{
  "sample_pack": "china-trade-csv-qa-sample",
  "generated_at": "2026-07-01",
  "scope_note": "Public CSV sample for delivery format and QA structure. The rows use official monthly China total trade values. Custom HS6 or HS8 extracts are confirmed before quote.",
  "source": {
    "name": "General Administration of Customs of China",
    "short_name": "GACC",
    "url": "http://english.customs.gov.cn/statics/report/monthly.html",
    "retrieved_at": "2026-06-15"
  },
  "coverage": {
    "start_period": "2026-01",
    "end_period": "2026-05",
    "latest_period": "2026-05",
    "expected_periods": 5,
    "observed_periods": 5,
    "missing_periods": 0
  },
  "files": [
    {
      "path": "sample-trade-deliverable.csv",
      "rows": 10,
      "sha256": "b05892b34cbe4a0205daaa28b81689d1cd237fa013631e1bb7d359d5020ea20d"
    },
    {
      "path": "sample-data-dictionary.csv",
      "rows": 14,
      "sha256": "d4c85ddf8932b6d749ed6948ed86faa2d8c20801a9467c68628381eda7841beb"
    },
    {
      "path": "sample-coverage-report.csv",
      "rows": 2,
      "sha256": "60ee54532adc3531fe197b954c7de1c12ac6dd1636f75156c97a14dd69a47b29"
    }
  ],
  "checks": [
    {
      "id": "required_columns",
      "status": "pass",
      "detail": "All delivery columns are present and covered by the data dictionary."
    },
    {
      "id": "unit_semantics",
      "status": "pass",
      "detail": "Value unit is explicitly USD million and is not mixed with index or rate fields."
    },
    {
      "id": "latest_period",
      "status": "pass",
      "detail": "Latest period is recorded as 2026-05 in the coverage report and QA report."
    },
    {
      "id": "negative_values",
      "status": "pass",
      "detail": "Trade value fields contain no negative amounts."
    },
    {
      "id": "missing_values",
      "status": "pass",
      "detail": "Blank quantity fields are allowed because quantity is outside this sample scope. Blank is not rewritten as placeholder text."
    },
    {
      "id": "duplicate_keys",
      "status": "pass",
      "detail": "No duplicate period plus flow plus HS code plus partner keys were found."
    },
    {
      "id": "source_context",
      "status": "pass",
      "detail": "Each row carries source name URL source period and retrieval date."
    }
  ]
}