Restaking & EigenLayer
The Complete Guide to Ethereum's Most Powerful Infrastructure Layer
What is Restaking?
Restaking is the practice of using already-staked ETH (or LSTs) to secure additional services and earn additional yield. Instead of staking your ETH only to Ethereum validators, restaking allows you to recursively commit that same capital to other protocols that need validation and economic security.
This creates a fundamental shift in how Ethereum's security budget is monetized. Rather than that security budget being monopolized by Ethereum itself, it becomes available to an entire ecosystem of services and applications. EigenLayer is the primary protocol enabling this by building a marketplace for security.
The Core Concept
Traditional staking: ETH staker → Earns Ethereum validator rewards
Restaking: ETH staker → Earns Ethereum rewards + Services rewards + Slashing risks
Restaking adds additional economic security and verification services that rely on honest behavior, backed by real financial incentives.
How EigenLayer Works
EigenLayer is a smart contract platform built on Ethereum that enables restaking. It acts as a marketplace where validators can opt-in to additional security services, and service operators can request economic security.
The Architecture
1. Delegation
Stakers deposit ETH or LSTs (Liquid Staking Tokens) into EigenLayer contracts. They can delegate to operators who manage the restaking positions.
2. Operator Registration
Operators register with EigenLayer and commit to running AVS nodes. They manage the technical infrastructure and take responsibility for the staked capital.
3. AVS Integration
Actively Validated Services (AVS) are services that need external verification. They request security from EigenLayer by offering rewards to operators.
4. Reward Distribution
Operators earn fees from AVS services. These rewards are passed through to delegators minus a commission. Stakers earn both Ethereum staking rewards and AVS service rewards.
5. Slashing
If an operator misbehaves or verifies false data, the AVS can slash their stake. This creates real economic incentive for honest behavior.
Actively Validated Services (AVS)
An AVS is any service that requires external validation and can offer economic rewards for that validation. AVS can be anything from data availability layers to light clients to application-specific rollups.
Examples of AVS
- •Data Availability: Services like EigenDA that verify data was published and made available
- •Light Clients: Protocols that verify block headers and state proofs
- •Rollup Validators: Services that validate state transitions in layer 2 systems
- •Sidechains & Appchains: Alternative chains that want Ethereum security guarantees
- •Oracle Networks: Services that verify and aggregate external data
- •Bridges: Cross-chain messaging that requires validation
The beauty of EigenLayer's design is that it's composable. Multiple AVS can share the same set of operators and stakers, creating economies of scale. An operator with $10M restaked might be validating for 5 different services simultaneously.
Liquid Restaking Tokens (LRT)
Just as liquid staking tokens (LST) like stETH enable staking without locking capital, Liquid Restaking Tokens (LRT) enable restaking without directly interacting with EigenLayer. These tokens abstract away the complexity while maintaining capital efficiency.
Major LRT Protocols
EigenRio (Rio)
Rio is a liquid restaking token that lets users restake directly. It combines multiple LSTs (stETH, rETH, etc.) and handles all the EigenLayer complexity. Users earn a portion of AVS rewards.
Key advantage: Diversified LST backing
Kelp DAO (rsETH)
rsETH is a liquid restaking token providing exposure to multiple AVS. Kelp manages the operator delegation and handles withdrawals through native staking and LST redemptions.
Key advantage: Multi-AVS exposure
Ether.fi (weETH)
Ether.fi operates its own staking service and also offers weETH for wrapped EigenLayer ETH. They run their own operators to capture AVS rewards while maintaining MEV optimization.
Key advantage: Integrated staking + restaking
Symbiotic
Symbiotic is a permissionless shared security protocol that allows any token to be used for security provision, not just ETH or LSTs. This creates more flexibility than EigenLayer.
Key advantage: Maximum flexibility
The Risks of Restaking
Restaking is powerful but comes with significant risks. Understanding these is crucial before participating.
Slashing Risk
The primary risk is operator misbehavior leading to slashing. If an operator verifies false data or behaves dishonestly, the AVS can slash all associated stake. This is permanent capital loss, not just missed rewards.
Correlated Risk
If many AVS use the same operators, a single major hack or failure could slash operators' stake across multiple services. This concentration risk grows as operators accumulate more restaked capital.
Unknown Risks
Some AVS services are new and unproven. Their security models might have bugs, vulnerabilities, or logical flaws that haven't been discovered yet. Early participants bear these discovery risks.
Liquidity Risks
During market stress, if operators are slashed and capital is locked for exiting positions, LRT holders might experience significant price divergence from the underlying assets.
Risk Mitigation Strategies
- →Start small and gradually increase exposure as you understand the risks
- →Use diversified LRT protocols that spread risk across multiple operators and AVS
- →Monitor operator performance and AVS security audits
- →Keep some capital in plain Ethereum staking as a lower-risk alternative
- →Only use well-audited AVS with significant security track records
Leading Restaking Protocols
EigenLayer (Core Protocol)
EigenLayer is the original and largest restaking protocol. It enables direct restaking of ETH and LSTs. The protocol has emerged as the industry standard for security provision, with billions in TVL and dozens of AVS.
EigenDA (Data Availability)
EigenDA is the flagship AVS using EigenLayer security. It provides data availability guarantees for rollups and other systems. Being the first major AVS, it helped prove the restaking model works in production.
AltLayer (RaaS Platform)
AltLayer is a Rollup-as-a-Service platform that uses EigenLayer security for its rollups. It demonstrates how new blockchain infrastructure can be built on top of Ethereum's security via restaking.
Babylon (Bitcoin Staking)
Babylon enables Bitcoin staking and restaking, bringing Bitcoin's security to other services. This is particularly notable as it extends the restaking paradigm beyond Ethereum.
The Restaking Economy
Restaking creates a new economic model where Ethereum's security is a commodity that can be traded and optimized. This has profound implications.
New Infrastructure Layers
Services that were previously impossible or prohibitively expensive to secure can now rent Ethereum security through restaking. This accelerates innovation in data availability, bridges, light clients, and other infrastructure.
Improved Yield Efficiency
Instead of capital earning just base staking yields, that same capital can now simultaneously earn rewards from multiple services. This improves capital efficiency across the ecosystem.
Operator Competition
Professional operators compete on technical excellence, security track record, and fee efficiency. This competition benefits both delegators and services requiring security.
Restaking Yield Breakdown
Your total yield from restaking typically consists of:
- Base Staking Yield: ~3-4% from Ethereum validators
- AVS Rewards: Variable, typically 3-20% depending on service
- Minus Operator Commission: Usually 5-10% of rewards
- Minus Slashing Risk Premium: Implicit cost of slashing risk
Key Takeaways
- →Restaking reuses staked ETH to secure additional services, creating new revenue streams
- →EigenLayer is the leading protocol enabling restaking via a marketplace for security
- →AVS (Actively Validated Services) can be anything from data availability to light clients
- →Liquid Restaking Tokens simplify participation for those not running operators
- →Slashing and correlated risks are real—start small and use diversified protocols
- →Restaking will likely power the next generation of Ethereum scaling and infrastructure