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  "capture_capability": {
    "id": "binance_public_data_spot_ethusdt_1m_v1",
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    "market": "Spot",
    "symbol": "ETHUSDT",
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    "rules_source": "binance_public_spot"
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      "research_question": "For Binance Spot ETHUSDT one-minute bars in the fixed 2026-01-01T00:00:00Z through 2026-09-01T00:00:00Z interval, do positive one-minute log returns at least as large as the verified frozen Stage-A q99 have a positive event-weighted mean 30-minute forward log return whose one-sided 95% lower bound is positive?",
      "substitutions": [
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          "type": "SAMPLE_PERIOD_CHANGED",
          "detail": "The validation period is the fixed historical Binance Spot ETHUSDT one-minute interval [2026-01-01T00:00:00Z, 2026-09-01T00:00:00Z), rather than the source paper's sample period."
        },
        {
          "type": "SOURCE_DATASET_CHANGED",
          "detail": "The source paper uses Coinbase one-minute ETH data; Strategy Lab uses Binance Spot ETHUSDT one-minute data."
        },
        {
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        }
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