Halving in a Nutshell
Bitcoin's "Halving" is a hard rule written into the protocol: For every approximately 210,000 blocks mined (roughly every four years), the reward of new bitcoins miners receive per block is cut in half. This gradually slows the rate of new supply, ultimately approaching the total cap of 21 million coins.
History of Halvings
| Time | Block Reward Change |
|---|---|
| 2009 (Genesis) | 50 BTC / block |
| 2012 | 50 → 25 BTC |
| 2016 | 25 → 12.5 BTC |
| 2020 | 12.5 → 6.25 BTC |
| April 2024 | 6.25 → 3.125 BTC |
| Approx. 2028 (Estimated) | 3.125 → 1.5625 BTC |
Why Is the Halving So Closely Watched?
From a supply and demand perspective, when new supply decreases and demand remains constant, there is upward pressure on price. Historically, significant bull markets have emerged within 12–18 months after several halvings, making the market treat it as an important cyclical milestone. However, it's crucial to note: This is an empirical pattern, not a guarantee. This cycle also introduces new variables like spot ETF inflows and macroeconomic interest rates. To understand cycles further, read What Are Bull and Bear Markets.
Impact of the Halving on Miners
Halving the block reward means miners' income is directly cut in half. Miners with low efficiency or high electricity costs may be eliminated, and hashrate will undergo adjustments. This is why market volatility often accompanies halving events. Regular users who don't mine just need to be aware of this.
What Should Beginners Do?
- Treat the halving as background knowledge for understanding market cycles, not as a buy or sell signal.
- Instead of predicting price points, use dollar-cost averaging to lower your average cost and stop-losses to manage risk.
- If you want to participate, first understand how to buy Bitcoin, use only disposable income, and start small.