Validator Definition - Glossary

A validator is a network participant that verifies transactions and maintains blockchain integrity.

A validator is a crucial participant in blockchain networks, especially in proof-of-stake systems. Validators are responsible for verifying transactions, adding new blocks to the blockchain, and ensuring network integrity. They do this by staking a certain amount of cryptocurrency as collateral. Validators are selected to propose and validate blocks based on their stake and other factors like randomness. If they act dishonestly, they risk losing their staked assets. This system encourages validators to act in the network's best interest, maintaining security and consensus across the blockchain. Validators are essential for decentralized and secure blockchain operations.