Bit Digital announced its complete exit from the Bitcoin mining business and shifted to Ethereum and AI infrastructure and reserve operations. CEO Sam Tabar said in a shareholder letter on January 29 that mining capital efficiency has decreased, focusing on operability, monetization and complex infrastructure; The company entered mining in 2020 and launched Bit Digital AI in 2023 to diversify HPC. Subsidiary WhiteFiber raised about $160 million in its IPO in August, and Bit Digital held 27 million shares; held 153,500 ETH (worth $428.8 million, mostly pledged) in July; In October, an additional 310.57 million ETH (from $135 million in convertible bonds) was purchased. (The Block)