A blockchain validator is someone who is responsible for verifying transactions on a blockchain. Once transactions are verified, they are added to the distributed ledger. In proof of work systems like Bitcoin, validators, also known as miners, solve complex computational math problems to verify transactions and receive rewards for the “work.” In proof of stake systems like Avalanche, validators are given rewards as long as they stake the network’s token (AVA). This consensus mechanism also helps secure the network.

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