What Is a Validator?
A validator is the proof-of-stake counterpart of a miner: an operator running node software with coins bonded behind it, taking turns proposing and attesting blocks. Honest work earns rewards; provable cheating burns the bond. Ethereum runs about a million validator slots; Solana runs fewer, heavier ones.
How It Actually Works
- Stake goes in (32 ETH per Ethereum validator; delegation pools open the door below that), duties get assigned pseudo-randomly, and uptime plus honesty accrue staking yield.
- Slashing punishes double-signing and related attacks; mere downtime just leaks small penalties. The economics make sustained dishonesty self-destructive, the core of proof of stake.
- Most people never run one: they delegate to validators through staking pools, exchanges, or liquid staking protocols, inheriting the operator's performance and slashing risk.
Risks and Common Mistakes
- Delegating purely by advertised yield: fee structure, uptime history, and concentration matter more. Routing everything to the biggest pools is individually convenient and collectively centralizing.
- Ignoring who controls the validator when using staking services: custodial staking is a counterparty relationship wearing protocol clothes.
- Home validating without appetite for ops: missed duties leak money quietly. It is a job, if a small one.
When It Matters
Choosing how to stake, evaluating decentralization claims (validator counts and stake distribution are the honest metrics), and understanding corporate-scale staking stories like the one on my learn page.
Related Terms
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