10 Apr, 24

What Makes Bitcoin Harder to Mine Following a Halving?

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The process of Bitcoin halving and its consequent effect on mining difficulty is a fascinating aspect of cryptocurrency’s economic model. This article explores how the Bitcoin halving works and why it results in an increased challenge for miners.

Bitcoin operates on a decentralized network, where transactions are verified by miners. These miners are rewarded with Bitcoin for their computational efforts. However, the Bitcoin protocol includes a mechanism known as “halving,” which periodically reduces the reward that miners receive for their work, impacting the overall mining process.

Understanding Bitcoin Halving

Bitcoin halving is an event that occurs approximately every four years, reducing the reward for mining new blocks by half. This mechanism is embedded in the Bitcoin protocol to ensure a controlled supply of new coins into the market​. Since its inception, there have been three halvings, with the first in 2012, followed by events in 2016 and 2020​.

Impact on Mining Rewards

The immediate effect of halving is the reduction in mining rewards. For example, the reward for mining a block was initially 50 BTC, which has halved several times, and is set to be 3.125 BTC after the next halving in 2024​. This decrease in rewards can make mining less profitable, especially for those with higher operational costs​.

Increased Mining Difficulty

The halving can lead to increased mining difficulty. As rewards decrease, some miners may find it unprofitable to continue mining, leading to a potential decrease in the network’s hash rate. However, the Bitcoin network adjusts the mining difficulty to ensure that block creation remains at a consistent rate, potentially making mining more challenging for the remaining miners​.

Economic Implications

The reduction in mining rewards has significant economic implications. It affects the supply of new Bitcoin entering the market, potentially increasing scarcity and driving up the value of Bitcoin. Historically, halving events have been followed by periods of price increase, although these can be influenced by various factors beyond the halving itself​.


Bitcoin halving is a crucial event that ensures the controlled supply of new coins, mirroring the extraction of precious metals like gold. While it poses challenges for miners by reducing rewards and potentially increasing mining difficulty, it also plays a vital role in the economic model of Bitcoin, affecting its scarcity and value. As the next halving approaches, it will be interesting to observe its impact on the cryptocurrency landscape.


  1. What is Bitcoin Halving? Bitcoin halving is an event programmed into the Bitcoin protocol that reduces the mining reward by half, intended to control the supply of new Bitcoin and maintain its value over time.
  2. Why Does Bitcoin Halving Make Mining Harder? While the halving itself does not directly make mining harder, the reduced rewards can lead to fewer miners participating, prompting adjustments in mining difficulty to maintain block production rates.
  3. How Often Does Bitcoin Halving Occur? Halving occurs approximately every four years or after every 210,000 blocks have been mined.
  4. What Was the Mining Reward Before the First Halving? Initially, the reward for mining a Bitcoin block was 50 BTC. This reward halves with each halving event.
  5. What Are the Implications of Bitcoin Halving for Miners? Halving reduces the reward for mining new blocks, which can affect miners’ profitability and incentivize efficiency improvements in mining technology.

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