Definition
A node is a computer or device that participates in a blockchain network by connecting to other devices and handling blockchain data. As a network role, it maintains a copy of relevant blockchain information, communicates with other nodes, and helps keep the network linked together. Different kinds of nodes may focus on storing data, checking data, or supporting other network activities.
In Simple Terms
A node is a connected computer in a blockchain network. It stores blockchain information and talks to other computers in the network. By doing this, it helps keep the blockchain running and keeps the shared data in sync between many different machines.
Context and Usage
The term node is used when describing how a blockchain network is structured and how its participants are organized. It appears in discussions about network size, security, and how information is shared across many machines. Conversations about running blockchain software, connecting to a network, or describing different network participants commonly refer to nodes as basic building blocks of the system.