{
  "x402Version": 2,
  "id": 392,
  "slug": "392",
  "resource": "https://kronossignals.com/api/v1/volatility/btc",
  "description": "Realized volatility for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT): 7-day, 30-day, and 90-day annualized realized vol using three estimators (close-to-close, Parkinson, Garman-Klass) from Binance daily OHLC closed candles only. Essential for risk management, position sizing, and options pricing. Pay-per-call via x402.",
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      "payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
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            "as_of": "2026-01-01T00:00:00.000Z",
            "asset": "BTC-USD",
            "disclaimer": "Realized volatility from Binance daily OHLC. Historical; not a forecast. Not financial advice.",
            "note": "All estimates are annualized realized volatility using closed daily candles. Annualized by sqrt(252) trading-day convention.",
            "percentile_context": [
              {
                "current_vol": 0.48,
                "estimator": "parkinson",
                "is_window_high": false,
                "is_window_low": false,
                "max": 1.05,
                "min": 0.22,
                "percentile": 0.72,
                "sample_count": 87,
                "vol_window": "7d"
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              {
                "current_vol": 0.58,
                "estimator": "parkinson",
                "is_window_high": true,
                "is_window_low": false,
                "max": 0.98,
                "min": 0.28,
                "percentile": 0.81,
                "sample_count": 87,
                "vol_window": "30d"
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            "source": "Binance daily klines (closed candles only)",
            "symbol": "BTCUSDT",
            "term_structure": [
              {
                "best_estimator": "parkinson",
                "close_to_close": 0.54,
                "garman_klass": 0.51,
                "n_candles": 7,
                "note": "annualized realized volatility",
                "parkinson": 0.48,
                "percentile": 0.72,
                "vol_regime": "elevated",
                "window": "7d"
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                "best_estimator": "garman_klass",
                "close_to_close": 0.62,
                "garman_klass": 0.61,
                "n_candles": 30,
                "note": "annualized realized volatility",
                "parkinson": 0.58,
                "percentile": 0.81,
                "vol_regime": "elevated",
                "window": "30d"
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            "vol_30d_annualized": 0.62,
            "vol_7d_annualized": 0.54
          },
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  "tags": [
    "bazaar"
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  "sourceHost": "kronossignals.com",
  "lastUpdated": "2026-09-08T23:08:37.407Z",
  "quality": {
    "calls30d": 8,
    "uniquePayers30d": 8,
    "lastCalledAt": "2026-09-08T23:08:37.197Z"
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  "featured": false,
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    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}