{
    "tender_id": 4253446,
    "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": "2026-10-30T23:52:16Z",
            "content": "{\"cpv\": \"79952000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/534441/organizacja-stoisk-narodowych-na-targach-zagranicznych-w-ramach-projektu-brand-hub-w-2027-2028\", \"buyer\": \"POLSKA AGENCJA ROZWOJU PRZEDSIĘBIORCZOŚCI\", \"title\": \"Organizacja stoisk narodowych na targach zagranicznych w ramach projektu Brand Hub w 2027-2028\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"534441\", \"deadline_at\": \"2026-11-25T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T06:21:00Z\"}",
            "content_hash": "4f0749942c82af3c39cbcf6a82eb2fe4ff9c667f6a1274f9811592dc914cd968",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2a33c63f0a2a53d1301c11be4411ef854d4be6a567d6f87359e51ca3367a6c58",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-31T00:45:16Z",
            "content": "{\"cpv\": \"79952000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/534441/organizacja-stoisk-narodowych-na-targach-zagranicznych-w-ramach-projektu-brand-hub-w-2027-2028\", \"buyer\": \"POLSKA AGENCJA ROZWOJU PRZEDSIĘBIORCZOŚCI\", \"title\": \"Organizacja stoisk narodowych na targach zagranicznych w ramach projektu Brand Hub w 2027-2028\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"534441\", \"deadline_at\": \"2026-11-25T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T06:21:00Z\", \"procedure_url\": \"https://parp.eb2b.com.pl/open-preview-auction.html/534441/organizacja-stoisk-narodowych-na-targach-zagranicznych-w-ramach-projektu-brand-hub-w-2027-2028\"}",
            "content_hash": "f94843b4da3b85a82932207f8d2cd257d434728289d83f7f4df8b29b9ae7abd0",
            "prev_hash": "2a33c63f0a2a53d1301c11be4411ef854d4be6a567d6f87359e51ca3367a6c58",
            "hash": "6bd260e254fe23282395648bd2a2b50e2cff258b6af938442879e286c2297d21",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-01T02:20:33Z",
            "content": "{\"cpv\": \"79950000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/534441/organizacja-stoisk-narodowych-na-targach-zagranicznych-w-ramach-projektu-brand-hub-w-2027-2028\", \"buyer\": \"POLSKA AGENCJA ROZWOJU PRZEDSIĘBIORCZOŚCI\", \"title\": \"Organizacja stoisk narodowych na targach zagranicznych w ramach projektu Brand Hub w 2027-2028\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"534441\", \"deadline_at\": \"2026-11-25T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T06:21:00Z\", \"procedure_url\": \"https://parp.eb2b.com.pl/open-preview-auction.html/534441/organizacja-stoisk-narodowych-na-targach-zagranicznych-w-ramach-projektu-brand-hub-w-2027-2028\"}",
            "content_hash": "089e3cee842c435b559aa582a3ed7c9c78cdd86303c7dbc420e904ff81731c0f",
            "prev_hash": "6bd260e254fe23282395648bd2a2b50e2cff258b6af938442879e286c2297d21",
            "hash": "19e29a10fd5970c09a07eacc7aa3a07ceace02dffaf7ef4287f7f6675e034b3f",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        }
    ]
}