{
    "tender_id": 4019748,
    "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": "2026-10-29T19:33:25Z",
            "content": "{\"cpv\": \"24111500\", \"url\": \"https://platformazakupowa.pl/transakcja/1399410\", \"buyer\": \"Zachodnie Centrum Medyczne Sp. z o.o.\", \"title\": \"ZCM-ZP.270.38.2026.TP Sukcesywne dostawy gazów medycznych i technicznych wraz z wynajmem butli do Zachodniego Centrum Medycznego Sp. z o.o. w Krośnie Odrz.\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399410\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:33:26Z\", \"notice_number\": \"1399410\"}",
            "content_hash": "152a37d6ceb77f9e40abd9ba14ff08e4d645222ce5b343182fe2c74d0746dd5d",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "167b13b08ef74fb848796a6ebf25cf0b31096e5315ad06b94ebf178a4cdf1c35",
            "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": "2026-10-29T19:45:59Z",
            "content": "{\"cpv\": \"24111500\", \"url\": \"https://platformazakupowa.pl/transakcja/1399410\", \"buyer\": \"Zachodnie Centrum Medyczne Sp. z o.o.\", \"title\": \"ZCM-ZP.270.38.2026.TP Sukcesywne dostawy gazów medycznych i technicznych wraz z wynajmem butli do Zachodniego Centrum Medycznego Sp. z o.o. w Krośnie Odrz.\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399410\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T19:33:26Z\", \"notice_number\": \"1399410\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399410\"}",
            "content_hash": "1a483b0b3d8a36fa790151eb274501e00a6ca8605f129785dfe4120851a15b42",
            "prev_hash": "167b13b08ef74fb848796a6ebf25cf0b31096e5315ad06b94ebf178a4cdf1c35",
            "hash": "84659703b0584d41d04c8531989c47fc208bd3f50e2b11162372c65dc2b7a7e0",
            "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": "2026-10-29T23:32:15Z",
            "content": "{\"cpv\": \"24111500\", \"url\": \"https://platformazakupowa.pl/transakcja/1399410\", \"buyer\": \"Zachodnie Centrum Medyczne Sp. z o.o.\", \"title\": \"ZCM-ZP.270.38.2026.TP Sukcesywne dostawy gazów medycznych i technicznych wraz z wynajmem butli do Zachodniego Centrum Medycznego Sp. z o.o. w Krośnie Odrz.\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [\"24111900\", \"24112100\", \"24112200\"], \"location\": \"Polska\", \"source_id\": \"1399410\", \"deadline_at\": \"2026-11-06T08:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T23:00:00Z\", \"notice_number\": \"1399410\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399410\"}",
            "content_hash": "f84c95a96996bc21e45991d4cc9774bbdce0bbdd5187291133341972d16af349",
            "prev_hash": "84659703b0584d41d04c8531989c47fc208bd3f50e2b11162372c65dc2b7a7e0",
            "hash": "5b40cc916d1f9909e2cddbe5863e3b41f119c68238025f5fac91e966a6955c45",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        }
    ]
}