Overview
A fork is a divergence in a blockchain where two versions of the chain exist with different rules. Forks can be planned upgrades or community splits. They are a defining feature of decentralized networks.
How It Works
A protocol change creates a fork when some nodes adopt new rules and others do not. Hard forks split the chain; soft forks keep compatibility. Users and miners choose which chain to follow.
Why It Matters
Forks enable evolution but can fragment communities and assets. They highlight the governance of open networks. Their management requires coordination.
Related Concepts
Forks relate to Hard Forks, Soft Forks, and Consensus. They are a mechanism for Protocol upgrades.