Bit Digital (NASDAQ: BTBT) has announced its decision to exit Bitcoin mining, shifting its focus to Ethereum infrastructure, staking, and high-performance computing (HPC) and AI strategies. CEO Sam Tabar explained that the evolving market has made Bitcoin mining less capital-efficient, prompting the company to concentrate its digital asset exposure on Ethereum. The company, which began Bitcoin mining in 2020, has been transitioning towards Ethereum since 2022, following Ethereum's shift to Proof-of-Stake. By mid-2025, Bit Digital had redefined itself as a "pure Ethereum vault and staking" entity, selling off mining hardware and terminating hosting contracts. Additionally, its AI subsidiary, WhiteFiber, completed an IPO last year, with Bit Digital holding approximately 27 million shares.