Riot Blockchain, Inc., together with its subsidiaries, focuses on cryptocurrency mining operation in North America. The company primarily focuses on bitcoin mining. As of December 31, 2020, it operated a fleet of 7,043 miners. The company was formerly known as Bioptix, Inc. and changed its name to Riot Blockchain, Inc. in October 2017. Riot Blockchain, Inc. was incorporated in 2000 and is based in Castle Rock, Colorado.