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    Blockchain validators are responsible for verifying transactions on a blockchain. Once verified, validators add the verified transactions to the distributed ledger. In proof of work (PoW) systems like Bitcoin, validators (known as miners) verify transactions and receive rewards for solving complex computational math problems. In proof of stake (PoS) systems, validators receive rewards for staking the network’s token and correctly participating in the network. Staking helps secure the network by locking value in the network. Validators stake their tokens in exchange for participation in consensus decisions.