What is Bitcoin Halving
Bitcoin was designed with a hard cap of 21 million BTC — no one can create more, unlike fiat currencies that central banks can print indefinitely. Halving is the mechanism that reduces miner rewards by half every 210,000 blocks (approximately every 4 years), systematically decreasing new Bitcoin supply until it effectively stops around 2140.
Satoshi Nakamoto embedded this in the original 2009 whitepaper to create algorithmic scarcity and prevent uncontrollable inflation — the core flaw of unlimited money printing.
Bitcoin Halving History
Halving #1 — November 28, 2012
Reward dropped from 50 BTC to 25 BTC. Bitcoin price was ~$12 pre-halving. After steady growth, it reached $1,100 in December 2013 — a 9,000%+ gain.
Bitcoin mining rig ขนาดใหญ่
Halving #2 — July 9, 2016
Reward dropped from 25 BTC to 12.5 BTC. Price was ~$650 pre-halving. Rose to nearly $20,000 by December 2017 — a 3,000%+ gain.
Halving #3 — May 11, 2020
Reward dropped from 12.5 BTC to 6.25 BTC. Price was ~$8,500 pre-halving. Climbed to an all-time high of $69,000 in November 2021 — an 8x gain.
Halving #4 — April 20, 2024
Reward dropped from 6.25 BTC to 3.125 BTC. Price was ~$63,000 pre-halving. Reached $73,000 in March 2025 before consolidating around $60,000-$65,000.
Bitcoin halving event ทุก 4 ปี
Why Halving Affects Price
Supply Shock
When rewards halve, new Bitcoin entering the market daily drops significantly. Before the 4th halving, approximately 900 BTC entered daily. After halving, only 450 BTC. Meanwhile, institutional demand from ETFs and corporate treasuries continues growing — creating persistent supply-demand imbalance.
Cost of Production
With halved rewards, higher-cost miners may be forced to sell Bitcoin to cover electricity expenses. This eventually reduces sell pressure as less efficient miners exit. Remaining miners tend to have lower production costs and better efficiency.
Historical Pattern
Many investors buy Bitcoin before halving believing patterns will repeat. This creates a self-fulfilling prophecy: more buyers → higher prices → more buyers believe halving effect is real → even more buyers.
Satoshi Nakamoto และ Bitcoin whitepaper
How Halving 2024 Differs from Previous Cycles
The 4th halving introduced unprecedented factors:
- US-approved Bitcoin ETFs — Nine spot ETFs approved in January 2024 enabled institutional investors to buy Bitcoin easily without holding keys. ETF inflows exceeded $12 billion in the initial months.
- Halving occurred after bull run started — Previous cycles typically saw pre-halving dips. This time, prices rose significantly before halving.
- Miner preparedness — Major miners maintain reserves and operate next-gen hardware like the Antminer S21 Pro with superior efficiency, lowering cost of production.
Short-Term vs Long-Term Price Impact
Short-Term (1-6 months post-halving)
Historically, prices have risen substantially within 6 months of halving. However, short-term volatility is extreme and there's no guarantee of repeating patterns. Prices sometimes dip before rising, or rise then crash sharply.
Long-Term (1-4 years)
Halving's long-term effects are clearer. As new supply approaches zero and demand from spending, saving, and institutional adoption grows, equilibrium shifts toward higher prices.
กราฟราคา Bitcoin หลัง halving
Risks to Consider
- Over-leveraging — Leveraged traders risk liquidation during volatile swings.
- Regulatory risk — Sudden policy changes globally can impact prices dramatically.
- Macro factors — Interest rates, global economic conditions, and US monetary policy sometimes outweigh halving effects.
- Over-investment risk — Bitcoin remains high-risk; only invest what you can afford to lose entirely.
Recommendations for Investors
- Study before investing — understand what Bitcoin is, who sets prices, and why it has value.
- Use Dollar Cost Averaging (DCA) — buy small amounts consistently instead of trying to time the market.
- Store Bitcoin in a wallet you control — never leave holdings on exchanges.
- Never invest money you'll need short-term — Bitcoin's volatility can result in 50-80% drawdowns during bear markets.
Frequently Asked Questions
When is the next Bitcoin halving?
Approximately 2028, at block 1,050,000. The reward will decrease from 3.125 BTC to 1.5625 BTC.
When will all Bitcoin be mined?
Approximately 2140. After that, miners earn exclusively from transaction fees.
Does halving affect price immediately?
Not necessarily. Price movements depend on market sentiment and external factors more than halving itself. The belief that halving drives prices up influences investor decisions.
Should I buy Bitcoin before or after halving?
No one can predict accurately. Many buy before halving anticipating appreciation. Others wait post-halving to observe actual price action.
How will miners be affected?
Miners with low electricity costs survive best. After halving, some may need to sell mined Bitcoin immediately for operational expenses, temporarily increasing sell pressure.
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