Bitcoin Halving Explained

A Bitcoin halving cuts the block subsidy, not the price or the balance in anyone’s wallet. It changes the rate of new issuance according to the protocol’s block schedule.

Bitcoin Mining

Bitcoin miners assemble candidate blocks and compete to find a hash meeting the network’s target. A valid block can earn a subsidy and transaction fees. Nodes independently validate blocks, while the difficulty adjustment helps maintain the target average interval.

Bitcoin Halving

Bitcoin halving, also known as “the halvening,” is a pre-programmed event coded into the Bitcoin protocol. It occurs approximately every four years or after every 210,000 blocks mined. This mechanism is designed to control the issuance rate of new Bitcoins, ensuring a gradual and predictable supply growth. The process involves reducing the rewards miners receive for validating transactions by half. Initially set at 50 Bitcoins per block when Bitcoin was launched in 2009, the first halving in 2012 reduced this reward to 25 Bitcoins. Subsequent halvings in 2016 and 2020 further halved the block rewards to 12.5 and 6.25 Bitcoins, respectively. The fourth halving occurred on April 20, 2024 UTC at block 840,000, reducing the subsidy to 3.125 BTC. The next is scheduled for block 1,050,000, expected around 2028; its calendar date is an estimate.

Why would miners keep paying for equipment and electricity after a halving? Their revenue comes from the block subsidy plus transaction fees, while costs and Bitcoin’s market price vary. Some operations remain profitable and others do not; a price increase is not guaranteed to offset the smaller subsidy.

The Rationale Behind the Halving

This reduction in block rewards serves a critical purpose: the controlled issuance of new Bitcoin. Unlike traditional fiat currencies with their inflationary nature, Bitcoin boasts a finite supply capped at 21 million coins.

The halving slows the creation of new coins. It does not make existing coins disappear, and scarcity alone does not establish a legal classification or guarantee rising purchasing power.

Potential Benefits for Bitcoin Holders

For Bitcoin holders, the direct effect is slower growth in new supply. The price outcome depends on demand, market expectations and wider conditions. Earlier post-halving rallies are historical observations, not a timetable for the next one. Here are the main considerations:

• Supply Growth: The subsidy halves, reducing the rate of new issuance.

• Price: Lower issuance can matter, but demand and market conditions determine whether prices rise or fall.

• Market Attention: A halving may attract coverage; it does not guarantee adoption or liquidity.

• Mining Economics: Lower subsidy changes miners’ revenue. Security depends on the resulting mining incentives, fees, costs and participation.

• Long-Term Value: A capped supply is a protocol property, not a guarantee that Bitcoin preserves wealth.

Post Halving Data

The following data outlines the price movement 100 days and a year after each halving event. It is vital to note that past performance is no guarantee of future results.

First halving: 28 November 2012

• Start: $12

• +100 days: $42

• +365 days: $964

Second halving: 9 July 2016

• Start: $663

• +100 days: $609

• +365 days: $2,550

Third halving: 11 May 2020

• Start: $8740

• +100 days: $11,950

• +365 days: $57,000

A Prudent Approach

A halving changes miner subsidy according to the block schedule. Price depends on demand and market conditions, while miner economics also depend on costs and transaction fees.

Halving dates are part of Bitcoin’s issuance rules; bullish price trends are not. Macroeconomics, demand, regulation and technology can change the outcome, even when the supply schedule is known in advance.

Conclusion

The 2024 halving has already taken place. It reduced the block subsidy to 3.125 BTC, with the next scheduled reduction at block 1,050,000, expected around 2028. Understanding the difference between a predictable issuance rule and an unpredictable market response helps holders and miners assess what the event actually changes.

DISCLAIMER: Cryptocurrencies are high-risk investments, and investors should be prepared to lose all funds. The information provided in this blog post is for informational purposes only and does not constitute financial advice. Unitywallet does not provide investment recommendations. Remember, your capital is always at risk when investing in cryptocurrencies.