{
  "pair": "USD/JPY",
  "reference_date": "2026-10-26",
  "time": "17:00 JST",
  "bid": 157.12,
  "ask": 157.14,
  "midpoint_editorial": 157.13,
  "method": "公表レンジの中間値で全外貨金額を換算。日銀の中心相場157.20とは別。",
  "evidence": [
    {
      "source_id": "boj-fx-20261026",
      "pdf_page": 1
    }
  ]
}