What is Node?

A node is a computer participating in a blockchain network by running its software. Full nodes keep a copy of the ledger and independently verify transactions and blocks against the rules, rejecting anything invalid. The more independent nodes there are, the more decentralized and resilient the network becomes.

This matters because nodes are the backbone of a blockchain’s trustlessness. They let anyone verify the chain without relying on a central authority, and running one is the most self-sovereign way to check your own transactions.

Example: an exchange or a careful individual might run a full node to confirm incoming deposits directly against the rules rather than trusting a third-party service.

Safety note: a network with many independent nodes is harder to censor or manipulate, while one with few nodes concentrated in few hands is more fragile, a factor when weighing risk on obscure chains. Beware scams selling “node licenses” or “node rewards” promising guaranteed passive income, as these are often disguised Ponzi schemes rather than genuine infrastructure. Related terms include blockchain, consensus, validator, and on-chain.