Definition

Validator

A node operator on a Proof-of-Stake blockchain who stakes the native token to earn the right to propose and validate blocks.

Validators replace miners in PoS systems. Instead of competing on hash power, they stake the native token (32 ETH on Ethereum, variable on other chains) and the protocol pseudo-randomly selects which validator proposes each block. Other validators attest to the block's validity to reach consensus.

Validators earn rewards from new issuance and transaction fees, weighted by stake size and uptime. They're penalized ("slashed") for double-signing or extended downtime — slashing can take 1% of stake on minor offenses to 100% on coordinated attacks. The economic model aligns validator incentives with network security.

Most retail users don't run validators directly (32 ETH minimum on Ethereum is ~$100K+). Instead, they delegate via staking pools (Lido, Rocket Pool) or exchange staking services. This delegation enables broad participation but concentrates effective control in pool operators.

Why it matters

Validators are the sole entities producing blocks in PoS systems. Their distribution determines decentralization; their incentives determine network security.

How CryptoRadar24 tracks it

CryptoRadar24 references validator distribution and staking-pool concentration when reporting on Ethereum and other PoS networks.

Related terms

Liquid staking
Staking native tokens (ETH, SOL, etc.) through a protocol that issues a tradable receipt token, allowing the staked position to remain liquid and used elsewhere in DeFi.
Block reward
The newly minted coins paid to a miner or validator for proposing a valid block, plus the transaction fees in that block.
Governance Token
A token granting holders voting rights over protocol decisions and treasury management.

FAQ

How is a validator different from a miner?

Miners use computational power (PoW) to compete for blocks. Validators stake capital (PoS) and are selected pseudo-randomly. Different security model, similar role in block production.

What is slashing?

A penalty mechanism in PoS that destroys part of a validator's stake when they double-sign or significantly fail to attest. Slashing aligns validator incentives with honest behavior.

How much can validators earn?

On Ethereum, base APR is roughly 3-5% on staked ETH, varying with total network stake. Higher stake = lower yield per validator (issuance is divided among more validators).

Can I run a validator myself?

Yes — Ethereum requires 32 ETH and a 24/7 reliable server. Smaller stake holders typically delegate via liquid-staking protocols or exchanges instead.