Cameron and Tyler Winklevoss, thought to be among the largest holders of bitcoin, said the advent of futures is just the beginning of a phase of greater acceptance for the cryptocurrency that is often derided as a bubble.

“We think it’s the starting gun to a whole new phase of liquidity and price discovery and sophisticated entrance to the market,” Tyler Winklevoss said during a Bloomberg Television interview.

The Winklevoss twins are co-founders of the Gemini exchange, which Cboe Global Markets Inc. is using as the basis for the daily settlement for the bitcoin futures that began trading Sunday, Dec....