Staking Explained

Where staking fits

Under proof of stake, the right to propose and attest to blocks is allocated among validators according to the stake committed to them. Capital at risk replaces expended energy as the cost of misbehaving, which is the core difference from proof of work.

Validators and delegation

• A validator is a node that participates in consensus, with a stake bonded to it and an operator responsible for keeping it online and correct.
• Running a validator directly generally requires meeting a network-specific minimum, operating reliable infrastructure, and managing keys carefully.
• Delegation, where the network supports it, lets a holder assign stake to a validator without operating the node. Delegated stake usually remains owned by the delegator.
• Validator operators typically take a commission from rewards. Commission rates are set by the operator and can change.

Where rewards come from

• Protocol issuance — new units created by the network and distributed to those securing it.
• Transaction fees and, on some networks, tips paid by users for inclusion.
• Rewards are variable by design. They depend on total stake participating, validator performance, network activity and protocol parameters that can change.
• Rewards denominated in the network's own asset do not protect against the market price of that asset moving.

A reward rate is not interest and is not a yield promised by an institution. It is a variable protocol output, and it can fall.

Slashing and penalties

• Slashing is the protocol removing part of a stake for provable misbehaviour, such as signing conflicting blocks.
• Inactivity penalties are smaller and more common: a validator that is offline simply earns less or loses a little.
• Delegators are usually exposed to penalties incurred by the validator they chose, which is why operator reliability matters.
• Penalty rules are network-specific and defined in each protocol's own specification.

Lockups, unbonding and liquidity

• Many networks impose an unbonding or exit period between requesting a withdrawal and receiving the assets.
• During that period the assets typically earn nothing and cannot be sold.
• Some networks also queue entries, so joining is not instantaneous either.
• Liquid staking arrangements issue a separate token representing the staked position. That token is a distinct asset with its own market price, smart-contract risk and liquidity conditions.

Custodial vs protocol staking

• Protocol staking through your own wallet keeps custody with you, with the operational responsibility that implies.
• Custodial staking through a platform means the platform holds the assets. You take on that company's credit, operational and policy risk in addition to protocol risk.
• Platform terms may allow suspension of withdrawals, changes to reward sharing, or reallocation of the underlying stake.
• Products described as staking are not always protocol staking. Some are lending or structured products with entirely different risk.

Risks to weigh

• Price risk on the staked asset, which usually dwarfs reward variation.
• Lockup risk: being unable to exit during the period you most want to.
• Slashing and validator performance risk.
• Smart-contract risk for liquid staking and any pooled arrangement.
• Counterparty risk for custodial arrangements.
• Tax treatment of staking rewards varies by jurisdiction and can be uncertain; in the United States, consult IRS guidance and a licensed professional rather than assuming a treatment.

Sources

• Ethereum developer documentation — Proof of stake
• IRS — Digital assets
• Investor.gov (SEC) — Introduction to investing