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Glossary

Node

Definition

A computer running blockchain software that stores, validates, and relays transactions and blocks, helping enforce the network's rules and maintain its shared ledger.

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CamoCrypt EditorialPublished Sep 8, 2026 · 1 min read · Human-edited, sources cited

A node is any computer running a blockchain’s software and participating in its network. Nodes receive transactions and blocks, check them against the protocol’s rules, store a copy of the ledger, and relay valid data to their peers. A full node independently verifies the entire history and current state, rejecting anything that breaks the rules, rather than trusting another party’s word.

Why it matters

The number and distribution of independent nodes is a core measure of a blockchain’s decentralisation and resilience. Because full nodes enforce the rules themselves, no single actor can quietly change the protocol or spend coins invalidly without being rejected. Running your own node also lets you verify your transactions and balances directly instead of relying on a third-party service that could be wrong or dishonest. Light clients, by contrast, save resources by trusting full nodes for parts of that verification, which is convenient but reintroduces a degree of trust that a full node avoids.

Common misunderstanding

Nodes and miners or validators are often conflated. Every miner or validator runs a node, but most nodes neither mine nor validate blocks; they simply verify and relay data. Ordinary full nodes do not earn block rewards, yet they are essential to enforcing the network’s rules. The more independently operated nodes there are, the harder it is for any single party to change the protocol or push through invalid transactions unnoticed, which is why node count and geographic spread are watched as health metrics.

See validator, consensus mechanism, blockchain and proof of work.

Frequently asked questions

Is running a node the same as mining?
No. Mining or validating is the process of producing new blocks and earning rewards. Running a node means verifying and relaying data. All block producers run nodes, but most nodes do not produce blocks.

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