When Was The First Bitcoin Halved?

First Bitcoin Halved

Bitcoin halving is one of the most important events for the cryptocurrency. Occurring approximately every 4 years, halving leads to the mining block reward being reduced by 50%. This has major implications for Bitcoin’s circulating supply and inflation rate.

But when did the very first halving take place? Looking back at this inaugural halving provides perspective on how the Bitcoin network and community reacted to this novel mechanism coded into Bitcoin’s protocol. Analyzing the lead-up and aftermath of the first halving gives context to the origins of this momentous recurring event.

In this guide, we will take a retrospective look at when the first Bitcoin halving occurred and the key things to know about this pivotal point in Bitcoin’s evolution. Studying Bitcoin’s history helps inform our understanding of the cryptocurrency and its programmed supply issuance strategy.

The Concept Of Bitcoin Halving

First, let’s quickly recap how the Bitcoin halving mechanism works. Halving is hardcoded into Bitcoin’s protocol to take place every 210,000 blocks mined on the network, which happens approximately every 4 years. Each time halving occurs, the mining block reward is cut in half.

For example, when Bitcoin launched in 2009, the block reward was 50 BTC. After the first halving, it dropped to 25 BTC, then the second halving made it 12.5 BTC, and so on until all 21 million Bitcoins were eventually in circulation by around 2140.

This gradual reduction of issuance over time is designed to control inflation and create digital scarcity. But halving also significantly impacts the revenue of Bitcoin miners supporting the network. Keeping this background in mind, let’s look at when Bitcoin experienced its very first halving.

Date Of Bitcoin’s First Halving

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Bitcoin’s first halving event took place on November 28, 2012. This occurred when block #210,000 was mined on the blockchain, triggering the code to reduce the block reward for the first time. At the time, the reward decreased from 50 BTC down to 25 BTC per block discovered.

It took about 4 years and 1 month from Bitcoin’s launch in January 2009 for the first halving to take place, roughly in line with the projected pace of a halving every 4 years. This confirmed that the halving mechanism was functioning smoothly as intended in Bitcoin’s code.

Community Reaction To First Halving

The inaugural Bitcoin halving generated significant buzz within the still relatively small cryptocurrency community, which saw the block reward reduction as a major milestone. Some early Bitcoiners even held in-person halving parties to commemorate the first halving and display homemade countdown timers.

However, there were also concerns about how severely dropping mining revenue would impact network security since far fewer people were Bitcoin mining at the time compared to now. But the first halving went relatively smoothly, proving for the first time that the network could function fine with a reduced block reward.

Price Action Around First Halving

In terms of Bitcoin’s price in the months surrounding the first halving, there was not much of an immediate impact. In the weeks before halving, the price fluctuated between $10-14. On November 28, the day of halving, Bitcoin traded right around $12.

Post-halving, Bitcoin remained rangebound between $10-14 through the end of 2012. It was not until a few months after halving that Bitcoin’s price started rising steadily, gaining momentum through 2013 to reach new highs. This set the stage for further growth.

Other Key Contexts Around First Halving

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Looking at the bigger picture at the time provides useful context as well. The first halving occurred just a few years after Bitcoin’s inception when crypto was still esoteric. Institutional and mainstream recognition was minimal.

Yet Bitcoin was slowly gaining traction among early technical adopters, evidenced by milestones in 2012 like the first Bitcoin exchange and payment processors emerging. Interest was growing, setting the foundation for mass awareness that would follow.

Takeaways From The First Halving

Bitcoin’s first halving in November 2012 represented a pivotal test of its programmed supply issuance and consensus mechanism. The cryptocurrency was still in its infancy, but successfully halving the block reward proved Bitcoin could evolve via the code as intended.

While the price impact took time to materialize, the first halving established halving as a momentous recurring event. It helped demonstrate the ability to follow a transparent monetary policy immune from manipulation. This inaugural halving marked just the beginning of Bitcoin’s journey toward mainstream adoption.


Bitcoin’s first halving was a landmark event that highlighted the possibilities of programmatic money. Analyzing the timeline and context around the inaugural halving provides insight into Bitcoin’s origins and early trajectory toward becoming digital gold.

Just over a decade later, Bitcoin halvings have gone from obscure crypto events to global spectacles. But it all started with the first halving in November 2012, when Bitcoin’s monetary policy was stress-tested for the first time.