Bitcoin mining company Sphere 3D ( NASDAQ: ANY ) said on Tuesday that it mined 77.7 bitcoins in May, up 118% from April and 518% Y/Y. The company said its month-end operating hash rate increased to 1.0 EH/s. Mining revenue stood at $2.1M in May. The operations achieved 92.1 BTC/EH efficiency, and uptime was 89%. Source: Press Release