On October 12, the BitVol (Bitcoin volatility) index launched by financial index company T3 Index and options trading platform LedgerX rose to 56.16 yesterday, a single-day increase of 1.79%. BlockBeats Note: The BitVol index measures the 30-day expected implied volatility derived from the price of tradable Bitcoin options. Implied volatility refers to the volatility implied by the actual option price. It is the volatility inferred by substituting the actual option price and other parameters except volatility σ into the B-S option pricing formula. The actual price of an option is formed by the competition of many option traders. Therefore, the implied volatility represents the market participants' views and expectations on the future of the market, and is therefore regarded as the closest to the actual volatility at the time.