Validator
A participant in a Proof of Stake network who stakes cryptocurrency and is responsible for proposing and validating new blocks.
Why It Matters
Validators play a crucial role in blockchain networks by confirming transactions and maintaining the integrity of the blockchain. Understanding their function is essential for grasping how decentralized systems operate.
Example
For instance, in a proof-of-stake network, validators are chosen based on the amount of cryptocurrency they hold and are willing to 'stake,' earning rewards for their service.
Beginner Context
For newcomers to crypto, comprehending the role of validators helps clarify how blockchains reach consensus and operate efficiently without central authority.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
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Proof of Stake
A consensus mechanism where validators are chosen to create new blocks based on the amount of cryptocurrency they have staked as collateral, rather than computational power.
Staking
The process of locking up cryptocurrency in a wallet to support blockchain operations like transaction validation, in exchange for staking rewards.
Consensus Mechanism
The method by which a blockchain network agrees on the current state of the ledger. Common mechanisms include Proof of Work and Proof of Stake.
Node
A computer that maintains a copy of the blockchain and participates in the network by validating and relaying transactions.