Halving comes from an Old English word meaning “half”. In cryptocurrencies, mining is a computer process of recording and verifying information on the digital record known as the blockchain. In bitcoin and other currencies, mining also requires computers compete with each other to solve a complicated math problem. Once solved, a new block is discovered that can be added to the chain of blocks and a reward of brand new bitcoin is given to the computer that solved the math problem first. Halving is the reduction of the bitcoin mining reward issued by half.