{
  "market": "btc-updown-5m-1791471600",
  "utc_window_start": "2026-10-08T15:00:00Z",
  "utc_window_end": "2026-10-08T15:05:00Z",
  "source_archives": [
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  "scope": "该市场在所提供 UTC 日包中保存的观测，包含开盘前记录；没有补齐缺口。",
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}