Validators maintain the integrity and decentralization of blockchain networks by validating transactions and preventing fraudulent activities. They enhance network security and efficiency by replacing energy-intensive mining with a more sustainable validation process. Many PoS-based networks, such as Ethereum 2. 0, Cardano, and Polkadot, rely on validators to achieve consensus. Becoming a validator provides opportunities to earn rewards through staking incentives, but also involves technical and financial commitments.