Everything About the Bitcoin Halving

2012, 2016, 2020, 2024. Something happened in the Bitcoin market in each of these years. Every time, the new supply was cut exactly in half, and over the following 12–18 months, the price set a new all-time high. Coincidence? No. This is the result of the Halving mechanism that Satoshi Nakamoto inscribed into Bitcoin’s code in 2009. No government, no central bank, and not even Bitcoin’s developers can arbitrarily alter this schedule. In this article, we examine what the halving is, why it matters, and what impact it has had historically — with concrete figures.

What Is the Halving: Scarcity Written in Code

The Bitcoin network generates a new block approximately every 10 minutes. The miner who creates this block receives a block reward in exchange for verifying transactions and recording them on the blockchain. The halving is the event in which this block reward is cut exactly in half every 210,000 blocks. In terms of time, 210,000 blocks translates to roughly four years.

When Bitcoin first launched in 2009, the block reward was 50 BTC. After the first halving it became 25 BTC, then 12.5 BTC, then 6.25 BTC. Following the fourth halving in April 2024, the current block reward is 3.125 BTC. This process repeats approximately 33 times and continues until the last bitcoin is mined around the year 2140. The final total supply is fixed at exactly 21 million.

This mechanism cannot be changed. While modifying the code is technically possible, it would require the agreement of a majority of the tens of thousands of node operators worldwide. Who would agree to a change that dilutes the value of the Bitcoin they hold? In practice, the halving is a monetary policy that is unalterable, protected by mathematics and incentives.

Four Halvings: Historical Patterns Through Data

Bitcoin has experienced four halvings so far. A distinct pattern has emerged with each cycle.

First Halving (November 28, 2012, Block Height 210,000)

• Block reward: 50 BTC → 25 BTC
• Price at halving: approximately $12
• Peak price 18 months later: approximately $1,100 (November 2013)
• Increase: approximately 9,000%

At the time, Bitcoin was virtually unknown. Its market cap was only $150 million, and there were only a handful of exchanges. But after the halving, the supply shock combined with interest from early adopters produced an explosive rally.

Second Halving (July 9, 2016, Block Height 420,000)

• Block reward: 25 BTC → 12.5 BTC
• Price at halving: approximately $650
• Peak price 18 months later: approximately $19,700 (December 2017)
• Increase: approximately 3,000%

This period coincided with the ICO (Initial Coin Offering) craze, when cryptocurrency became known to the general public. Interest in blockchain technology exploded, and institutional investors began seriously examining Bitcoin for the first time.

Third Halving (May 11, 2020, Block Height 630,000)

• Block reward: 12.5 BTC → 6.25 BTC
• Price at halving: approximately $8,700
• Peak price 18 months later: approximately $69,000 (November 2021)
• Increase: approximately 690%

During the COVID-19 pandemic, central banks around the world began unlimited monetary expansion. In this context, Bitcoin’s value proposition — supply mathematically limited — became all the more compelling. Companies like Tesla and MicroStrategy began holding Bitcoin as a treasury asset.

Fourth Halving (April 2024, Block Height 840,000)

• Block reward: 6.25 BTC → 3.125 BTC
• Price at halving: approximately $64,000
• Cycle outcome: in progress

Following the fourth halving in April 2024, the market has shown a trajectory similar to past patterns, though there is no guarantee that past patterns will necessarily repeat.

The pattern is clear. The percentage gain diminishes each time (9,000% → 3,000% → 690%), but the absolute price increase grows larger. The $1,088 increase in the first cycle is dwarfed by the $60,300 increase in the third cycle. This is a natural phenomenon as the market matures in scale.

The Economic Principles Behind the Halving’s Price Impact

The halving’s price impact is explained by basic supply-and-demand dynamics. Let’s look at concrete figures.

Before the third halving, miners produced approximately 900 BTC per day (12.5 BTC × roughly 144 blocks per day). After the halving, this figure dropped to approximately 450 BTC. Annualized, that is a supply reduction of about 164,000 BTC. Assuming a Bitcoin price of $30,000, that represents approximately $4.9 billion in selling pressure that has disappeared.

Miners are a major selling force in the Bitcoin market. They must regularly sell the BTC they mine to cover the costs of mining equipment, electricity, and operations. When their income is halved by the halving, the new supply entering the market simultaneously decreases.

On the demand side, trends such as Bitcoin ETFs, corporate treasury allocations, and individual investor inflows have driven continuously rising demand. When spot Bitcoin ETFs were approved in the United States in January 2024, institutional investor demand surged significantly. The world’s largest asset managers, including BlackRock and Fidelity, launched Bitcoin ETFs, drawing billions of dollars in inflows in the first month alone. This created a structure in which supply decreases and demand increases simultaneously.

The Stock-to-Flow Model: The Mathematics of Bitcoin Scarcity

Frequently mentioned in halving analysis, the Stock-to-Flow (S2F) model is the ratio of the existing stock divided by the annual new production.

In the case of gold, approximately 200,000 tons currently exist above ground, and roughly 3,000 tons are newly mined each year. The S2F ratio is approximately 60–67. This is the mathematical reason gold has functioned as a store of value for thousands of years. It means it would take over 60 years to mine the same amount that already exists, so supply increases cannot easily dilute the value of existing holders.

Bitcoin’s S2F doubles with each halving. Before the third halving, it was approximately 27, and after the halving it rose to approximately 56 — a level similar to gold’s. After the fourth halving (2024), it reached approximately 112, twice that of gold. Mathematically, Bitcoin becomes a scarcer asset than gold with each successive halving.

PlanB (an anonymous Dutch institutional investor) popularized this model and argued that the S2F ratio has a strong correlation with market value. However, the S2F model’s predictions diverged significantly during the 2022–2023 bear market, revealing its limitations. Critics note that S2F only reflects the supply side and fails to account for demand fluctuations. Nonetheless, it continues to be referenced as an intuitive framework for explaining the relationship between supply scarcity and value.

Myths and Realities Surrounding the Halving

Several misconceptions about the halving deserve clarification.

The simplification that “prices always go up after a halving” is dangerous. While historical patterns exist, countless variables — macroeconomic conditions, regulatory trends, technological developments, market sentiment — influence price. Immediately after the 2024 halving, Bitcoin’s price did not instantly skyrocket, and the market moved amid a balance of complex factors.

There is also the concern that “if mining becomes unprofitable after the halving and miners quit, Bitcoin will collapse.” But Bitcoin’s difficulty adjustment mechanism automatically compensates for this. If miners leave, the difficulty decreases, and the remaining miners can find blocks more easily while still turning a profit. The network has a self-correcting mechanism built in.

The true importance of the halving is not short-term price movements. The halving proves every four years that Bitcoin’s monetary policy cannot be altered by any external power, any crisis, or any temptation. No central bank in the world has ever locked its monetary policy into code for the next 100 years. Bitcoin has accomplished what seemed impossible, and the halving is a recurring ceremony that reaffirms this fact.