What is the halving?
A Bitcoin halving cuts the reward miners receive for adding a block by 50%. It happens about every four years and gradually reduces the rate at which new bitcoin is created, until the 21-million cap is reached.
Roughly every 210,000 blocks (~4 years) Bitcoin's block reward halves. Here's the estimated countdown.
Estimate based on average block time; the exact date drifts with hashrate.
A Bitcoin halving cuts the reward miners receive for adding a block by 50%. It happens about every four years and gradually reduces the rate at which new bitcoin is created, until the 21-million cap is reached.