Halving bitcoin will reduce the block reward from the current 6.25 BTC to 3. 125 BTC. The rule of halving bitcoin is written into the bitcoin mining algorithm. Bitcoin will be halved every 265,438+00,000 pieces (once every four years) until 265,438+040, when all 265,438+000 million BTCs will be mined. The halving of bitcoin has a great impact on the market. On the one hand, halving the supply speed of bitcoin reduces its scarcity and helps to maintain its value.