{
    "tender_id": 5257175,
    "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": "2026-11-04T21:13:01Z",
            "content": "{\"cpv\": \"45332000\", \"url\": \"https://platforma-kopalniawieliczka.logintrade.net/portal,szczegolyZapytaniaOfertowe,ce8e85f460d1f05e8d8e14e9486fa32e.html\", \"buyer\": \"Kopalnia Soli \\\"Wieliczka\\\" S.A.\", \"title\": \"Grzejnik olejowy Ravanson Oh-09 2000 W biały, termowentylator MILLA HOME MFH104\", \"region\": \"malopolskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"platforma-kopalniawieliczka-ce8e85f460d1f05e8d8e14e9486fa32e\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T07:03:00Z\"}",
            "content_hash": "8f58809150ea2e1d48acf56905481238a074ae3dce64ae42f1cb466822683f7c",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "8a368569ddc2adc829e31bcd22d291673f2f5b423b881a265b2919f1c8cffdc1",
            "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": "2026-11-05T00:17:55Z",
            "content": "{\"cpv\": \"39715200\", \"url\": \"https://platforma-kopalniawieliczka.logintrade.net/portal,szczegolyZapytaniaOfertowe,ce8e85f460d1f05e8d8e14e9486fa32e.html\", \"buyer\": \"Kopalnia Soli \\\"Wieliczka\\\" S.A\", \"title\": \"Grzejnik olejowy, termowentylator\", \"region\": \"malopolskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"platforma-kopalniawieliczka-ce8e85f460d1f05e8d8e14e9486fa32e\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T11:05:00Z\"}",
            "content_hash": "199bf4d3453cc3d1f8681585681b1d9cf7a3b1896d95107a28836fdb36ca2de7",
            "prev_hash": "8a368569ddc2adc829e31bcd22d291673f2f5b423b881a265b2919f1c8cffdc1",
            "hash": "9590f39270855bb25e3d0a2275fa2d55aae75f9c84f94a571dca3b4fa9b3fb19",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-05T06:45:56Z",
            "content": "{\"cpv\": \"39715200\", \"url\": \"https://platforma-kopalniawieliczka.logintrade.net/portal,szczegolyZapytaniaOfertowe,ce8e85f460d1f05e8d8e14e9486fa32e.html\", \"buyer\": \"Kopalnia Soli \\\"Wieliczka\\\" S.A\", \"title\": \"Grzejnik olejowy, termowentylator\", \"region\": \"malopolskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"platforma-kopalniawieliczka-ce8e85f460d1f05e8d8e14e9486fa32e\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-04T11:05:00Z\", \"procedure_url\": \"https://platforma-kopalniawieliczka.logintrade.net/portal,szczegolyZapytaniaOfertowe,ce8e85f460d1f05e8d8e14e9486fa32e.html\"}",
            "content_hash": "1205be52a83dfb204cff6db7f8c66a622c58c7a1806f497127ad83185e424dd6",
            "prev_hash": "9590f39270855bb25e3d0a2275fa2d55aae75f9c84f94a571dca3b4fa9b3fb19",
            "hash": "3fe7b6f63bf892cec7cfc6781e0ed377c1d7990156a96e7f6d802a6497b76872",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        }
    ]
}