Full node

In plain words

A full node is a computer that downloads every Bitcoin block and checks every payment against the rules — no shortcuts, no trust. It doesn't believe miners, companies, or other nodes; it checks everything itself. Thousands of people doing this independently is what makes the rules real: a block that breaks them gets rejected, no matter who mined it. Any normal computer can run one.

Why it matters

• Your own node is your own proof — you check your money instead of taking someone's word.
• Nodes enforce the rules. Miners propose blocks; nodes decide if they count.
• The more independent nodes, the harder it is to change Bitcoin quietly.

Not to be confused with

• Miner — builds new blocks. A node checks them; most nodes don't mine.
• Wallet — holds your keys. A node checks history; Bitcoin Core includes both.

Go deeper

• Bitcoin Core — the software most full nodes run.
• Pruned node
• Why run a node?