Definition ∞ Protocol mutability refers to the capacity of a blockchain’s underlying rules and code to be changed or updated after its initial deployment. This characteristic dictates how easily a network can adapt to new technologies, fix vulnerabilities, or implement community-driven improvements. Protocols can range from highly immutable, requiring hard forks for changes, to more mutable, allowing for easier upgrades through on-chain governance. It concerns the flexibility of a system’s core design.
Context ∞ News frequently reports on discussions and proposals regarding protocol upgrades, particularly for networks with active governance mechanisms. The degree of protocol mutability is a key factor in a blockchain’s adaptability and long-term viability. Understanding how a protocol handles changes provides essential context for evaluating its resilience against future challenges and its capacity for innovation.