A validator is a crucial participant in a proof-of-stake (PoS) blockchain network, responsible for verifying and validating transactions, proposing new blocks, and maintaining the overall integrity of the blockchain. Unlike miners in proof-of-work (PoW) systems who rely on computational power, validators in PoS systems are chosen based on the number of coins they hold and are willing to "stake" as collateral. Validators are rewarded with transaction fees and, in some cases, newly minted cryptocurrency for their role in securing the network. They play a key role in the consensus mechanism, ensuring that all transactions are legitimate and that the blockchain remains secure and tamper-proof. By staking their assets, validators have a financial incentive to act honestly, as malicious behavior can result in the loss of their staked funds. This mechanism not only ensures the security and efficiency of the network but also aligns the interests of the validators with the health and success of the blockchain ecosystem.
