\": \"38433000\", \"url\": \"https://www.przetargi.egospodarka.pl/20050587501_Dostawa-spektrometru-FTIR-z-wyposazeniem_2026_2.html\", \"buyer\": \"INSTYTUT GEOFIZYKI POLSKIEJ AKADEMII NAUK\", \"title\": \"Dostawa spektrometru FTIR z wyposażeniem\", \"region\": \"mazowieckie\", \"source\": \"egospodarka_przetargi\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa\", \"source_id\": \"20050587501\", \"deadline_at\": \"2026-11-06T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-27T00:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3856356/dostawa-spektrometru-ftir-z-wyposazeniem\"}",
            "content_hash": "d80ef4e71a80d2bae1497386a4d014044309c440fff20d57f07c0ae2d4ad2ff1",
            "prev_hash": "c02e8583abd6b7223330cd35056eee931f19304c00ac5c12228cc8e633da66f4",
            "hash": "9e15355014fd228bc010bbed57e608e26767c75b22b648eb3724f500adcaad7c",
            "actor": null,
            "seal": null
        }
    ]
}