What Is a Blockchain Node and How Does It Validate Smart Contract Execution?
A blockchain node is a computer running the blockchain software, storing a copy of the ledger and smart contract code. When a transaction calls a smart contract function, every full node independently executes the code.
They then compare results to reach consensus, ensuring the contract was executed correctly and honestly across the network.
Glossar
Smart Contract
Code ⎊ The contract is fundamentally self-executing code deployed on a distributed ledger, embodying the terms of the agreement in an immutable format.
Blockchain Node
Network Participant ⎊ A Blockchain Node is an individual computer or server connected to the decentralized network, maintaining a copy of the ledger's history or a portion thereof, and actively participating in the validation and propagation of new transactions and blocks.
Full Node
Validation ⎊ A full node is a server or computer running the blockchain's core software, responsible for downloading the entire history of the ledger and independently verifying every transaction and block against the network's consensus rules.
Node
Entity ⎊ A Node is an individual participant computer that validates transactions, maintains a copy of the ledger, and contributes to the overall security and decentralization of the cryptocurrency Network.