# Proof of Stake

> A way to secure a blockchain using locked-up coins instead of computing power. Used by Ethereum.

Canonical URL: https://fudfomo.co/glossary/proof-of-stake
Source: What The Block! Dictionary v1.0 (last updated 2026-04-25), browsable at https://wtb.fudfomo.co.

## Definition

Proof of stake replaces mining computers with validators who lock up coins as collateral. The network picks validators in turn to confirm new blocks, and they are paid for doing so.

If a validator approves something invalid, part of their stake is destroyed. This makes attacks expensive without using as much electricity as proof of work.

## Related terms

- [Staking](https://fudfomo.co/glossary/staking): Locking up your crypto to help run a blockchain. In return, you earn rewards, similar to interest.
- [Validator](https://fudfomo.co/glossary/validator): A participant in a proof-of-stake network who proposes and confirms new blocks. Earns rewards and can be slashed.
- [Consensus](https://fudfomo.co/glossary/consensus): The way a blockchain's computers agree on which transactions are valid and which version of the ledger is correct.
- [Ethereum](https://fudfomo.co/glossary/ethereum): A blockchain that lets developers build apps and issue tokens. Often called a programmable money platform.

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