{
    "tender_id": 5257301,
    "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": "2026-11-04T21:13:08Z",
            "content": "{\"cpv\": \"42912300\", \"url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\", \"buyer\": \"De Heus Sp. z o. o.\", \"title\": \"Pompa Varisco V30-2 ST6WG+Y - Łomża\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"łódzkie\", \"source_id\": \"pl-deheus-0fbc71837b224951a2182e8f2f09456e\", \"deadline_at\": \"2026-11-11T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T12:47:00Z\"}",
            "content_hash": "fe1eb4edd30a1f0dabe4085ad8cccbcec67b5bb98463bd6fbaeca3f91b4005bb",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "840871cb33c268718081ad096356e3d224fc644ace2669966b2b29c8244e5496",
            "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": 2,
            "recorded_at": "2026-11-05T00:17:19Z",
            "content": "{\"cpv\": \"42912300\", \"url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\", \"buyer\": \"De Heus Sp. z o. o\", \"title\": \"Pompa Varisco V30-2 ST6WG+Y - Łomża\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"pl-deheus-0fbc71837b224951a2182e8f2f09456e\", \"deadline_at\": \"2026-11-11T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T16:34:00Z\"}",
            "content_hash": "bc1b733fea8990bedcf24d31d00615cb0241db566f9afae40fc0ce6fbd01b5e0",
            "prev_hash": "840871cb33c268718081ad096356e3d224fc644ace2669966b2b29c8244e5496",
            "hash": "20d41e6ff319413a0698cb6b8fd6df9e54c89170e181f9fd202f3f071464945b",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-11-05T06:45:54Z",
            "content": "{\"cpv\": \"42912300\", \"url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\", \"buyer\": \"De Heus Sp. z o. o\", \"title\": \"Pompa Varisco V30-2 ST6WG+Y - Łomża\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"pl-deheus-0fbc71837b224951a2182e8f2f09456e\", \"deadline_at\": \"2026-11-11T13:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T16:34:00Z\", \"procedure_url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\"}",
            "content_hash": "70f85ff52b2c827388053242b3b4bd57940e48f64a02a39169163448c89adb61",
            "prev_hash": "20d41e6ff319413a0698cb6b8fd6df9e54c89170e181f9fd202f3f071464945b",
            "hash": "1cf4c7a27d0ec097b01b9245a0a09989401f6538686ab6e77e6a20300fb6fe7a",
            "actor": null,
            "seal": null
        },
        {
            "version": 4,
            "recorded_at": "2026-11-05T07:41:08Z",
            "content": "{\"cpv\": \"42912300\", \"url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\", \"buyer\": \"De Heus Sp. z o. o.\", \"title\": \"Pompa Varisco V30-2 ST6WG+Y - Łomża\", \"region\": \"lodzkie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"łódzkie\", \"source_id\": \"pl-deheus-0fbc71837b224951a2182e8f2f09456e\", \"deadline_at\": \"2026-11-09T08:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T12:47:00Z\", \"procedure_url\": \"https://pl-deheus.logintrade.net/portal,szczegolyZapytaniaOfertowe,0fbc71837b224951a2182e8f2f09456e.html\"}",
            "content_hash": "bb0c4b512767eb4fa8b640af1964d33441d02e256d5aa2945fb512e0e79aa2f3",
            "prev_hash": "1cf4c7a27d0ec097b01b9245a0a09989401f6538686ab6e77e6a20300fb6fe7a",
            "hash": "85208c0230e73311af1147aea74d921671a04c996af0d46ff1b8fbc620c81b43",
            "actor": null,
            "seal": null
        }
    ]
}