What is the Bitcoin halving and why does it matter?
Quick Answer
The Bitcoin halving is a programmatic event every ~4 years that cuts the new Bitcoin supply issued to miners by 50%. It enforces Bitcoin's fixed 21 million supply and has historically preceded major price increases.
TL;DR
Every 4 years, new BTC supply halves. April 2024 halving cut reward to 3.125 BTC/block. Historically bullish.
Key Takeaways
- 1Block reward halves every 210,000 blocks (~4 years)
- 2April 2024 halving cut reward from 6.25 to 3.125 BTC per block
- 3Only 21 million Bitcoin will ever exist — halving enforces this
- 4All 4 previous halvings preceded significant bull markets within 18 months
- 5Next halving expected 2028 — reward will drop to 1.5625 BTC
Full Explanation
The Bitcoin halving is one of the most anticipated events in cryptocurrency. Programmed by Satoshi Nakamoto into the Bitcoin protocol, it automatically reduces the block reward paid to miners by 50% every 210,000 blocks.
When Bitcoin launched in 2009, miners received 50 BTC per block. The halvings reduced this progressively: 25 BTC (2012), 12.5 BTC (2016), 6.25 BTC (2020), and most recently 3.125 BTC (April 2024).
The economic significance: each halving cuts the rate at which new Bitcoin enters circulation roughly in half. If demand stays constant or grows, reduced supply growth creates upward price pressure. Historically, all four previous halvings have been followed by significant bull market cycles — though with varying timelines and magnitudes.
The halving also enforces Bitcoin's ultimate scarcity. Of the 21 million Bitcoin that will ever exist, approximately 19.87 million have already been mined. After all halvings complete, the last Bitcoin will be mined around the year 2140.