Bitcoin Forks: How the Blockchain Evolves

Bitcoin Forks: How the Blockchain Evolves

Lightspark Team
Lightspark Team
Jul 1, 2025
5
 min read

Key Takeaways

  • Protocol Change: A Bitcoin fork is a fundamental alteration to the network's software rules.
  • Community Division: Forks happen when developers and miners disagree on the network's future direction.
  • New Currency: A hard fork can create a new, separate blockchain and its own cryptocurrency.

What is a Bitcoin Fork?

A Bitcoin fork is a change to the software protocol that governs the network. Think of it as an update. These occur when developers, miners, and users disagree on the rules for validating transactions or creating new blocks. This divergence in the code can be minor or it can fundamentally alter the direction of the Bitcoin (BTC) blockchain.

Forks come in two main types: soft and hard. A soft fork is a backward-compatible upgrade, while a hard fork is a permanent split, creating a new, independent blockchain and currency. The most famous example is the 2017 fork that created Bitcoin Cash (BCH) from Bitcoin (BTC) due to disagreements over increasing the 1MB block size limit.

Types of Bitcoin Forks

Forks are pivotal moments in Bitcoin's evolution, serving as upgrade mechanisms for the network's protocol. These changes are not all created equal; they vary in their implementation and impact on the blockchain's integrity. Understanding these distinctions is key to grasping the network's governance and future trajectory.

  • Hard Fork: A permanent divergence from the previous version of the blockchain, creating a new and separate currency.
  • Soft Fork: A backward-compatible software upgrade where new rules do not conflict with the old ones.
  • Accidental Fork: A temporary split that occurs when multiple miners find a block at nearly the same time.
  • User-Activated: A fork initiated by the consensus of node operators and users, not just miners.
  • Miner-Activated: A fork triggered by the mining community, often to implement technical improvements.

Reasons for Bitcoin Forks

Bitcoin forks are born from a need to improve the network or from deep-seated disagreements within its community. These changes are proposed to guide the protocol's evolution, addressing technical limitations or philosophical differences. The core drivers for these splits are often multifaceted.

  • Scalability: To increase the number of transactions the network can process.
  • Functionality: To add new features, such as improved privacy or smart contract capabilities.
  • Security: To patch critical vulnerabilities discovered in the existing code.
  • Governance: To resolve disputes over the protocol's rules and future direction.

Notable Bitcoin Forks in History

The most prominent split occurred in 2017, creating Bitcoin Cash (BCH). This hard fork was the result of a long-standing debate over how to scale the network, with BCH proponents advocating for larger block sizes. This event demonstrated how ideological divides could lead to the creation of entirely new digital assets from the original code.

The chain-splitting did not stop there. A year later, Bitcoin Cash itself forked, leading to Bitcoin SV (Satoshi's Vision). This subsequent fork was driven by a different philosophical vision for the protocol's future, highlighting the dynamic and often contentious nature of decentralized governance.

Impact of Bitcoin Forks on Users and the Network

Bitcoin forks have significant consequences for both individual holders and the entire network's stability. These protocol changes can introduce both opportunities and risks, altering the value and perception of the cryptocurrency.

  • Innovation: Forks can introduce new features and address scalability issues, pushing the technology forward.
  • Division: They can fracture the community and development efforts, weakening the network effect.
  • Value: Users holding the original coin often receive an equivalent amount of the new forked coin, creating potential new value.
  • Confusion: The creation of new versions can confuse users and dilute the brand identity of Bitcoin.

How to Prepare for a Bitcoin Fork

This is how you can safeguard your assets and potentially claim new coins during a network split.

  1. Monitor developments from trusted crypto news outlets and developer communities to understand the fork's timeline and technical details.
  2. Secure your private keys. Transfer your Bitcoin from exchanges to a personal wallet where you have sole control over your funds.
  3. Halt all transactions as the fork approaches. Pausing activity helps protect your assets from potential replay attacks or network instability during the split.
  4. After the network stabilizes, follow verified guides to access your forked coins. Use a wallet that supports the new chain to claim them securely.

The Lightning Network: Scaling Bitcoin Without a Fork

While hard forks attempt to solve scalability by altering Bitcoin's core protocol, the Lightning Network offers a different path. It operates as a second layer, processing transactions off-chain without needing a contentious fork. This approach avoids splitting the community and the blockchain itself. By handling small, frequent payments in its own network of channels, the Lightning Network increases transaction throughput while keeping the main Bitcoin blockchain secure and unchanged, demonstrating a powerful method for scaling that sidesteps the risks of a protocol schism.

Join The Money Grid

Rather than waiting for divisive forks, you can tap into Bitcoin's next evolution now through the Money Grid. Lightspark offers this global payments network, built on Bitcoin and the Lightning Network, for instant, worldwide transfers of value across digital and traditional currencies.

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FAQs

What is a Bitcoin fork?

A Bitcoin fork is a change to the network's underlying software protocol, which can result in either a backward-compatible update (a soft fork) or a permanent divergence that creates a new version of the blockchain (a hard fork).

What are the types of Bitcoin forks?

Bitcoin forks come in two primary forms: soft forks, which are backward-compatible software upgrades, and hard forks, which are non-backward-compatible changes that can result in the creation of a new cryptocurrency.

Why do Bitcoin forks happen?

Bitcoin forks happen when a segment of the community proposes changes to the network's protocol that are not backward-compatible, leading to a split in the blockchain. These divisions typically arise from fundamental disagreements on how to scale the network or improve its features, resulting in two separate versions of the currency with distinct rules.

What are the most notable Bitcoin forks?

Among the many Bitcoin forks, Bitcoin Cash (BCH) and Bitcoin SV (BSV) stand out as the most significant. Both emerged from contentious debates over how to scale the network, primarily by increasing the block size to handle more transactions.

How do forks affect Bitcoin holders?

A soft fork is a simple software upgrade with no direct impact on a holder's assets. A hard fork, however, can split the blockchain and create a new coin, which is typically distributed to all existing Bitcoin holders based on their holdings at the time of the split.

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