The Intel Blockscale ASIC is a custom application-specific integrated circuit (ASIC) designed for cryptocurrency mining and blockchain proof-of-work applications. It provides up to 580 gigahashes per second of hashing power while consuming between 4.8 and 22.7 watts of power, resulting in an efficiency of up to 26 joules per terahash. The ASIC features on-chip temperature and voltage sensors and supports a range of operating frequencies and up to 256 chips per chain. It is supported by reference hardware and software to simplify system development for customized and energy-efficient cryptocurrency mining solutions.