Staking is the process of locking up cryptocurrency in a Proof of Stake network to support its operations (transaction validation, security) in exchange for rewards. It's the PoS equivalent of mining in Proof of Work systems.
How Staking Works
Users deposit (stake) their tokens into the network, either by running a validator node themselves or by delegating their tokens to an existing validator. Staked tokens are locked for a period and earn rewards proportional to the amount staked.
Staking Rewards
Annual yields vary by network: Ethereum offers approximately 3-5% APR, while other networks may offer higher returns. Rewards come from newly minted tokens (inflation) and transaction fees.
Liquid Staking
Liquid staking protocols (Lido, Rocket Pool) let users stake their tokens while receiving a liquid derivative token (stETH, rETH) that can be used in DeFi. This solves the illiquidity problem of traditional staking.
Risks
Slashing: Validators can lose staked tokens for misbehavior.
Lock-up Period: Staked tokens may have an unbonding period.
Smart Contract Risk: When using liquid staking protocols.