{
    "tender_id": 4992389,
    "check": {
        "ok": true,
        "versions": 3,
        "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": "2026-11-03T13:11:50Z",
            "content": "{\"cpv\": \"30200000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df39a1-1e10-5f83-e2d6-6b000120da51\", \"buyer\": \"INSTYTUT MASZYN PRZEPŁYWOWYCH IM.ROBERTA SZEWALSKIEGO POLSKIEJ AKADEMII NAUK\", \"title\": \"dostawa sprzętu komputerowego\", \"region\": \"pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"32420000\", \"30231310\", \"30213100\"], \"location\": \"Gdańsk, pomorskie\", \"buyer_nip\": \"5840357882\", \"source_id\": \"2026/BZP 00519150/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:53:47Z\", \"notice_number\": \"2026/BZP 00519150/01\"}",
            "content_hash": "60fcc7b2dbed42506167bb4fb73708b0c505af9a680263f2ae5e136dad230f5e",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "6514c304e95454af1b7455af50b0ea92b3d62d3d7680fa9d352a125e82ad5066",
            "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": null
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-03T14:45:46Z",
            "content": "{\"cpv\": \"30200000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df39a1-1e10-5f83-e2d6-6b000120da51\", \"buyer\": \"INSTYTUT MASZYN PRZEPŁYWOWYCH IM.ROBERTA SZEWALSKIEGO POLSKIEJ AKADEMII NAUK\", \"title\": \"dostawa sprzętu komputerowego\", \"region\": \"pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"32420000\", \"30231310\", \"30213100\"], \"location\": \"Gdańsk, pomorskie\", \"buyer_nip\": \"5840357882\", \"source_id\": \"2026/BZP 00519150/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:53:47Z\", \"notice_number\": \"2026/BZP 00519150/01\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df39a1-1e10-5f83-e2d6-6b000120da51\"}",
            "content_hash": "3972dcc07cf8f6b6dd779c92e069832dee19cd9128ea041ac1417f286f9cc27a",
            "prev_hash": "6514c304e95454af1b7455af50b0ea92b3d62d3d7680fa9d352a125e82ad5066",
            "hash": "46f7c80d097d57a2a51a777138e7ba54092d32a3d50f993fc809314dbaae8545",
            "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": null
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-03T20:45:27Z",
            "content": "{\"cpv\": \"30200000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df39a1-1e10-5f83-e2d6-6b000120da51\", \"buyer\": \"INSTYTUT MASZYN PRZEPŁYWOWYCH IM.ROBERTA SZEWALSKIEGO POLSKIEJ AKADEMII NAUK\", \"title\": \"dostawa sprzętu komputerowego\", \"region\": \"pomorskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"32420000\", \"30231310\", \"30213100\"], \"location\": \"Gdańsk, pomorskie\", \"buyer_nip\": \"5840357882\", \"source_id\": \"2026/BZP 00519150/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:53:47Z\", \"notice_number\": \"2026/BZP 00519150/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1403099\"}",
            "content_hash": "3e747971d366f8400210377a65ca546cff1796adc0d669e37b8038251cc2be11",
            "prev_hash": "46f7c80d097d57a2a51a777138e7ba54092d32a3d50f993fc809314dbaae8545",
            "hash": "203393509b13d43e6462bb61a86289db81d1b8350a6f3a4a909fea6926b2998d",
            "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": null
            }
        }
    ]
}