{
    "tender_id": 3984000,
    "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": "2026-10-29T16:39:33Z",
            "content": "{\"cpv\": \"50110000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536274/rfi-wykonanie-naprawy-czwartego-poziomu-utrzymania-naprawczego-pojazdow-trakcyjnych\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"RFI - Wykonanie naprawy czwartego poziomu utrzymania naprawczego pojazdów trakcyjnych\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536274\", \"deadline_at\": \"2026-11-05T13:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T13:00:00Z\"}",
            "content_hash": "fb4c2baa1d948d2ba8cd93b2856c8cf4a417e754a13ebb188375f8b3793657c9",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "523f7ec81ca8187a45e4d26af1a6cde631c478d6f7777b67aa98c38fe47446ac",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-29T16:45:25Z",
            "content": "{\"cpv\": \"50110000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536274/rfi-wykonanie-naprawy-czwartego-poziomu-utrzymania-naprawczego-pojazdow-trakcyjnych\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"RFI - Wykonanie naprawy czwartego poziomu utrzymania naprawczego pojazdów trakcyjnych\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536274\", \"deadline_at\": \"2026-11-05T13:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T13:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536274/rfi-wykonanie-naprawy-czwartego-poziomu-utrzymania-naprawczego-pojazdow-trakcyjnych\"}",
            "content_hash": "1871474f2ba1263d7f4dcf0e0bd53d1fb4217426b486cb71695eafb3430348ce",
            "prev_hash": "523f7ec81ca8187a45e4d26af1a6cde631c478d6f7777b67aa98c38fe47446ac",
            "hash": "e598bb2d744d211bf772322257e1e4ecc0d5d4b000a708673e386ff4f7bb332d",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T09:59:31Z",
            "content": "{\"cpv\": \"50110000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536274/rfi-wykonanie-naprawy-czwartego-poziomu-utrzymania-naprawczego-pojazdow-trakcyjnych\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"RFI - Wykonanie naprawy czwartego poziomu utrzymania naprawczego pojazdów trakcyjnych\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536274\", \"deadline_at\": \"2026-11-12T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T13:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536274/rfi-wykonanie-naprawy-czwartego-poziomu-utrzymania-naprawczego-pojazdow-trakcyjnych\"}",
            "content_hash": "a767c3ffb5c1a5445db8874c4a3e173004a1bc7f9f905638358bcd1b9787cd6b",
            "prev_hash": "e598bb2d744d211bf772322257e1e4ecc0d5d4b000a708673e386ff4f7bb332d",
            "hash": "21abb30f23c6de32ca526a06edb906ca98becd732527817b84f28864c88b8ad9",
            "actor": null,
            "seal": null
        }
    ]
}