{
    "tender_id": 5409096,
    "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": "2026-11-05T12:21:59Z",
            "content": "{\"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3875631/plan-postepowan-na-2026r-aktualizacja-4\", \"buyer\": \"Państwowe Muzeum Auschwitz-Birkenau w Oświęcimiu\", \"title\": \"Plan postępowań na 2026r. - aktualizacja 4\", \"region\": \"malopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3875631\", \"deadline_at\": \"2026-11-11T11:51:03Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-05T12:22:00Z\"}",
            "content_hash": "24e89eef80e0cf55fad247e770556bde6932895cf6111ab7e276e1cc825dac0a",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "811d4d5c6322930c26cbf5017c048e6d5fef5893ada102db9df9198f10bdedb2",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-07T10:05:27Z",
            "content": "{\"cpv\": \"48900000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3875631/plan-postepowan-na-2026r-aktualizacja-4\", \"buyer\": \"Państwowe Muzeum Auschwitz-Birkenau w Oświęcimiu\", \"title\": \"Plan postępowań na 2026r. - aktualizacja 4\", \"region\": \"malopolskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3875631\", \"deadline_at\": \"2026-11-11T11:51:03Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-11-05T12:22:00Z\"}",
            "content_hash": "9f2c5f1decff48d68a2e2edda04c93dbe060dc073bd560a87e23ffbaf72c528f",
            "prev_hash": "811d4d5c6322930c26cbf5017c048e6d5fef5893ada102db9df9198f10bdedb2",
            "hash": "164b3856c00d9d5ba7eaec3c4a2e2581a316f87c97cba943ad1f87d880bc22a0",
            "actor": null,
            "seal": {
                "id": 15,
                "digest": "f6c36eda82d4dc4a4cabf73097f0dd62e17d55fa4f2594c5f095c0de4855ff5a",
                "file": "https://tenderiq.pl/rejestr/pieczec-15.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-15.txt.ots",
                "bitcoin_block": 975002
            }
        }
    ]
}