Abstract: Circuit design equipment may design logic for a circuit. The design equipment may discover optimized design constraints and an optimized clock signal frequency for the circuit. The design equipment may output the discovered optimized clock signal frequency and design constraints to circuit fabrication equipment for fabricating the corresponding circuit. The design equipment may discover the optimized clock signal frequency and design constraints by populating a cost function with different clock signal frequencies and different design constraint values. The cost function may be, for example, a multi-dimensional surface. The design equipment may identify a global minimum of the cost function and may identify the clock signal frequency and design constraint values that correspond to the global minimum as the optimized clock frequency and optimized design constraints to provide to circuit fabrication equipment.

Abstract: Mining circuitry may be used to mine digital currency such as bitcoins by computing solutions to a cryptographic puzzle. Successful computation of a solution to the cryptographic puzzle may provide a reward of the digital currency. The mining circuitry may partition the mined reward between a first digital wallet and a second digital wallet. The first digital wallet may be user-provided, whereas the second digital wallet may be hardcoded into the dedicated mining circuitry. The mining circuitry may include control circuitry and multiple processing core circuits. The control circuitry may control the processing cores to solve the cryptographic puzzle via exhaustive search over possible inputs to the cryptographic puzzle.