Complete list of crypto hardforks

It allows miners to decide the size of their blocks but limits it to 16 megabytes. Though it had gained some interest, it failed to gain acceptance. Segregated Witness SegWit : It aimed to reduce the size of every bitcoin transaction so more transactions could take place simultaneously.

It also aimed to reduce transaction malleability — ensuring that rogue nodes were no longer able to change transaction details. Also read: 5 things you should not do when investing in cryptocurrencies Bitcoin Cash: Some Bitcoin users and developers wanted to avoid the upgrades that SegWit brought about. Hence, they created a hard fork called Bitcoin Cash. The fork was split from the main blockchain in August of It is one of the most successful forks, backed by many prominent figures.

This hard fork aimed to ease the mining process by using only the basic hardware. While people could earlier mine bitcoin using even personal computers, the growing mining difficulty led to the creation of some specialised mining hardware. The Bitcoin Gold fork aimed to make mining accessible by tweaking the hardware requirements. So, Bitcoin Gold is mined on a standard graphics processing unit, whereas Bitcoin is mined using specialised application-specific integrated circuits ASICs.

It is the largest of all Bitcoin forks, with a size exceeding 2. Also read: Dogecoin is excited by Elon Musk taking control of Twitter, and so are Bitcoin and Ethereum Taproot: Taproot is a soft fork that went live on 12 November , after block Block was mined. The updates are a bit complex, but they basically improved scalability, increased privacy, and facilitated enhanced smart-contract functions of the Bitcoin blockchain. However, just a few months later, the project lost user interest and was essentially abandoned by its users.

Bitcoin XT is no longer available, with its original website now defunct. Bitcoin Classic When Bitcoin XT declined, some community members still wanted block sizes to increase. In response, a group of developers launched Bitcoin Classic in early Unlike XT, which proposed increasing the block size to eight megabytes, classic intended to increase it to only two megabytes.

Like Bitcoin XT, Bitcoin Classic saw initial interest, with about 2, nodes for several months during The project also still exists today, with some developers strongly supporting Bitcoin Classic. Nonetheless, the larger cryptocurrency community seems to have generally moved on to other options.

Bitcoin Unlimited Bitcoin Unlimited has remained something of an enigma since its release in early The project's developers released code but did not specify which type of fork it would require. Bitcoin Unlimited set itself apart by allowing miners to decide on the size of their blocks, with nodes and miners limiting the size of blocks they accept, up to 16 megabytes.

Despite some lingering interest, bitcoin unlimited has largely failed to gain acceptance. Put simply, SegWit aims to reduce the size of each bitcoin transaction, thereby allowing more transactions to take place at once. SegWit was technically a soft fork.

However, it may have helped to prompt hard forks after it was originally proposed. Bitcoin Cash In response to SegWit, some bitcoin developers and users decided to initiate a hard fork in order to avoid the protocol updates it brought about. Bitcoin Cash was the result of this hard fork. It split off from the main blockchain in August , when Bitcoin Cash wallets rejected bitcoin transactions and blocks.

Bitcoin Cash remains the most successful hard fork of the primary cryptocurrency. As of June , it is the eleventh-largest digital currency by market cap , owing in part to the backing of many prominent figures in the cryptocurrency community and many popular exchanges. Bitcoin Cash allows blocks of eight megabytes and did not adopt the SegWit protocol. Bitcoin Gold Bitcoin Gold was a hard fork that followed shortly after bitcoin cash, in October The creators of this hard fork aimed to restore the mining functionality with basic graphics processing units GPU , as they felt that mining had become too specialized in terms of equipment and hardware required.

Although it was initially possible to mine bitcoin using personal laptops and desktop computers, the growing mining difficulty, as well as the advent of Application Specific Integrated Circuit ASICs hardware created specifically for bitcoin mining, has made it all but impossible to profitably mine bitcoin at home using the processing speed of an individual computer.

Some bitcoin forks, including Bitcoin Gold, have attempted to make bitcoin more accessible by changing the hardware necessary to establish a network connection. One unique feature of the Bitcoin Gold hard fork was a "pre-mine," a process by which the development team mined , coins after the fork had taken place. Many of these coins were placed into a special "endowment," and developers have indicated that this endowment will be used to grow and finance the bitcoin gold ecosystem, with a portion of those coins being set aside as payment for developers as well.

Generally, Bitcoin Gold adheres to many of the basic principles of bitcoin. However, it differs in terms of the proof-of-work PoW algorithm it requires of miners. SegWit2x When SegWit was implemented in August , developers planned on a second component to the protocol upgrade. This addition, known as SegWit2x , would trigger a hard fork stipulating a block size of two megabytes. SegWit2x was slated to take place as a hard fork in November However, a number of companies and individuals in the bitcoin community that had originally backed the SegWit protocol decided to back out of the hard fork in the second component.

To some extent, the backlash was a result of SegWit2x including opt-in rather than mandatory replay protection; this would have had a major impact on the types of transactions that the new fork would have accepted. On November 8, , the team behind SegWit2x announced that their planned hard fork had been canceled as a result of discrepancies among previous backers of the project.

The simplest way to conceptualize a fork in a cryptocurrency's blockchain is to imagine that the fork introduces a new set of rules for bitcoin to follow. After a fork, bitcoin's blockchain diverges into two potential paths forward. After a new rule is introduced, the users mining that particular bitcoin blockchain can elect to follow one set of rules or another.

This choice is similar to a fork in the road. What Was the First Bitcoin Fork? The two biggest bitcoin hard forks are Bitcoin Cash and Bitcoin Gold, although there have been other, smaller forks. When Did Bitcoin Fork? Forks are typically conducted in order to add new features to a blockchain. Bitcoin has undergone many different forks since it was first introduced in Each of these splits has created new versions of the bitcoin currency.

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