Riot Platforms, Inc., together with its subsidiaries, operates as a bitcoin mining company in North America. The company operates through three segments: Bitcoin Mining, Data Center Hosting, and Engineering. It also provides co-location services for institutional-scale bitcoin mining companies; critical infrastructure and workforce for institutional-scale miners to deploy and operate their miners; operation of data centers; and maintenance/management of computing capacity. In addition, the company engages in the design and manufacturing of power distribution equipment and custom engineered electrical products; and electricity distribution product design, manufacture, and installation services primarily focused on large-scale commercial, and governmental customers, as well as a range of markets, including data center, power generation, utility, water, industrial, and alternative energy. The company was formerly known as Riot Blockchain, Inc. Riot Platforms, Inc. was incorporated in 1998 and is based in Castle Rock, Colorado.

CleanSpark, Inc. operates as a bitcoin miner in the Americas. It owns and operates data centers that primarily run on low-carbon power. Its infrastructure supports Bitcoin, a digital commodity and a tool for financial independence and inclusion. The company was formerly known as Stratean Inc. and changed its name to CleanSpark, Inc. in November 2016. CleanSpark, Inc. was incorporated in 1987 and is headquartered in Henderson, Nevada.

Bitfarms Ltd. engages in the mining of cryptocurrency coins and tokens in Canada, the United States, Paraguay, and Argentina. It owns and operates server farms that primarily validates transactions on the Bitcoin Blockchain and earning cryptocurrency from block rewards and transaction fees. The company also provides electrician services to commercial and residential customers in Quebec, Canada. It also undertakes hosting of third-party mining hardware. The company was formerly known as Bitfarms Technologies Ltd and changed its name to Bitfarms Ltd. in October 2018. The company was founded in 2017 and is based in Toronto, Canada.

Bit Digital, Inc., together with its subsidiaries, engages in the bitcoin mining business. It is also involved in the treasury management activities; and digital asset staking and digital asset mining businesses, as well as ethereum staking activities. In addition, it provides specialized cloud-infrastructure services for artificial intelligence applications. The company was formerly known as Golden Bull Limited and changed its name to Bit Digital, Inc. in September 2020. Bit Digital, Inc. was founded in 2015 and is headquartered in New York, New York.

The9 Limited operates as a cryptocurrency mining business in China, Eastern Europe, Asia, and North America. The company was formerly known as GameNow.net Limited and changed its name to The9 Limited in February 2004. The9 Limited was incorporated in 1999 and is headquartered in Shanghai, the People's Republic of China.

Griid Infrastructure Inc. operates as a vertically integrated bitcoin mining company in North America. The company owns and operates a portfolio of energy infrastructure and data centers. It also engages in bitcoin mining operation, which operates specialized computers that generate cryptocurrency. The company was founded in 2018 and is based in Cincinnati, Ohio. As of October 30, 2024, Griid Infrastructure Inc. operates as a subsidiary of CleanSpark, Inc.

BTC Digital Ltd. a crypto asset technology company engages in bitcoin mining business. It is also involved in mining machines resale and rental business. The company was formerly known as Meten Holding Group Ltd. and changed its name to BTC Digital Ltd. in August 2023. The company was founded in 2006 and is headquartered in Shenzhen, China.

Bit Origin Ltd, through its subsidiaries, engages in the cryptocurrency mining business in the United States. It is also involved in deploying blockchain technologies. The company was formerly known as China Xiangtai Food Co., Ltd. and changed its name to Bit Origin Ltd in April 2022. Bit Origin Ltd was incorporated in 2018 and is based in Singapore, Singapore.