Definition
A validator performs protocol-defined consensus duties. In proof-of-stake networks, participation commonly involves committed assets and requirements for running appropriate software. The precise role depends on the network. An ordinary full node can validate data without necessarily being a selected consensus validator.
How It Works
Validators may be assigned to propose a block, attest to a chain view or vote on checkpoints. The protocol specifies valid messages, timing and rewards or penalties. Some networks allow direct delegation, while other participation routes are provided by separate services or contracts. The operator and the owner of the stake are not always the same party.
Key Considerations
Validator activity does not guarantee a positive investment return. Downtime, specified misconduct, service fees and token-price changes can affect outcomes. Slashing applies only according to the network’s defined conditions, not uniformly to every mistake. Concentration of operators, stake or software can affect resilience. Users should distinguish the protocol’s rules from the claims and withdrawal policies of a staking provider.