Validators are rewarded with block rewards for validating transactions on a blockchain network. Block rewards are a form of incentive given to validators, or miners, for verifying and adding a block of transactions to the blockchain. This reward is usually in the form of cryptocurrency, such as Bitcoin or Ethereum, and is designed to incentivize people to secure the network by validating transactions. The amount of the reward is determined by the consensus algorithm used by the blockchain network, and is usually proportional to the amount of work done by the validator. Block rewards are an important part of the blockchain network, as they provide an incentive for people to help secure the network and ensure its integrity.