{
    "tender_id": 5003347,
    "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": "2026-11-03T14:42:27Z",
            "content": "{\"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536609/klimatyzator-kabiny-maszynisty-h0103433-do-poj-48we-48web-48wed-2\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"Klimatyzator kabiny maszynisty H0103433 do poj. 48WE / 48WEb / 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"WIELKOPOLSKIE\", \"source_id\": \"536609\", \"deadline_at\": \"2026-11-10T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:00:00Z\"}",
            "content_hash": "0f494db01d415104b53cf7f5efa40a5cacaae4d2ddc2aabdb43a71fbaebd16da",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "da8e8b723f0ef4f6f407ff554fde2d2ec1282d0855ce3b3604287047a397cf03",
            "actor": null,
            "seal": {
                "id": 11,
                "digest": "e9a17a70070a65f95be452321715a138cbb650567f41e2bae0faa2ffd562bbbd",
                "file": "https://tenderiq.pl/rejestr/pieczec-11.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-11.txt.ots",
                "bitcoin_block": 974456
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-04T00:36:43Z",
            "content": "{\"cpv\": \"34631000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536609/klimatyzator-kabiny-maszynisty-h0103433-do-poj-48we-48web-48wed-2\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"Klimatyzator kabiny maszynisty H0103433 do poj. 48WE / 48WEb / 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"WIELKOPOLSKIE\", \"source_id\": \"536609\", \"deadline_at\": \"2026-11-10T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:00:00Z\"}",
            "content_hash": "314a9bcc66ae8d244094d468da5443913fb3973ef5c1434ea187a287250a5193",
            "prev_hash": "da8e8b723f0ef4f6f407ff554fde2d2ec1282d0855ce3b3604287047a397cf03",
            "hash": "14faa99b9b7fae2f82023f86df1ab40a39b8e3a52151fd978456f97f36ed15a8",
            "actor": null,
            "seal": null
        },
        {
            "version": 3,
            "recorded_at": "2026-11-04T10:46:27Z",
            "content": "{\"cpv\": \"34631000\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536609/klimatyzator-kabiny-maszynisty-h0103433-do-poj-48we-48web-48wed-2\", \"buyer\": \"KOLEJE WIELKOPOLSKIE SP. Z O.O.\", \"title\": \"Klimatyzator kabiny maszynisty H0103433 do poj. 48WE / 48WEb / 48WEd\", \"region\": \"wielkopolskie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"WIELKOPOLSKIE\", \"source_id\": \"536609\", \"deadline_at\": \"2026-11-10T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-03T11:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536609/klimatyzator-kabiny-maszynisty-h0103433-do-poj-48we-48web-48wed-2\"}",
            "content_hash": "8ee8873217ff97cdf6a425feb797ba39995ab2ddc2e9c805eaf97800b15006ff",
            "prev_hash": "14faa99b9b7fae2f82023f86df1ab40a39b8e3a52151fd978456f97f36ed15a8",
            "hash": "e68b0a3027e584b72de0afe598240c1a43f5d6c7b086057cfd985196f1f3b70e",
            "actor": null,
            "seal": null
        }
    ]
}