Hard Fork: What Happens When a Cryptocurrency Splits In Two?

Plus, they allow the implementation of patches for security, usability, scalability and so forth. A big difference between regular networks and blockchains is that there’s not just a single governing body. Instead, everyone participating in the network must agree with the proposed fork. The other type of fork stemming from intention forks is soft forks. Hard and soft forks are similar in that when a blockchain rule is changed, the old version remains in the network while the new one is also present – both creating a split.

As a result, a cryptocurrency’s underlying code is in some ways always a work of progress, open to both exploitation and improvement as technology changes. The hard fork also helped DAO token holders get their ether (ETH) funds returned. Hard forks occur for a variety of reasons from a need to improve a blockchain to irreconcilable disagreements among members of a crypto community. Since Bitcoin launched, there have been many crypto innovations that can make existing products better. That has led to multiple Bitcoin forks and inspired forking of other cryptocurrencies. Some cryptocurrencies copy the open source software of one currency, make tweaks to that code, and create a new cryptocurrency as a result.

Examples of Hard Forks

Terri Harden shows an aerial photo of the damage done to the mobile home park that she owned after an EF-4 tornado tore through Rolling Fork, Mississippi, last year on Saturday, March 23, 2024. Harden said she unsuccessfully tried to present a proposal to city officials for a new mobile home park to replace it. The belief that forks stem from disagreements also complicates things. It helped recover the funds for the hack victims and the community supported it almost unanimously. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Some of those forks can be planned, and are referred to has Planned Hard Forks, where as sometimes there is no plan in place, and they fall into the Contentious/Unplanned Hard Fork category.

• It feels like a real turning point when the old things are going away and interesting new ones are coming in to replace them.
• After the attack, the Ethereum (ETH) network split into two cryptocurrencies, each on their own blockchain.
• As such, it requires that all developers upgrade to the latest version of the protocol software.
• It could be to add new functions and features to the blockchain protocol in order to make it better, more competitive or even cross-compatible with other blockchains.
• A hard fork is different from a soft fork, which is a protocol change that does not cause a rejection of the pre-existing rule set.

It could be to add new functions and features to the blockchain protocol in order to make it better, more competitive or even cross-compatible with other blockchains. With soft forks, a change is made to the software protocol that doesn’t clash with the code and old nodes might accept data that appears invalid to the new nodes without the user noticing. On the other hand, nodes in https://www.tokenexus.com/s will stop processing the blocks following the addition of new rules whereas soft forks allow upgraded nodes to still communicate with the non-upgraded nodes. A hard fork (or hardfork), as it relates to blockchain technology, is a radical change to a network’s protocol that makes previously invalid blocks and transactions valid, or vice-versa.

Ethereum Classic

Then there’s the more progressive Ethereum, which is also undergoing a major overhaul that some call a fork. The overhaul is intended to make the blockchain faster with lower transaction fees. It also shifted Ethereum from the current PoW (Proof-of-Work) model to the PoS (Proof-of-Stake) system, which makes the blockchain more energy efficient. Bitcoin Unlimited has remained something of an enigma since its release in March 2016. The project’s developers released code but did not specify which type of fork it would require.

Sometimes, a hard fork can have a profound impact on a blockchain and cryptocurrency. It depends on the circumstances surrounding the fork and the sentiments of the community and developers. Forks are typically conducted in order to add new features to a blockchain.

year after devastating tornado, Rolling Fork mobile home park residents fight to return home

If a hard fork is implemented without the complete agreement of other network participants, it can cause the cryptocurrency network to split into two. A hard fork essentially creates an entirely new currency as it is a permanent divergence from the previous version of the blockchain. One path will follow the new, upgraded blockchain and the other one follows the old path. The users of that particular blockchain can elect to upgrade and follow one path or not upgrade and stay with the other. The second group of blocks, called intentional forks, alter the blockchain rules and includes two different types, including hard forks and soft forks. However, it is worth noting that hard forks can also foster innovation and competition within the cryptocurrency ecosystem.

• If one group of users (or nodes) uses the old software while the others use the new software, a permanent split can occur.
• By deciding which version of the software to install on their node, the holder decided whether to move onto the new branched Bitcoin Cash or remain with the original Bitcoin, or keep both.
• Jones wishes the town fought harder for the mobile home park to come back.
• Hard forks create a permanent split, resulting in two distinct blockchains that are incompatible with each other.
• In essence, the original Bitcoin had spawned a spin-off currency and BCH was created out of thin air.
• This course explains one of the most important cryptocurrency networks, Ethereum, and how it is poised to lead the charge for decentralized finance (DeFi).

So when you want to change those rules you need to “fork it”—like a fork in a road—to indicate that there’s been a change in or a diversion to the protocol. The developers can then update all of the software to reflect the new rules. A hard fork is when nodes of the newest version of a blockchain no longer accept the older version(s) of the blockchain; which creates a permanent divergence from the previous version of the blockchain.