What is restaking and how EigenLayer turns staked ETH into shared security

Introduction

Ethereum’s shift to proof of stake in September 2022 created a pool of financial safety: over 30 million ETH staked by validators who threat dropping their deposit (slashing) in the event that they behave maliciously. This safety pool protects Ethereum, however it sits idle with respect to each different protocol.

New protocols that want decentralized validation face a bootstrapping downside. An oracle community, a knowledge availability layer, or a cross-chain bridge wants validators, and people validators want financial stakes giant sufficient to make assaults unprofitable. Constructing this safety from scratch is dear. Every new protocol should appeal to its personal set of stakers, problem its personal token for staking rewards, and hope that sufficient capital commits to make the system safe.

Restaking proposes a unique mannequin. As an alternative of constructing unbiased safety, new protocols borrow it from Ethereum. Stakers who have already got ETH dedicated to Ethereum’s consensus decide in to moreover securing different providers. The identical capital backs a number of protocols concurrently.

EigenLayer formalized this idea and constructed the infrastructure for it. This information explains how restaking works, what EigenLayer launched, and the place the dangers compound.

How Ethereum staking works earlier than restaking

To grasp restaking, begin with what it extends.

Ethereum validators deposit 32 ETH right into a staking contract. In return, they earn rewards for proposing and testifying to blocks (presently round 3% to 4% annualized). If a validator acts maliciously (double-signing, proposing conflicting blocks) or goes offline for prolonged durations, a portion of their 32 ETH is slashed.

This creates an financial safety assure. Attacking Ethereum’s consensus requires controlling sufficient staked ETH that the price of being slashed exceeds the revenue from the assault. With over 30 million ETH staked (roughly $100 billion at mid-2026 costs), that threshold is prohibitively excessive.

Liquid staking protocols like Lido (stETH) and Rocket Pool (rETH) added a layer on prime. Customers deposit ETH, obtain a liquid token representing their stake, and might use that token in DeFi whereas nonetheless incomes staking rewards. The underlying ETH stays staked with validators. For an in depth breakdown of how liquid staking tokens work and the depeg dangers they carry, the mechanics are necessary context for understanding the extra threat layer that restaking introduces.

Restaking provides a second layer on prime of staking (or liquid staking). The identical ETH that secures Ethereum additionally secures extra protocols.

EigenLayer’s structure

EigenLayer is a set of good contracts on Ethereum that coordinate restaking. The system has three roles:

Restakers. Customers who commit their staked ETH (or liquid staking tokens like stETH) to EigenLayer. Restakers deposit into EigenLayer’s contracts and delegate their stake to an operator.

Operators. Entities that run validation software program for actively validated providers. An operator registers with EigenLayer, receives delegated stake from restakers, and opts into a number of AVSs. Operators are answerable for assembly every AVS’s validation necessities and face slashing in the event that they fail.

Actively validated providers (AVSs). Protocols that use EigenLayer’s restaked safety. An AVS defines its personal validation logic, reward construction, and slashing circumstances. When an operator opts into an AVS, the restaked ETH backing that operator turns into topic to the AVS’s slashing guidelines.

The circulation:

1. A restaker deposits stETH (or native ETH) into EigenLayer.
2. The restaker delegates to an operator.
3. The operator opts into AVSs (for instance, EigenDA, a knowledge availability service).
4. The operator runs the AVS’s validation software program.
5. The restaker earns extra rewards from the AVS, on prime of their base Ethereum staking yield.
6. If the operator violates an AVS’s guidelines, the delegated stake could be slashed.

EigenLayer’s contracts implement the delegation and slashing logic, however they don’t outline what constitutes a slashable offense. Every AVS writes its personal slashing contract, which EigenLayer’s DelegationManager calls when a slashing occasion is confirmed. This modularity is what permits any kind of protocol to turn into an AVS, however it additionally means the safety of every AVS’s slashing logic varies independently.

What actively validated providers appear like

AVSs are the demand aspect of the restaking market. They’re protocols that want decentralized validation however don’t wish to construct their very own validator set and token economic system from scratch.

The primary and largest AVS is EigenDA, a knowledge availability layer constructed by EigenLayer’s group. Rollups can submit their transaction knowledge to EigenDA as a substitute of Ethereum’s calldata or blobs, lowering prices whereas inheriting safety from restaked ETH. By mid-2026, EigenDA was processing knowledge for a number of L2 rollups, offering a substitute for Celestia and Ethereum’s native blob house.

Different AVS classes embrace:

Oracle networks. A decentralized oracle can use restaked ETH as its safety bond as a substitute of requiring oracles to stake a separate token. If an oracle submits a false value, the restaked ETH backing it will get slashed. This offers stronger financial ensures than a standalone oracle token with a small market capitalization.

Cross-chain bridges. Bridge validators could be backed by restaked ETH, creating an financial deterrent towards fraudulent attestations far bigger than what a standalone bridge token might present. Provided that bridge exploits have prompted over $4 billion in losses, the attraction of Ethereum-grade safety for bridge validation is critical.

Keeper networks. Protocols that require off-chain computation or automation (liquidation keepers, MEV relayers) can use restaked safety to ensure efficiency. An AVS slashing contract can penalize operators who fail to execute required actions inside a time window.

Coprocessors. Off-chain computation providers that produce verifiable outcomes, equivalent to ZK proof era or AI inference verification, can use AVS slashing to implement right output. This class is increasing as extra protocols look to confirm off-chain computation with out operating it on-chain.

By mid-2026, over 20 AVSs had launched on EigenLayer, with EigenDA processing the very best quantity. EigenLayer’s enlargement to simply accept any ERC-20 token as a restakable asset broadened the potential collateral base past ETH and its liquid staking derivatives.

Liquid restaking tokens: the third layer

Simply as liquid staking created tradable representations of staked ETH (stETH, rETH), liquid restaking protocols create tradable tokens representing restaked positions.

The main liquid restaking protocols:

Ether.fi (eETH). The most important liquid restaking protocol by TVL. Customers deposit ETH, Ether.fi stakes it and restakes it via EigenLayer, and customers obtain eETH that they’ll use throughout DeFi. Ether.fi outpaced rivals within the liquid staking sector by providing a streamlined one-step deposit circulation and integrating with main DeFi protocols for composability.

Renzo (ezETH). Abstracts the EigenLayer delegation course of. Customers deposit ETH or stETH, Renzo handles operator choice and AVS opt-in, and customers obtain ezETH. Renzo differentiates by providing diversified AVS publicity: the protocol spreads delegated stake throughout a number of operators and AVSs to scale back focus threat.

Puffer (pufETH). Focuses on solo validator participation and anti-slashing expertise alongside liquid restaking. Puffer’s method contains secure-signer expertise that goals to forestall validators from producing slashable messages, even when their keys are compromised.

Kelp (rsETH). Aggregates restaked positions throughout operators and AVSs right into a single liquid token. Kelp goals to offer diversified restaking publicity just like an index fund method.

LRTs add comfort but additionally add one other layer of good contract threat. The stack turns into: ETH -> staked ETH -> liquid staking token -> restaked on EigenLayer -> liquid restaking token. Every layer introduces its personal contract, its personal governance, and its personal potential failure mode. A bug or exploit at any layer can cascade downward.

The arithmetic of shared safety

Restaking’s worth proposition is determined by easy economics.

Suppose a brand new oracle community wants $100 million in financial safety to make assaults unprofitable. With out restaking, it should persuade stakers to purchase and lock $100 million price of its native token. The token wants value stability, liquidity, and market confidence, none of which a brand new venture has on day one.

With restaking, the oracle community turns into an AVS on EigenLayer. It borrows safety from ETH already staked, a liquid asset with deep markets and established worth. The oracle doesn’t problem a staking token. It pays ETH-denominated rewards to operators, and the $100 million in restaked ETH backing these operators offers the safety.

The associated fee to the AVS is the reward it should pay operators (and by extension restakers) to decide in. That is sometimes denominated within the AVS’s personal token or in ETH. The associated fee is decrease than bootstrapping a standalone staking economic system as a result of restakers already earn base staking yield. The AVS solely wants to supply sufficient marginal reward to justify the extra slashing threat.

For restakers, the attraction is yield stacking. A place may earn:

• 3.5% from Ethereum consensus staking
• 0.5% from liquid staking protocol charges
• 1% to three% from AVS rewards through restaking

Combination yields of 5% to 7% on ETH drew vital capital into restaking throughout 2024 and 2025. At its peak, EigenLayer held over $15 billion in restaked belongings, making it one of many largest DeFi protocols by TVL.

Nonetheless, yield stacking is just not free cash. Every extra proportion level of yield comes with a corresponding enhance in threat publicity. The upper the combination yield, the extra slashing vectors the place is uncovered to.

Slashing threat: the place restaking will get harmful

The compounding of yield comes with compounding of threat. Restaked ETH is topic to slashing from a number of sources concurrently.

Ethereum consensus slashing. If the underlying validator double-signs or commits an attributable fault, the bottom stake is slashed underneath Ethereum’s guidelines. This threat exists with or with out restaking.

AVS slashing. Every AVS the operator opts into introduces its personal slashing circumstances. An operator operating three AVSs faces three unbiased units of slashing guidelines. A bug in any single AVS’s slashing contract might set off an incorrect slash.

Correlated slashing. If an operator runs a number of AVSs and a single infrastructure failure (a knowledge middle outage, a key compromise) causes violations throughout all of them, the identical stake could be slashed a number of occasions. EigenLayer’s contracts allow proportional slashing, which means the overall slash can exceed what would happen from any single AVS.

Sensible contract threat in slashing contracts. AVS slashing logic is outlined in good contracts written by the AVS group. A bug within the slashing contract might slash sincere operators. Not like Ethereum’s consensus slashing, which has been battle-tested since 2020, AVS slashing contracts are new and fewer audited.

LRT compounding threat. Customers holding liquid restaking tokens face all of the above dangers plus the good contract threat of the LRT protocol itself, and the chance that the LRT depegs from its underlying worth throughout a slashing occasion or a liquidity disaster.

Systemic threat. If a large-scale slashing occasion hits a significant operator, the ensuing promote stress on LRTs might set off cascading liquidations in DeFi protocols that settle for LRTs as collateral. A restaking-linked liquidation cascade has not occurred but, however the structural chance exists as extra DeFi protocols combine LRTs as collateral sorts.

The aggressive panorama past EigenLayer

Restaking is not an EigenLayer monopoly.

Symbiotic launched in 2024 as a permissionless restaking protocol. Not like EigenLayer, which initially solely accepted ETH and liquid staking tokens, Symbiotic accepts any ERC-20 token as collateral. This permits protocols to restake their very own governance tokens or stablecoins. Symbiotic’s structure can be extra modular: slashing circumstances, reward distribution, and operator administration are separated into distinct contracts that every AVS can customise independently.

Karak launched the idea of restaking throughout a number of chains, with help for restaking on Arbitrum, Mantle, and different L2s along with Ethereum mainnet. Karak’s multi-chain method appeals to AVSs that need safety from belongings on chains apart from Ethereum, and to restakers who wish to keep away from bridging to Ethereum mainnet.

Babylon applies the restaking idea to Bitcoin. BTC holders lock their Bitcoin in a time-locked script and use it to safe proof-of-stake chains. The Bitcoin by no means leaves the Bitcoin blockchain (no wrapping, no bridging), however it’s topic to slashing through a cryptographic penalty mechanism known as extractable one-time signatures. If a staker indicators conflicting messages, the EOTS scheme reveals their non-public key, permitting anybody to say the locked Bitcoin as a penalty.

The emergence of rivals means that restaking is changing into a class, not a single product. The long-term query is whether or not safety fragmentation throughout competing restaking layers weakens the shared safety mannequin that makes restaking precious within the first place. If the identical capital is cut up throughout EigenLayer, Symbiotic, and Karak, the safety every offers is proportionally decreased.

How operator choice shapes threat

Not all EigenLayer operators carry the identical threat profile. The selection of operator determines which AVSs your stake is uncovered to, the standard of the infrastructure operating these AVSs, and the operational maturity of the group managing the node.

Skilled operators (Figment, P2P, Kiln, and related institutional staking suppliers) sometimes run redundant infrastructure throughout a number of knowledge facilities, preserve devoted safety groups, and restrict the variety of AVSs they decide into. Solo operators or smaller groups could supply greater yields by opting into extra AVSs, however in addition they focus threat in fewer fingers and fewer resilient infrastructure.

The operator’s observe report is essentially the most dependable sign. EigenLayer’s delegation dashboard exhibits historic uptime, slashing occasions (if any), and the listing of energetic AVS commitments. An operator with 99.9% uptime throughout 12 months of operation and a conservative AVS choice offers a meaningfully completely different threat profile than a brand new operator operating aggressive multi-AVS methods.

Delegation is just not everlasting. Restakers can re-delegate to a unique operator, although the method includes a withdrawal delay. If an operator begins opting into AVSs with unclear slashing circumstances or questionable audit histories, re-delegation is the first threat administration device accessible to restakers.

What this doesn’t cowl

This information explains restaking mechanics and dangers. It doesn’t cowl:

• Detailed comparability of particular person AVSs and their reward constructions
• The tokenomics of the EIGEN token and its governance features
• Step-by-step directions for restaking via particular protocols
• The regulatory classification of restaking yields

Sensible checks earlier than restaking

Perceive operator threat. While you delegate to an operator, you inherit their slashing publicity. Evaluation which AVSs the operator has opted into, their uptime historical past, and their infrastructure setup. An operator operating 15 AVSs on a single server in a single knowledge middle is a concentrated threat.

Evaluation AVS slashing circumstances. Earlier than your operator opts into a brand new AVS, perceive what triggers a slash. Some AVS slashing circumstances are simple (fail to submit knowledge inside a window). Others are complicated or rely on dispute decision mechanisms that haven’t been examined underneath stress.

Assess LRT dangers individually. Should you maintain a liquid restaking token, you carry the restaking threat plus the LRT protocol’s good contract threat. Examine audit experiences for each the LRT protocol and the underlying restaking contracts. Think about the LRT’s redemption mechanism: some LRTs permit immediate redemption, whereas others queue withdrawals.

Monitor your place. Restaking is just not a deposit-and-forget technique. New AVSs, operator adjustments, and slashing occasions can alter your threat profile. Protocols like EigenLayer present dashboards displaying operator efficiency and AVS standing. Arrange notifications for operator adjustments if the protocol helps them.

Think about the withdrawal queue. Restaked positions could have longer withdrawal durations than easy staking. EigenLayer enforces a withdrawal delay (presently 7 days), and through high-demand durations the queue can lengthen. Don’t restake funds you might have to entry rapidly. Issue withdrawal timing into your liquidity planning.