What Are Blockchain Forks? A Comprehensive Guide

Blockchain Forks have been a hot topic in the crypto space. In this piece we take a look at what are blockchain forks.

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Blockchain forks is another crucial sector in blockchain development. This article delves deep into the world of blockchain forks, shedding light on what they are and how they work. We aim to offer a comprehensive guide that educates and empowers you to understand this crucial concept in cryptocurrencies and blockchain technology.


Introduction to What Are Blockchain Forks

Blockchain forks are a fundamental concept in the realm of blockchain technology. They can confuse beginners, but fear not; we are here to simplify it for you. A blockchain fork occurs when there is a significant divergence in the blockchain’s protocol rules, resulting in two chains with distinct transaction histories. This concept can be compared to a fork in the road, where the blockchain takes two paths.


Types of Blockchain Forks

There are primarily two types of blockchain forks: hard and soft.


Hard Forks

A hard fork is a radical change to the blockchain protocol that is not backward compatible. This means that after a hard fork occurs, the new blockchain is entirely separate from the old one and no longer shares a transaction history. It results in creation of a new cryptocurrency, distinct from the original.


Soft Forks

In contrast, a soft fork is a backward-compatible update to the blockchain protocol. This means nodes running the older software version still accept the new rules introduced in a soft fork. Soft forks do not result in creating a new cryptocurrency but aim to improve the existing blockchain’s functionality.


Now That We Know What are Blockchain Forks, Why They Happen?

Blockchain forks can occur for various reasons, including:

  • Protocol Upgrades: developers may propose blockchain protocol changes to enhance security, scalability, or functionality. These proposed upgrades can lead to forks.
  • Community Disagreements: differences in opinion within the blockchain community can lead to contentious forks, where some of the community supports the new rules while others stick to the old ones.
  • Bug Fixes: in some cases, forks are necessary to fix critical bugs or vulnerabilities in the blockchain’s code.


The Forking Process

Let’s explore how a typical blockchain fork unfolds:

  1. Proposal: a change to the blockchain’s protocol is proposed by developers or stakeholders. This proposal is thoroughly discussed within the community.
  2. Consensus: the community must reach a consensus to implement the proposed changes. This often involves miners and node operators agreeing to the new rules.
  3. Activation: once consensus is achieved, the new rules are activated at a predetermined block height or timestamp.
  4. Fork Occurs: at the specified block height or timestamp, the blockchain splits into two separate chains, each following its rules.


Examples of Prominent Forks


Bitcoin Cash (BCH)

One of the most well-known hard forks in the cryptocurrency world occurred in 2017 when Bitcoin Cash was created due to disagreements over Bitcoin’s scalability.


Ethereum (ETH) and Ethereum Classic (ETC)

Ethereum experienced a hard fork in 2016 following the infamous DAO hack. This led to the creation of Ethereum Classic, which continued to follow the original blockchain’s rules.



In conclusion, blockchain forks are an integral part of the blockchain ecosystem. They represent the evolution and adaptation of blockchain technology to meet the community’s ever-changing needs. Whether it’s a hard fork or a soft fork, understanding these concepts is essential for anyone interested in cryptocurrencies and blockchain technology.

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