Staking is the act of locking up a cryptocurrency in a Proof of Stake (PoS) network to help secure it and, in return, earn a share of newly issued coins or transaction fees. Instead of competing with computing power like Bitcoin miners, stakers put capital at risk: the network selects participants to propose and confirm blocks roughly in proportion to how much they have staked, and larger or longer-committed stakes get selected more often.
There are several ways to take part. Solo staking means running your own validator node and claiming the full reward, but many chains set a high minimum, Ethereum requires 32 ETH, so most retail holders instead join a staking pool, use a delegated staking system, or opt for liquid staking, where a protocol issues a tradeable receipt token representing the locked coins so the capital is not fully idle. Centralized exchanges also offer custodial staking, trading some yield for convenience.
Rewards are paid in the staked asset itself, so a rising annual percentage yield does not protect against a falling token price. Validators who go offline or approve conflicting blocks can be penalized through slashing, losing part of their stake, which is why choosing a reliable validator or pool matters. Most networks also impose an unbonding period before staked coins and rewards become withdrawable, ranging from instant to several weeks depending on the chain.
By replacing energy-intensive mining with capital commitment, staking underpins the security of major networks like Ethereum and has become a core building block of on-chain finance, feeding directly into DeFi strategies such as yield farming.