Perpetual futures on the Bitcoin Volmex Implied Volatility Index (BVIV) debuted on Hyperliquid on Monday, giving traders on the onchain exchange a way to bet on the degree, not direction, of bitcoin’s price swings. The BVIV Index, often described as a "bitcoin VIX," tracks cryptocurrency's expected 30-day implied or expected volatility in real time. The index is analogous to Cboe’s VIX index, which tracks the 30-day implied volatility in Wall Street’s benchmark equity index, S&P 500.