{
    "tender_id": 3555062,
    "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": "2026-10-27T11:15:07Z",
            "content": "{\"cpv\": \"33140000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/742542-2026\", \"buyer\": \"Wojewódzki Szpital Zespolony im. Romana Ostrzyckiego w Koninie\", \"title\": \"Polska – Materiały medyczne – WSZ-EP-40/2026 „Dostawa wyrobów medycznych dla potrzeb Radiologii Zabiegowej oraz zabiegów endowaskularnych w chorobach naczyń mózgowych”\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL414, POL, PL414, PL414, POL, POL\", \"buyer_nip\": \"6651042675\", \"source_id\": \"742542-2026\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\"}",
            "content_hash": "1d77f3557d53122b4bd8dbbc690d3fb3a45b3b55e9c906bd3f2fef21750c5877",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "11686354623e2f8ff8ec7a9d20e04a1c8af9c4014f5ed5c37d81a680b95cc8f6",
            "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
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-27T11:33:53Z",
            "content": "{\"cpv\": \"33140000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/742542-2026\", \"buyer\": \"Wojewódzki Szpital Zespolony im. Romana Ostrzyckiego w Koninie\", \"title\": \"Polska – Materiały medyczne – WSZ-EP-40/2026 „Dostawa wyrobów medycznych dla potrzeb Radiologii Zabiegowej oraz zabiegów endowaskularnych w chorobach naczyń mózgowych”\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL414, POL, PL414, PL414, POL, POL\", \"buyer_nip\": \"6651042675\", \"source_id\": \"742542-2026\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\", \"procedure_url\": \"https://ted.europa.eu/pl/notice/-/detail/742542-2026\"}",
            "content_hash": "52b9f88e2324f10ebce3b239e719d4bf64601b0a56106f27860846148996ba15",
            "prev_hash": "11686354623e2f8ff8ec7a9d20e04a1c8af9c4014f5ed5c37d81a680b95cc8f6",
            "hash": "fc7d20d5ef69a464e434fa0d6cfef974cbf2ed634ebc2369c85316c3a3aee04e",
            "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
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-27T23:32:46Z",
            "content": "{\"cpv\": \"33140000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/742542-2026\", \"buyer\": \"Wojewódzki Szpital Zespolony im. Romana Ostrzyckiego w Koninie\", \"title\": \"Polska – Materiały medyczne – WSZ-EP-40/2026 „Dostawa wyrobów medycznych dla potrzeb Radiologii Zabiegowej oraz zabiegów endowaskularnych w chorobach naczyń mózgowych”\", \"region\": \"wielkopolskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL414, POL, PL414, PL414, POL, POL\", \"buyer_nip\": \"6651042675\", \"source_id\": \"742542-2026\", \"deadline_at\": \"2026-11-30T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-27T01:00:00Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1396362\"}",
            "content_hash": "cbc8ec77dc1d8dd31813c158aa60bd4aba097f83d918f512db17342707b16d77",
            "prev_hash": "fc7d20d5ef69a464e434fa0d6cfef974cbf2ed634ebc2369c85316c3a3aee04e",
            "hash": "3efe5116617bb087490b946f1b5e3dc5db19493948f0a514b2cd600faa1a1e39",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        }
    ]
}