Protocol

A protocol in blockchain refers to the set of rules that define how data is exchanged and validated across the network. Blockchain protocols govern everything from transaction validation, consensus mechanisms, block creation, and security. These rules ensure that all participants in the network follow the same standards, making it possible for decentralized systems to operate securely and consistently. Examples of well-known blockchain protocols include Bitcoin, Ethereum, and Polkadot, each with unique rules for consensus, governance, and operation.