What is a Bitcoin Halving? A Bitcoin halving is a programmed event written into Bitcoin's code that cuts the reward for mining new blocks in half. This essentially reduces the rate at which new Bitcoins enter circulation. These halvings occur roughly every four years, or after every 210,000 blocks are mined on the Bitcoin blockchain. Why Does Bitcoin Halving Matter? Bitcoin halving is significant for a few reasons: Reduced Supply: By cutting the mining reward in half, halvings significantly slo