{
    "tender_id": 4128633,
    "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": "2026-10-30T11:54:18Z",
            "content": "{\"cpv\": \"34927100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3674-b1bd-acdf-e2d6-6b000120b3bc\", \"buyer\": \"Powiat Olkuski\", \"title\": \"Zakup wraz z dostawą soli drogowej niezbrylającej luzem do zimowego utrzymania dróg powiatowych na terenie powiatu olkuskiego w 2027 roku.\", \"region\": \"malopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Olkusz, małopolskie\", \"buyer_nip\": \"6372024678\", \"source_id\": \"2026/BZP 00512894/01\", \"deadline_at\": \"2026-11-10T09:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:58:14Z\", \"notice_number\": \"2026/BZP 00512894/01\"}",
            "content_hash": "b808f6175bced08d7f4e2f033abc7a5ac9598f64fe2b9c240e8c2dbab1157655",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "970b0ae87eff5ef743527afde5501ac0e59797e86e62202dc9339c369738ee77",
            "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
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T13:45:38Z",
            "content": "{\"cpv\": \"34927100\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3674-b1bd-acdf-e2d6-6b000120b3bc\", \"buyer\": \"Powiat Olkuski\", \"title\": \"Zakup wraz z dostawą soli drogowej niezbrylającej luzem do zimowego utrzymania dróg powiatowych na terenie powiatu olkuskiego w 2027 roku.\", \"region\": \"malopolskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Olkusz, małopolskie\", \"buyer_nip\": \"6372024678\", \"source_id\": \"2026/BZP 00512894/01\", \"deadline_at\": \"2026-11-10T09:30:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T10:58:14Z\", \"notice_number\": \"2026/BZP 00512894/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1394690\"}",
            "content_hash": "d1c202d2b42e96e102976355fe0f5c6676b5c788d443e508e8d4308a974817c9",
            "prev_hash": "970b0ae87eff5ef743527afde5501ac0e59797e86e62202dc9339c369738ee77",
            "hash": "4258ed8052cba4e99ddc786ad75909d2552970e660c3c94f358d17d8f7348476",
            "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
            }
        }
    ]
}