Node Definition - Glossary

Node is a computer or device that participates in a blockchain network, verifying and relaying transactions.

Node is a critical component in a blockchain network. It is a computer or device that stores, verifies, and relays transaction data. Each node maintains a copy of the blockchain, ensuring security and transparency. Nodes can be full or lightweight. Full nodes store the entire blockchain, while lightweight nodes store only essential data. They validate new transactions and blocks, contributing to the network's decentralization and security. Nodes communicate with each other to maintain consensus and update the blockchain. By participating, nodes help ensure the network's integrity, making them fundamental to the operation of decentralized systems.