{
    "tender_id": 5048431,
    "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": "2026-11-03T20:48:45Z",
            "content": "{\"cpv\": \"14211000\", \"url\": \"https://platforma-weglokoksenergia.logintrade.net/portal,szczegolyZapytaniaOfertowe,cf2c2fcaef2ae2cd1507e9c9a1ae8cc6.html\", \"buyer\": \"WĘGLOKOKS ENERGIA Sp. z o.o.\", \"title\": \"Zapytanie o cenę w zakresie zakupu i dostawy piasku płukanego do murowania dla WĘGLOKOKS ENERGIA ZCP sp. z o.o. (nr wew. 1186)\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"śląskie\", \"source_id\": \"platforma-weglokoksenergia-cf2c2fcaef2ae2cd1507e9c9a1ae8cc6\", \"deadline_at\": \"2026-11-05T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T08:45:00Z\"}",
            "content_hash": "cd6b3a7b198e88126975f113510dfa5f10f5edd3aa4b12ca299ee0f672809156",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "b1ebe55621b5dddd75d0eb07e68d9573b77a611d8c134d93f570ca9c00672814",
            "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": "2026-11-04T00:38:01Z",
            "content": "{\"cpv\": \"14211000\", \"url\": \"https://platforma-weglokoksenergia.logintrade.net/portal,szczegolyZapytaniaOfertowe,cf2c2fcaef2ae2cd1507e9c9a1ae8cc6.html\", \"buyer\": \"WĘGLOKOKS ENERGIA Sp. z o.o\", \"title\": \"Zapytanie o cenę w zakresie zakupu i dostawy piasku płukanego do murowania\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"platforma-weglokoksenergia-cf2c2fcaef2ae2cd1507e9c9a1ae8cc6\", \"deadline_at\": \"2026-11-05T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T12:01:00Z\"}",
            "content_hash": "8eda19bb9e983879e3d208ad0ebc4904ffb3bb47d800007efd1f8a8dec873581",
            "prev_hash": "b1ebe55621b5dddd75d0eb07e68d9573b77a611d8c134d93f570ca9c00672814",
            "hash": "c983b941412d9eb4a4fff9163d89af09d3ba9efba80fafbe76a887e21f0b0904",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T10:46:23Z",
            "content": "{\"cpv\": \"14211000\", \"url\": \"https://platforma-weglokoksenergia.logintrade.net/portal,szczegolyZapytaniaOfertowe,cf2c2fcaef2ae2cd1507e9c9a1ae8cc6.html\", \"buyer\": \"WĘGLOKOKS ENERGIA Sp. z o.o\", \"title\": \"Zapytanie o cenę w zakresie zakupu i dostawy piasku płukanego do murowania\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"platforma-weglokoksenergia-cf2c2fcaef2ae2cd1507e9c9a1ae8cc6\", \"deadline_at\": \"2026-11-05T12:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-03T12:01:00Z\", \"procedure_url\": \"https://platforma-weglokoksenergia.logintrade.net/portal,szczegolyZapytaniaOfertowe,cf2c2fcaef2ae2cd1507e9c9a1ae8cc6.html\"}",
            "content_hash": "4b2a4a65ef9e28add7dae1b94d838e636719d6f23f43524208c1dd8332b01f4b",
            "prev_hash": "c983b941412d9eb4a4fff9163d89af09d3ba9efba80fafbe76a887e21f0b0904",
            "hash": "8c8cdd75839244ab16c68cdc3dc90436dea7916cce6ca9b1c2212f8023fd6ac2",
            "actor": null,
            "seal": null
        }
    ]
}