Definition
A node is a computer that participates in a blockchain network by storing, validating, and sharing transaction data. Nodes help maintain the integrity and decentralization of blockchain systems by verifying transactions according to network rules. Full nodes store complete copies of the blockchain, while other node types perform specialized functions.
Simple Explanation
A node is a computer that helps keep a blockchain network running and secure.
Example
A Bitcoin full node verifies transactions independently and stores the complete blockchain history.
Why It Matters
Nodes strengthen blockchain security and decentralization.
Frequently Asked Questions
What does a node do?
It validates and shares blockchain data.
Can anyone run a node?
Yes, if they meet the technical requirements.
Do nodes earn rewards?
Some networks reward certain node operators.