# What is a Bitcoin node?

A Bitcoin node is a computer that checks every block and transaction against the rules. Learn what nodes do, why to run one and what it takes.

Canonical page: https://mybitcoinexplorer.com/learn/what-is-a-bitcoin-node
Topic: Nodes and the network
Published: 2026-10-29
Updated: 2026-10-30


## The rule enforcers
A full node downloads every block and checks **everything**: every signature, every amount, the proof of work, the block reward. If anything breaks a rule, the node rejects it, whoever sent it.

> Diagram: What a full node checks for every new block — 

## What a node does
- Keeps a copy of the [blockchain](https://mybitcoinexplorer.com/learn/what-is-the-blockchain) (or a [pruned](https://mybitcoinexplorer.com/learn/full-vs-pruned-nodes) one).
- Keeps the current UTXO set, so it knows which coins exist.
- Relays valid transactions and blocks to its [peers](https://mybitcoinexplorer.com/learn/peer-to-peer-network).
- Serves your own wallet, so you don't have to trust someone else's server.

## Why run your own?
- **Verify, don't trust:** you know your incoming payments are real and the rules are being followed, including the [21 million cap](https://mybitcoinexplorer.com/learn/bitcoin-supply-21-million).
- **Privacy:** your wallet asks your node about your addresses, not a third party.
- **A vote in upgrades:** nodes decide which rules they accept. See [Consensus rules](https://mybitcoinexplorer.com/learn/consensus-rules).

## What it takes
A modest computer, a few hundred GB of disk (or much less if pruned), and a decent internet connection. Bitcoin Core is the most widely used software.

### Worked example: MyBitcoinExplorer's node
Everything you see on MyBitcoinExplorer comes from our own Bitcoin Core node, with no third-party explorer data. Watch it verify history on our [status page](/status).



## What you need to run one
| Resource | Typical requirement |
|---|---|
| Disk | About 900 GB for a full archival node, or a few GB pruned |
| Memory | 2 GB minimum; more speeds up the first sync |
| Internet | A stable connection; hundreds of GB in the first sync |
| Hardware | A desktop, laptop or small single-board computer with an SSD |

## Node-in-a-box options
Several community projects package Bitcoin Core with a simple web interface for small home computers, making it easy to run a node and connect your wallet to it.


## Key takeaways

- A full node independently checks every block and transaction.
- It relays data and can serve your own wallet privately.
- Running a node means verifying instead of trusting.

## Common questions

### Do I earn bitcoin by running a node?

No. Nodes don't earn rewards; miners do. Nodes give you independent verification and privacy.

### Is a node the same as a miner?

No. Miners create blocks; nodes check them. A miner needs a node, but most nodes don't mine.

### Do I earn money running a Bitcoin node?

No. Nodes don't receive rewards; they give you independent verification and privacy.

### Can I run a node on a laptop?

Yes, especially in pruned mode, though it should stay online regularly to keep up.

## Related lessons

- [Full nodes vs pruned nodes](https://mybitcoinexplorer.com/learn/full-vs-pruned-nodes)
- [Consensus rules](https://mybitcoinexplorer.com/learn/consensus-rules)
- [Initial block download (IBD)](https://mybitcoinexplorer.com/learn/initial-block-download)
- [The peer-to-peer network](https://mybitcoinexplorer.com/learn/peer-to-peer-network)