Staking

What Is Staking?

Staking is the act of depositing and locking cryptocurrency into a proof-of-stake (PoS) blockchain to participate in transaction validation and block production. In exchange for committing capital and running validator software, stakers earn periodic rewards: typically a combination of newly minted tokens and transaction fees.

Proof-of-stake was designed as an alternative to proof-of-work mining, which secures networks like Bitcoin through computational effort and electricity consumption. Instead of racing to solve cryptographic puzzles, PoS validators put up financial collateral. If they act honestly, they earn rewards. If they misbehave, they lose money. The security model shifts from "it costs too much energy to attack" to "it costs too much capital to attack."

As of 2026, approximately $245 billion is staked across PoS networks globally, with an average staking ratio of about 34% of circulating supply. Ethereum alone has over 35 million ETH staked by more than 1.1 million active validators.

How It Works

The staking process varies by blockchain, but the core mechanics follow a consistent pattern. Using Ethereum as the most widely staked network:

1. A validator deposits the minimum required stake (32 ETH on Ethereum) into the network's staking contract
2. The validator runs node software that stays online and connected to the network
3. The protocol randomly selects one validator per time slot (every 12 seconds on Ethereum) to propose a new block
4. A randomly chosen committee of validators attests to the validity of the proposed block
5. Honest participation earns rewards; dishonest behavior triggers slashing penalties

Ethereum organizes time into 12-second slots grouped into 32-slot epochs. Each epoch, every active validator is assigned to attest exactly once. The proposer for each slot is selected pseudo-randomly, weighted by effective balance.

Validator Selection

PoS systems use different approaches to choose who produces the next block. Ethereum uses a RANDAO-based random selection weighted by stake. Cosmos-based chains use a round-robin system weighted by voting power. Solana assigns a leader schedule for an entire epoch in advance.

Some networks use delegated proof-of-stake (DPoS), where token holders vote for a smaller set of elected validators rather than running validator software themselves. Cosmos, Polkadot, and EOS use variations of this model. DPoS trades some decentralization for higher throughput, since fewer validators means faster consensus.

Slashing Penalties

Slashing is the mechanism that makes staking a genuine commitment rather than a passive deposit. Validators lose a portion of their staked funds if they violate protocol rules. On Ethereum, three behaviors trigger slashing:

• Double proposing: submitting two different blocks for the same slot
• Surround voting: casting an attestation that contradicts a previous one in a way that could enable a chain reorganization
• Double voting: attesting to two different blocks for the same target checkpoint

The initial slashing penalty on Ethereum is relatively small (approximately 0.0078 ETH for a 32 ETH stake). However, a correlation penalty applied 18 days into the 36-day forced exit period scales dramatically based on how many validators were slashed simultaneously. If 5% of the total stake is slashed within a 36-day window, each slashed validator loses roughly 15% of their effective balance. The maximum penalty is the validator's entire stake.

Unbonding Periods

Staked tokens cannot be withdrawn instantly. Networks impose unbonding (or cooldown) periods to prevent validators from quickly unstaking to avoid penalties or to destabilize the network during attacks. Current unbonding periods for major chains:

These lockup periods create a liquidity tradeoff that has driven the growth of liquid staking protocols, which issue tradable receipt tokens representing staked positions.

Staking Rewards

Staking yields vary significantly by network and depend on factors like total stake, inflation schedule, and fee revenue. Current approximate annual yields:

Nominal APY can be misleading. Networks with high inflation pay higher staking rewards, but non-staking holders are diluted. The "real yield" (rewards minus inflation) is a more meaningful metric. Ethereum's relatively modest 3.3% APY comes with minimal inflation, making nearly all of it real yield.

Protocol Staking vs. DeFi "Staking"

One of the most common sources of confusion in crypto is the overloaded use of the word "staking." The two meanings describe fundamentally different activities:

When a DeFi protocol advertises "stake your tokens for 20% APY," it typically means depositing tokens into a liquidity pool or lending contract. These yields come from trading fees or token incentives, not from securing a blockchain. The risk profile is entirely different: smart contract exploits and flash loan attacks replace slashing as the primary concern.

Staking vs. Bitcoin Mining

Bitcoin uses proof-of-work, where miners compete by expending computational energy to solve cryptographic puzzles. The core differences:

• Capital type: PoS requires financial collateral (tokens); PoW requires physical hardware (ASICs) and electricity
• Energy consumption: PoS uses a fraction of the energy since there is no competitive puzzle solving
• Barrier to entry: PoS requires acquiring tokens; PoW requires specialized hardware, cheap electricity, and cooling infrastructure
• Penalty mechanism: PoS slashes misbehaving validators; PoW penalizes attackers through wasted electricity and orphaned block rewards
• Decentralization tradeoffs: PoW trends toward geographic concentration near cheap energy; PoS trends toward concentration among large token holders

Bitcoin's proof-of-work is not being replaced by staking. The Bitcoin network considers PoW essential to its security model and monetary policy. However, Bitcoin-adjacent staking has emerged through protocols like Babylon, which lets BTC holders stake their bitcoin to secure other PoS chains without giving up custody. For more on this development, see the Bitcoin restaking deep dive.

Liquid Staking

Liquid staking protocols solve the liquidity problem of traditional staking. Instead of locking tokens with no access, users deposit into a staking pool and receive a liquid receipt token (like stETH from Lido or rETH from Rocket Pool) that represents their staked position.

These receipt tokens can be traded, used as collateral in DeFi protocols, or held for yield appreciation. Lido dominates the liquid staking market, holding approximately 24% of all staked ETH (around 8.7 million ETH). The top five liquid staking protocols collectively control about 94% of the liquid staking market on Ethereum.

Liquid restaking extends this concept further, allowing staked ETH to simultaneously secure additional protocols. EigenLayer leads this space with over $16 billion in TVL.

Use Cases

• Network security: the primary purpose of staking is to secure PoS blockchains by making attacks economically prohibitive. An attacker would need to acquire a majority of staked tokens, risking slashing of their entire position (compare this to a 51% attack in PoW)
• Passive income: stakers earn yield on otherwise idle tokens. For institutional holders, staking transforms a non-productive asset into one that generates returns comparable to stablecoin yield strategies
• Governance participation: many PoS networks tie staking to governance rights, meaning stakers vote on protocol upgrades and parameter changes
• Securing external protocols: restaking allows staked assets to provide economic security to bridges, oracles, and rollups beyond the base layer chain

Risks and Considerations

Slashing and Validator Risk

Running a validator incorrectly can result in slashing. Even without malicious intent, software bugs, misconfigured infrastructure, or cloud provider outages can trigger penalties. Solo stakers bear this risk directly. Delegators using staking services face the risk that their chosen validator operates poorly.

Liquidity Risk

Unbonding periods mean stakers cannot react quickly to market downturns. If a token drops 50% during a 21-day unbonding period, the staker is forced to watch. Liquid staking mitigates this but introduces smart contract risk and possible depeg of the liquid staking token from the underlying asset.

Centralization Pressure

Staking rewards compound: validators with more stake earn more rewards, enabling them to stake even more. Without mechanisms to counteract this, PoS systems trend toward oligopoly. Liquid staking amplifies this concern when a single protocol like Lido controls a quarter of all staked ETH.

Regulatory Uncertainty

The regulatory status of staking remains unsettled. In February 2023, the SEC fined Kraken $30 million and forced it to shut down its US staking service (which held $2.7 billion in staked assets). In June 2023, the SEC sued Coinbase over its staking products. However, the SEC dismissed its Coinbase case in February 2025 with no penalties, and by 2026 had removed cryptocurrency as a standalone examination priority. The regulatory direction continues to evolve.

Smart Contract Risk

Staking through liquid staking protocols, restaking platforms, or DeFi "staking" products introduces smart contract risk. Bugs or exploits in these contracts can result in loss of staked funds, regardless of the underlying protocol's security.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.