What is Bitcoin Hard Fork

What is Bitcoin Hard Fork? How It Works, Forks in Blockchain

A bitcoin hard fork is a significant alteration to a protocol’s network that makes previously invalid blocks and transactions legitimate — or vice versa. It also necessitates that all of its nodes or users upgrade to the most recent version of the protocol software.

Forks can occur if developers or community members become dissatisfied with the existing blockchain’s operation. Forks can also occur due to crowdsourced fundraising for new technological initiatives or cryptocurrency offers.

A blockchain fork can occur on any cryptocurrency platform, not just Bitcoin. Blockchain blocks may be thought of as cryptographic keys in charge of shifting memory. The hitch is that all miners must agree to the new regulations. So, if you wish to update the rules, you must “fork it,” i.e., express the information that the protocol has changed in the same way as a fork in the road does.

Bitcoin forks are divisions in the transaction chain caused by differing user perspectives on transaction history. These splits result in new versions of Bitcoin money and are a natural byproduct of the blockchain system’s structure, which functions without a central authority. These forks provide multiple purchasing options for the coin.

Several forks perform diverse functions, and some have held their worth better than others.

The Meaning of Bitcoin Hard Fork

Cryptocurrency arose due to the downturn, which caused a rapid upheaval in the cash market. The plan was to create computerised money and a sophisticated trading framework that was unrestricted by anybody.

A Bitcoin hard fork results from precise modifications to a present convention. A fork is defined as a collection of various roots growing from the same tree.

Because of advancements in its convention, Bitcoin’s blockchain is also divided into two distinct branches. Such a split results in the formation of two forks, one with the old shape and one with the improved form.

When a fork happens, the software previously used for mining is rebuilt, and the same technique through the newly created software is brought into use for mining. As Bitcoin grew in popularity, the blockchain technology upon which it was constructed stalled, making the entire system less reliable and transaction fees more costly. As a result of the lag, Bitcoin needed to devise a solution that could grow as more customers purchased and sold the commodity. That’s when the forks came into play.

Forks enable an alternative development structure and experimentation inside the Bitcoin platform without jeopardising the original product. The initial Bitcoin was built on 1-megabyte blocks, which proved to be restricted as the cryptocurrency grew in popularity. These forks can occur on bigger blocks and result in the creation of a new currency.

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How Do Bitcoin Hard Forks Work?

From a technical point of view, an unintentional or transient fork is a break in the blockchain that happens when two or more valid blocks have the same hash.

These are all distinct cryptocurrencies inside the Bitcoin family, each with its own set of regulations. They are all cryptocurrencies; however, they are not the same as Bitcoin.

This occurs in proof-of-work (POW) blockchain systems when two or more miners complete the POW algorithm at approximately the same time. As soon as both miners locate the proper solution to the proof of work, they broadcast their “winning” blocks to their network neighbours, who then spread the block they initially got farther down the line across the network.

History of Bitcoin Hard Forks

Bitcoin Cash and Bitcoin Gold are the two primary Bitcoin hard forks, although there are others.

  • Bitcoin XT

Bitcoin XT was one of the first noteworthy bitcoin hard forks. Mike Hearn launched the programme in late 2014 to add various new features he had requested. While the previous version of bitcoin permitted up to seven transactions per second, Bitcoin XT aimed for 24. It advocated raising the block size from one megabyte to eight megabytes to accomplish this.

In the late summer of 2015, Bitcoin XT achieved initial success, with over 1,000 nodes running its software. However, the initiative quickly lost user interest and was effectively abandoned by its users. Bitcoin XT is no longer available, and its original website is no longer operational.

  • Bitcoin Classic

Even when the price of Bitcoin XT fell, some members of the community wanted block sizes to grow. As a result, in early 2016, a group of developers released Bitcoin Classic. Unlike XT, which advocated raising the block size to eight megabytes, classic only planned to raise it to two megabytes.

Bitcoin Classic, like Bitcoin XT, experienced early interest, with over 2,000 nodes active for many months in 2016. The project is still active today, with some developers enthusiastically promoting Bitcoin Classic. Nonetheless, the greater Bitcoin community appears to have shifted to alternative possibilities.

  • Bitcoin Unlimited

Since its inception in early 2016, Bitcoin Unlimited has remained a mystery. The project’s developers provided code but did not explain what kind of fork was required. Bitcoin Unlimited distinguishes itself by enabling miners to choose the size of their blocks, with nodes and miners restricting the size of blocks they accept to 16 megabytes.

  • Bitcoin Cash Hard Fork

Bitcoin Cash is a Bitcoin hard fork that happened on August 1, 2017. It was created to address Bitcoin’s issues with delayed transactions and latency. To accomplish so, it employs 8-megabyte blocks rather than the original Bitcoin’s 1-megabyte blocks, making it simpler to grow as more users connect with the service.

  • Bitcoin Gold Hard Fork

Bitcoin Gold is a separate hard split that happened in October 2017 to make Bitcoin mining a more egalitarian process that just requires minimal equipment. It is mined using standard graphics processing units rather than specialised gear designed specifically for Bitcoin mining (referred to as “ASICs”—application-specific integrated circuits), which is more expensive and confined to a few large players.

The goal was to strengthen the independence and decentralisation inherent in the original Bitcoin concept.

Other Types of Bitcoin Hard Forks

In addition to these two major hard forks, the Bitcoin system has seen a flurry of other hard forks and experimentation. Here are a couple more hard forks and when they began.

  • Bitcoin Diamond: November 2017
  • Bitcore: November 2017
  • Super Bitcoin: December 2017
  • Bitcoin God: December 2017
  • Bitcoin Atom: January 2018
  • Bitcoin Private: January 2018
  • Bitcoin Zeo: September 2018
  • Bitcoin Post-Quantum: December 2018.


  • Bitcoin forks are a change in the protocol of Bitcoin that result in the emergence of a new branch.
  • Soft forks do not result in creating a new currency, but hard forks are deeper alterations inside the blockchain that result in creating new forms of blockchain money.
  • Holders of tokens in the original blockchain will be issued tokens in the new fork, but miners must pick which blockchain to continue validating in a hard fork.

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