What Is a ‘Halving Event’ in Bitcoin and Why Is It Significant?

A Halving Event is a pre-programmed reduction in the reward miners receive for validating a block. It occurs approximately every four years (or every 210,000 blocks).

Its significance is that it reduces the supply of new Bitcoin entering the market, creating scarcity. This scarcity is a core part of Bitcoin's monetary policy and is often associated with subsequent price appreciation.