Node
A computer that maintains a copy of the blockchain and participates in the network by validating and relaying transactions.
Why It Matters
A node is a computer that connects to a blockchain network, helping to validate and transmit transactions. Understanding nodes is essential for grasping how decentralized networks function and maintain integrity.
Example
For instance, each Bitcoin wallet acts as a node, contributing to the network by verifying transactions and ensuring everyone has the same transaction history, enhancing trust in the system.
Beginner Context
For beginners, learning about nodes can clarify how blockchain technology operates on a decentralized level. It illustrates how user participation is vital for supporting the overall network and its security.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
Related Terms
Order Book
A real-time list of outstanding buy and sell orders for a specific trading pair on an exchange. The order book shows the supply and demand for an asset at various price levels. Centralized exchanges use order books; most DEXs use AMMs instead.
Algorithmic Stablecoin
A type of stablecoin that maintains its peg not through direct collateral reserves, but through software algorithms that automatically expand or contract the token supply in response to price changes. Unlike asset-backed stablecoins, algorithmic models are considered higher risk.
Metaverse
A collective virtual shared space that combines physical and digital reality. Several crypto projects build virtual worlds and economies within metaverse platforms.
Block Explorer
A web-based tool that allows anyone to search and browse all transactions, wallet addresses, and blocks on a blockchain. Tools like Etherscan and Mempool.space are popular block explorers.
MEV
Maximal Extractable Value. The profit that can be extracted by reordering, including, or excluding transactions within a block. MEV bots front-run and sandwich transactions on public mempools, which can worsen execution for ordinary users.