{
    "tender_id": 4066600,
    "check": {
        "ok": true,
        "versions": 2,
        "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": "2026-10-30T02:11:05Z",
            "content": "{\"cpv\": \"90910000\", \"url\": \"https://owg.eb2b.com.pl/open-preview-auction.html/536120/usluga-sprzatania-lokali-w-warszawskim-osrodku-interwencji-kryzysowej-2\", \"buyer\": \"WARSZAWSKI OŚRODEK INTERWENCJI KRYZYSOWEJ\", \"title\": \"Usługa sprzątania lokali w Warszawskim Ośrodku Interwencji Kryzysowej\", \"region\": \"mazowieckie\", \"source\": \"owg_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536120\", \"deadline_at\": \"2026-11-09T07:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T21:00:00Z\"}",
            "content_hash": "72f7b0b9018e81ba10f2e91da596fbcc66ba743a7e519f3e8627b6dd94c930f7",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "1a1ab05187a435b7cdcde544c80174cb706c825cc774d7d677d81d685c799ca7",
            "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": "2026-10-30T02:45:33Z",
            "content": "{\"cpv\": \"90910000\", \"url\": \"https://owg.eb2b.com.pl/open-preview-auction.html/536120/usluga-sprzatania-lokali-w-warszawskim-osrodku-interwencji-kryzysowej-2\", \"buyer\": \"WARSZAWSKI OŚRODEK INTERWENCJI KRYZYSOWEJ\", \"title\": \"Usługa sprzątania lokali w Warszawskim Ośrodku Interwencji Kryzysowej\", \"region\": \"mazowieckie\", \"source\": \"owg_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536120\", \"deadline_at\": \"2026-11-09T07:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T21:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536120/usluga-sprzatania-lokali-w-warszawskim-osrodku-interwencji-kryzysowej-2\"}",
            "content_hash": "cfa6b6f168718f3b03b132bd64cc4693ccc1b59c6ebb0ab3fb83d302269cdc83",
            "prev_hash": "1a1ab05187a435b7cdcde544c80174cb706c825cc774d7d677d81d685c799ca7",
            "hash": "fe2eff65d569ca0c0d0a88b4e1afb86514075c363f5b582865bff573cd49f1b4",
            "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
            }
        }
    ]
}