{
    "tender_id": 3348338,
    "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": "2026-10-26T08:31:25Z",
            "content": "{\"cpv\": \"09123000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/738446-2026\", \"buyer\": \"Dzielnicowe Biuro Finansów Oświaty – Śródmieście m.st. Warszawy\", \"title\": \"Polska – Gaz ziemny – Zakup paliwa gazowego, obejmujący dystrybucję i zakup gazu dla szkół i placówek oświatowych Dzielnicy Śródmieście m. st. Warszawy\", \"region\": \"mazowieckie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL911, POL, PL911, POL\", \"buyer_nip\": \"5261051884\", \"source_id\": \"738446-2026\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\"}",
            "content_hash": "6de3b322a136ea0b4b4dc6c751d0c4974ec76127821d311fb845b80533d3da4f",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "18388b92a0089f69ab05190ba755caaeef72b78fda78570f2280b2058f9b264f",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:35:23Z",
            "content": "{\"cpv\": \"09123000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/738446-2026\", \"buyer\": \"Dzielnicowe Biuro Finansów Oświaty – Śródmieście m.st. Warszawy\", \"title\": \"Polska – Gaz ziemny – Zakup paliwa gazowego, obejmujący dystrybucję i zakup gazu dla szkół i placówek oświatowych Dzielnicy Śródmieście m. st. Warszawy\", \"region\": \"mazowieckie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL911, POL, PL911, POL\", \"buyer_nip\": \"5261051884\", \"source_id\": \"738446-2026\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-26T01:00:00Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1387447\"}",
            "content_hash": "f2c63151362dffeb15cb449b143ee994136d256fb643e022fd1318b1ec124f7b",
            "prev_hash": "18388b92a0089f69ab05190ba755caaeef72b78fda78570f2280b2058f9b264f",
            "hash": "781ee6dbd7a09daa2cee44d5a107f4b6e03e4553e23fcd8b2d90b461aeac9455",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        }
    ]
}