{
  "asset": "ETH-USDT",
  "timeframe": "15m",
  "generated_at_ms": 1700000000000,
  "expected_venues": [
    "binance",
    "okx",
    "bybit"
  ],
  "bars_by_market_type": {
    "spot_usdt": [
      {
        "asset": "ETH-USDT",
        "timeframe": "15m",
        "market_type": "spot_usdt",
        "timestamp_ms": 1699997300000,
        "open": 49.2,
        "high": 49.9,
        "low": 49.0,
        "close": 49.6,
        "median_close": 49.6,
        "vwap_close": 49.6,
        "volume_base_total": 52.0,
        "volume_quote_total": 2579.2,
        "venue_count": 3,
        "venue_weights": {
          "binance": 0.34,
          "okx": 0.33,
          "bybit": 0.33
        },
        "coverage": 1,
        "price_dispersion_pct": 0.09,
        "data_quality": 0.87
      },
      {
        "asset": "ETH-USDT",
        "timeframe": "15m",
        "market_type": "spot_usdt",
        "timestamp_ms": 1699998200000,
        "open": 49.6,
        "high": 50.2,
        "low": 49.4,
        "close": 49.9,
        "median_close": 49.9,
        "vwap_close": 49.9,
        "volume_base_total": 55.0,
        "volume_quote_total": 2744.5,
        "venue_count": 3,
        "venue_weights": {
          "binance": 0.34,
          "okx": 0.33,
          "bybit": 0.33
        },
        "coverage": 1,
        "price_dispersion_pct": 0.08,
        "data_quality": 0.88
      },
      {
        "asset": "ETH-USDT",
        "timeframe": "15m",
        "market_type": "spot_usdt",
        "timestamp_ms": 1699999100000,
        "open": 49.9,
        "high": 50.6,
        "low": 49.7,
        "close": 50.2,
        "median_close": 50.2,
        "vwap_close": 50.2,
        "volume_base_total": 58.0,
        "volume_quote_total": 2911.6,
        "venue_count": 3,
        "venue_weights": {
          "binance": 0.34,
          "okx": 0.33,
          "bybit": 0.33
        },
        "coverage": 1,
        "price_dispersion_pct": 0.07,
        "data_quality": 0.89
      },
      {
        "asset": "ETH-USDT",
        "timeframe": "15m",
        "market_type": "spot_usdt",
        "timestamp_ms": 1700000000000,
        "open": 50.0,
        "high": 51.0,
        "low": 49.0,
        "close": 50.5,
        "median_close": 50.5,
        "vwap_close": 50.5,
        "volume_base_total": 60.0,
        "volume_quote_total": 3030.0,
        "venue_count": 3,
        "venue_weights": {
          "binance": 0.34,
          "okx": 0.33,
          "bybit": 0.33
        },
        "coverage": 1,
        "price_dispersion_pct": 0.06,
        "data_quality": 0.9
      }
    ]
  },
  "latest_by_market_type": {
    "spot_usdt": {
      "asset": "ETH-USDT",
      "timeframe": "15m",
      "market_type": "spot_usdt",
      "timestamp_ms": 1700000000000,
      "open": 50.0,
      "high": 51.0,
      "low": 49.0,
      "close": 50.5,
      "median_close": 50.5,
      "vwap_close": 50.5,
      "volume_base_total": 60.0,
      "volume_quote_total": 3030.0,
      "venue_count": 3,
      "venue_weights": {
        "binance": 0.34,
        "okx": 0.33,
        "bybit": 0.33
      },
      "coverage": 1,
      "price_dispersion_pct": 0.06,
      "data_quality": 0.9
    }
  },
  "status_by_market_type": {
    "spot_usdt": "COMPOSITE_DATA_OK"
  },
  "coverage_by_market_type": {
    "spot_usdt": 1
  },
  "notes": [
    "Illustrative synthetic sample; not live market data.",
    "Synthetic 15m fixture for dashboard multi-timeframe onboarding."
  ]
}