DeFi & Crypto Technical
Validator
A node operator securing a PoS blockchain by staking and validating transactions — earns rewards, faces slashing risk.
Definition
A validator is a node operator on a Proof of Stake blockchain who stakes crypto-assets to validate transactions and propose blocks. Validators earn staking rewards and face slashing for misbehaviour. Running a validator may itself fall within MiCA staking-as-a-service scope if operated commercially.