Proof of stake, in practice
What validators actually do, what slashing punishes, and where the yield comes from.
At a glance
- Proof of stake replaces energy spent with collateral posted — a bond the protocol can destroy for misbehaviour.
- Slashing punishes provable equivocation, not ordinary downtime, which only leaks a small amount of expected reward.
- Staking yield comes from two sources: new issuance (a transfer from all holders) and transaction fees (real income).
Proof of stake replaces electricity with collateral. Instead of proving you burned power to earn the right to propose a block, you post a bond that the protocol can destroy if you misbehave.
A validator does two jobs: propose blocks when selected, and attest to blocks proposed by others. Both are largely automated. The operational work is keeping a node online and correctly configured, because the penalties are calibrated to punish absence and contradiction rather than incompetence.
Slashing is narrower than most people assume. It punishes provable equivocation — signing two conflicting versions of history — and it is rare. Ordinary downtime earns a small leak of rewards, not destruction of the bond.
The yield has two sources. Newly issued tokens, which dilute everyone who is not staking, and transaction fees paid by users. Only the second is real income; the first is a transfer from holders to stakers.
Key terms
- Validator
- A network participant who has posted collateral in exchange for the right to propose and attest to blocks.
- Slashing
- Destruction of part of a validator's staked bond as punishment for provable equivocation.
- Delegated staking
- Staking through a pool or exchange rather than running your own validator infrastructure.
Frequently asked
Can I lose my entire stake if my validator goes offline?
No. Ordinary downtime causes a small, gradual leak of expected rewards, not destruction of the staked bond — only proven equivocation triggers slashing.
Do I need to run my own validator to earn staking rewards?
No. Most networks and exchanges offer delegated or pooled staking, letting you earn a share of rewards without operating infrastructure yourself.
Is proof of stake less secure than proof of work?
They secure the network through different economic mechanisms — collateral at risk versus energy spent — and both have large, established networks running securely on each.