{
    "tender_id": 4194632,
    "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": "2026-10-30T18:12:47Z",
            "content": "{\"cpv\": \"44165100\", \"url\": \"https://cognor.logintrade.net/portal,szczegolyZapytaniaOfertowe,3c53a22dfa8e700526f72ed8c540615c.html\", \"buyer\": \"Cognor SA oddział Ferrostal Łabędy w Gliwicach\", \"title\": \"194312 / FE / Hydraulika: WĘŻE SORPCYJNE - HYDROFOBOWE DLA COGNOR GLIWICE\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"śląskie\", \"source_id\": \"cognor-3c53a22dfa8e700526f72ed8c540615c\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T11:31:00Z\"}",
            "content_hash": "f5b1c99147d135f41af95cf762b774f756182c6a580d03bd41a43689f4aeeaca",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "b5de9b5b633aa0b814af74dcf0f86a289cf8a3ee533b07328246a3eabe439cf4",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-31T01:48:15Z",
            "content": "{\"cpv\": \"44165100\", \"url\": \"https://cognor.logintrade.net/portal,szczegolyZapytaniaOfertowe,3c53a22dfa8e700526f72ed8c540615c.html\", \"buyer\": \"Cognor SA oddział Ferrostal Łabędy w Gliwicach\", \"title\": \"194312 / FE / Hydraulika: WĘŻE SORPCYJNE - HYDROFOBOWE DLA COGNOR GLIWICE\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"cognor-3c53a22dfa8e700526f72ed8c540615c\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T15:48:00Z\"}",
            "content_hash": "8038be40903413c7bdafda96876e4d1080d4accf45afb73c1d743467062aa694",
            "prev_hash": "b5de9b5b633aa0b814af74dcf0f86a289cf8a3ee533b07328246a3eabe439cf4",
            "hash": "5d94a8643cd5b87468449327ce1638c78a37712f90bc2705e7655ee9be8e2e85",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-31T10:45:45Z",
            "content": "{\"cpv\": \"44165100\", \"url\": \"https://cognor.logintrade.net/portal,szczegolyZapytaniaOfertowe,3c53a22dfa8e700526f72ed8c540615c.html\", \"buyer\": \"Cognor SA oddział Ferrostal Łabędy w Gliwicach\", \"title\": \"194312 / FE / Hydraulika: WĘŻE SORPCYJNE - HYDROFOBOWE DLA COGNOR GLIWICE\", \"region\": \"slaskie\", \"source\": \"logintrade_central\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"cognor-3c53a22dfa8e700526f72ed8c540615c\", \"deadline_at\": \"2026-11-06T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T15:48:00Z\", \"procedure_url\": \"https://cognor.logintrade.net/portal,szczegolyZapytaniaOfertowe,3c53a22dfa8e700526f72ed8c540615c.html\"}",
            "content_hash": "b0db62d0f374d2777bd6957cc69095f3d7e50f864ddd5852d244c5d2c34e6e47",
            "prev_hash": "5d94a8643cd5b87468449327ce1638c78a37712f90bc2705e7655ee9be8e2e85",
            "hash": "65ad16d4263c9741e4f8abde1ec8b9cda619ca199a0c2ca3f72c28a1cdab5437",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        }
    ]
}