Derivatives exchange Cboe plans to introduce continuous Bitcoin and Ethereum futures for U.S. customers in November, pending regulatory approval, it announced on Tuesday. Futures typically expire every month but Cboe said these contracts will last 10 years to give investors "continuous long-term market" access to the two biggest digital coins by market cap.  "Perpetual-style futures have gained strong adoption in offshore markets," Catherine Clay, Global Head of Derivatives at Cboe, said in a statement.  Fu ...