{
    "tender_id": 1033168,
    "check": {
        "ok": true,
        "versions": 4,
        "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": "2026-10-24T13:58:39Z",
            "content": "{\"url\": \"https://mesko.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\", \"buyer\": \"MESKO SPÓŁKA AKCYJNA\", \"title\": \"Dostawa mieszalników - 3 sztuki / Delivery of mixing devices – 3 pcs.\", \"region\": \"swietokrzyskie\", \"source\": \"mesko_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŚWIĘTOKRZYSKIE\", \"source_id\": \"531080\", \"deadline_at\": \"2026-10-27T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T11:30:00Z\"}",
            "content_hash": "f75c4b4366c9191fa3c342dc8e12fc3b368b92c55683d0336bf466ec7737f26e",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "b3b480c81880521db5c610039032d38a983ed701dca6bb3f140e0c2f0dff5533",
            "actor": null,
            "seal": {
                "id": 1,
                "digest": "25686b149cfd327de10f8db2827c82e22b0d6a884d716cd11b36328364d6937d",
                "file": "https://tenderiq.pl/rejestr/pieczec-1.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-1.txt.ots",
                "bitcoin_block": 972985
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-25T23:35:57Z",
            "content": "{\"url\": \"https://mesko.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\", \"buyer\": \"MESKO SPÓŁKA AKCYJNA\", \"title\": \"Dostawa mieszalników - 3 sztuki / Delivery of mixing devices – 3 pcs.\", \"region\": \"swietokrzyskie\", \"source\": \"mesko_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŚWIĘTOKRZYSKIE\", \"source_id\": \"531080\", \"deadline_at\": \"2026-10-27T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T11:30:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\"}",
            "content_hash": "374e10708332bcd014cdc2f91ec9fe480f6285dcde2b83cd735166d932cc204e",
            "prev_hash": "b3b480c81880521db5c610039032d38a983ed701dca6bb3f140e0c2f0dff5533",
            "hash": "2ca105a9d1ca1cef42b273ead746ccc25b881ad7902584c957ae9ab461720ba9",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-26T15:40:36Z",
            "content": "{\"url\": \"https://mesko.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\", \"buyer\": \"MESKO SPÓŁKA AKCYJNA\", \"title\": \"Dostawa mieszalników - 3 sztuki / Delivery of mixing devices – 3 pcs.\", \"region\": \"swietokrzyskie\", \"source\": \"mesko_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŚWIĘTOKRZYSKIE\", \"source_id\": \"531080\", \"deadline_at\": \"2026-10-30T13:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T11:30:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\"}",
            "content_hash": "f742d9c6937d3efbcbe3bd9afb61c641dd381974c4e3608d8276f3b32b3748ac",
            "prev_hash": "2ca105a9d1ca1cef42b273ead746ccc25b881ad7902584c957ae9ab461720ba9",
            "hash": "2ab54e62207ea68133e05ece6a61c06ca84f2d1a2644250ac720c059c73d134e",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-27T11:33:58Z",
            "content": "{\"url\": \"https://mesko.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\", \"buyer\": \"MESKO SPÓŁKA AKCYJNA\", \"title\": \"Dostawa mieszalników - 3 sztuki / Delivery of mixing devices – 3 pcs.\", \"region\": \"swietokrzyskie\", \"source\": \"mesko_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"ŚWIĘTOKRZYSKIE\", \"source_id\": \"531080\", \"deadline_at\": \"2026-10-30T13:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T11:30:00Z\", \"procedure_url\": \"https://mesko.eb2b.com.pl/open-preview-auction.html/531080/dostawa-mieszalnikow-3-sztuki-delivery-of-mixing-devices-3-pcs\"}",
            "content_hash": "5ac3ffa99a463202a4971a3cc0e4deea3b804aa799ae419cd542eae54bb773a5",
            "prev_hash": "2ab54e62207ea68133e05ece6a61c06ca84f2d1a2644250ac720c059c73d134e",
            "hash": "64b488526000164415174781ad8f865a73d85d534e3473ac512f9434bf0fbb47",
            "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
            }
        }
    ]
}