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What is Bitcoin Halving?

Update 10 Jan 2022 • Reading Time 3 Minute
Reading Time: 3 minutes

Where does Bitcoin come from?

While gold is mined from the earth and fiat money is printed by the government, Bitcoin is “mined” by processing and validating transactions that have occurred in the bitcoin network. Bitcoin miners will be rewarded with Bitcoin once they verify one block of transactions. This is the only way to release new Bitcoin into circulation.

To get the reward, Bitcoin miners have to update the blockchain from time to time by verifying transactions made in the network into a ‘block’. The miners then compete against each other to solve a resource-intensive computational puzzle, called ‘proof of work’. The miner that manages to find the answer to the puzzle will be able to add/chain that latest ‘block’ into past transaction blocks and receive a certain amount of newly minted Bitcoin as a reward by the Bitcoin protocol.

Why Halving?

Satoshi Nakamoto wants to create a limited supply of Bitcoin, in order to do that the supply of Bitcoin needs to be restricted from time to time. This is where halving plays an important role.

The Bitcoin reward obtained by the miners for verifying one block of the transaction will be cut in half every 210,000 blocks mined, or roughly equal to 4 years. This reduction of Bitcoin reward is called ‘halving’. The table below shows the timeline of Bitcoin halving up until the time of writing this article.

Halving eventDate of The HalvingBlock NumberReward to Miner
03 January 2009050 BTC/block
#128 November 2012210,00025 BTC/block
#29 July 2016420,00012.5 BTC/block
#311 May 2020630,0006.25 BTC/block
#4Unknown, 2024840,0003.125 BTC/block

This halving event plays an important role in Bitcoin’s valuable deflationary characteristics. The reward of Bitcoin miners will decrease over time. As a result, Bitcoin becomes more scarce over time, and it will rise in value as long as demand stays at least constant. Based on the halving model, the last Bitcoin will be mined in 2140 after the 64th halving event.

The Effect of Halving

The Effect of Halving

When the first halving was introduced in 2012, Bitcoin price soared to $1,000. After the second halving in 2016, Bitcoin price soared from $700 to almost $20,000.

Halving is inevitably an important event to watch out for Bitcoin investors. The supply of new Bitcoin released will be cut in half, making it more scarce, and driving Bitcoin’s value up. As you can see in this chart above, Bitcoin’s price always went up after halving occurred.

However, the price increase is not happening instantly after the halving event, but it will occur slowly and will eventually reach its peak. After reaching its peak, the price will go down, forming a new support level that is usually higher than the support level before halving.

Effect on the market

Since Bitcoin’s halving and inflation are scheduled, the market is anticipating the halving and buy more Bitcoin before the halving or just after the halving. People believe that because bitcoin’s supply is getting more constricted, and if the demand remains the same or more, it will push the price up. Even though the effect on the price is not immediate but we can say from the data that after 6-18 months there is a significant price increase after the halving.


Bitcoin halving plays an important role to ensure that Bitcoin’s supply is limited. By scheduling the rewards of Bitcoin, we can see that there will be only 21 million Bitcoin ever created in the world. When a halving happened, miners then have less Bitcoin to sell, thus making Bitcoin become more scarce and valuable.


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