{
    "tender_id": 3828102,
    "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": "2026-10-28T21:20:06Z",
            "content": "{\"cpv\": \"79111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1399640\", \"buyer\": \"Międzynarodowy Instytut Mechanizmów i Maszyn Molekularnych\", \"title\": \"145/10/2026 Ogłoszenie o udzielanym zamówieniu z dziedziny nauki 145/10/2026\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399640\", \"deadline_at\": \"2026-11-03T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T10:31:00Z\", \"notice_number\": \"1399640\"}",
            "content_hash": "0b3e700a1b75c47d833d2454f47b0ce22a37c0bb9ca6e74a816681356f0965af",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2a1d728bedbd93568bc36b414051e90ba548f056de6598672682ea1400c2d1d1",
            "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
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T21:45:31Z",
            "content": "{\"cpv\": \"79111000\", \"url\": \"https://platformazakupowa.pl/transakcja/1399640\", \"buyer\": \"Międzynarodowy Instytut Mechanizmów i Maszyn Molekularnych\", \"title\": \"145/10/2026 Ogłoszenie o udzielanym zamówieniu z dziedziny nauki 145/10/2026\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399640\", \"deadline_at\": \"2026-11-03T22:59:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T10:31:00Z\", \"notice_number\": \"1399640\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399118\"}",
            "content_hash": "0297b14354f5b48aa92f4ae22cc69530e82adc63d11bcf7182bac8626b7976c6",
            "prev_hash": "2a1d728bedbd93568bc36b414051e90ba548f056de6598672682ea1400c2d1d1",
            "hash": "75da07b774f95648667bd3069053348a6989cb01250ba17c675bbc6a87b5afbf",
            "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
            }
        }
    ]
}