Skip to content

EigenLayer

Introduction

EigenLayer is a restaking protocol built on Ethereum that allows already-staked ETH to be reused to provide cryptoeconomic security for other decentralized services. Through EigenLayer, stakers can choose to "restake" their staked assets into multiple middleware, data availability layers, sidechains, oracle networks, and other services, earning additional yields on top of Ethereum staking rewards.

EigenLayer was developed by Eigen Labs starting in 2021 and was founded by former University of Washington professor Sreeram Kannan. The protocol's core innovation is the concept of "shared security" -- new decentralized services do not need to establish their own validator networks and token economies but can instead rent Ethereum's security. This significantly lowers the barrier to launching new protocols while providing higher capital efficiency for ETH stakers.

EigenLayer's mainnet launched in June 2023 and quickly attracted billions of dollars in TVL, becoming one of the most watched innovations in DeFi during 2023-2024. The protocol plans to launch the native EIGEN token for governance and as an additional economic security layer.

Core Features

1. Restaking Mechanism

Users can restake through two methods: - Native Restaking: Restake ETH directly at the Ethereum consensus layer - LST Restaking: Deposit liquid staking tokens (such as stETH, rETH) into EigenLayer

2. AVS (Actively Validated Services)

Various decentralized services can connect to EigenLayer for security: - Data availability layers (e.g., EigenDA) - Oracle networks - Cross-chain bridges - Sequencer networks - Consensus protocols - MEV relays

3. Operator Network

Node operators can choose: - Which AVSs to serve - Accept delegation from restakers - Earn service fees paid by AVSs - Bear corresponding slashing risks

4. Modular Security

AVSs can customize slashing conditions: - Define malicious behavior based on service type - Set slashing ratios and penalty mechanisms - Automated execution through smart contracts

5. Liquid Restaking

Supports multiple LST tokens: - Lido's stETH - Rocket Pool's rETH - Coinbase's cbETH - Frax's sfrxETH, etc.

6. Delegation Mechanism

Users can delegate their restake to professional operators without running their own nodes.

Core Advantages

1. Shared Security

New protocols do not need to cold-start their own validator networks and can directly use Ethereum's security.

2. Capital Efficiency

ETH can simultaneously provide security for Ethereum and multiple AVSs, improving capital utilization.

3. Lower Startup Costs

AVSs do not need to issue tokens or build validator ecosystems, lowering project launch difficulty.

4. Additional Yields

Stakers earn extra fees paid by AVSs on top of Ethereum staking returns.

5. Flexibility

Operators and stakers can freely choose which AVSs to participate in, optimizing allocation based on risk and return.

6. Composability

EigenLayer can seamlessly integrate with existing liquid staking protocols.

Development History

Concept Phase (2021-2022)

  • Sreeram Kannan proposed the restaking concept
  • Published whitepaper outlining the shared security vision
  • Secured seed round funding
  • Assembled the development team

Development Phase (2022-2023)

  • Smart contract development and audits
  • Multiple testnet iterations
  • Completed $14.5 million Series A (led by a16z)
  • Built operator and AVS ecosystem

Phase 1 Launch (June 2023)

  • EigenLayer mainnet officially launched
  • Supported LST restaking
  • TVL caps set to control risk
  • Quickly attracted billions of dollars in TVL

Rapid Growth (H2 2023-2024)

  • TVL caps raised multiple times
  • Launched native restaking functionality
  • EigenDA and first batch of AVSs went live
  • Completed $100 million Series B
  • TVL surpassed $10 billion

Token Launch (2024)

  • Announced EIGEN token economics
  • Airdrop plan and distribution scheme
  • AVS ecosystem rapidly expanded

Core Products

EigenLayer Protocol (Core)

Restaking infrastructure: - Accepts ETH and LST deposits - Manages restaking and delegation - Coordinates operators and AVSs - Handles slashing and disputes

EigenDA (Data Availability)

The first AVS built on EigenLayer: - Provides low-cost data availability for Rollups - Alternative to Ethereum blob space - Based on EigenLayer's validator network - Significantly reduces L2 costs

EigenPods

Smart contracts for native restaking: - Users restake directly at the consensus layer via EigenPods - Maintain Ethereum validator identity - Automatic reward claiming and slashing handling

How It Works

Restaking Flow

  1. Deposit: Users deposit ETH or LST into EigenLayer
  2. Select AVS: Choose which AVSs to provide security for
  3. Delegate (optional): Delegate to professional operators or run your own node
  4. Earn Rewards: Receive Ethereum staking rewards + AVS fees
  5. Bear Risk: If operators misbehave on an AVS, slashing may occur

AVS Integration Flow

  1. Define Specifications: AVS defines validation rules and slashing conditions
  2. Register: Register as an AVS on EigenLayer
  3. Attract Staking: Attract restakers by paying fees
  4. Validate Service: Operators perform validation tasks
  5. Distribute Rewards: Allocate earnings based on contributions

Economic Model

EIGEN Token

  • Token Functions:
  • Governance rights
  • Additional security staking layer
  • Protocol fee capture

  • AVS incentives

  • Distribution:

  • Community and ecosystem
  • Early contributors and investors
  • Team (long-term lockup)
  • Airdrop to early users

Revenue Sources

Restaker earnings include: - Ethereum staking rewards (approximately 3-4%) - AVS-paid fees (varies by service type) - EIGEN token incentives (if applicable) - Operators may receive a share of delegator earnings

Risk and Slashing

  • Different AVSs have different slashing conditions
  • Slashing ratios can stack (risk accumulates with multiple AVS participation)
  • Users need to assess risk-return ratios

Use Cases

1. Data Availability

EigenDA provides low-cost DA services for Rollups.

2. Cross-Chain Bridge Validation

Cross-chain bridges use the EigenLayer validator network for security.

3. Oracle Networks

Decentralized oracles rent EigenLayer's security.

4. Consensus Protocols

New blockchains or Layer 2s use EigenLayer as a consensus layer.

5. MEV Services

MEV relay and protection services validated through EigenLayer.

6. Decentralized Sequencers

Decentralized sequencer networks for Rollups.

AVS Ecosystem

Launched or Planned AVSs

  • EigenDA: Data availability layer
  • Espresso: Shared sequencer network
  • Hyperlane: Cross-chain messaging protocol
  • Witness Chain: Physical proof network
  • AltLayer: Rollup-as-a-Service
  • Omni Network: Cross-Rollup communication
  • Lagrange: Zero-knowledge co-processor

Risks and Challenges

1. Compound Slashing Risk

Participating in multiple AVSs may lead to stacked slashing risks.

2. Smart Contract Complexity

Multi-layered nested contracts increase potential vulnerability risks.

3. Systemic Risk

If a large amount of ETH is restaked, it may affect the base layer security of Ethereum.

4. Regulatory Uncertainty

Restaking may be viewed as securities or derivatives.

5. Centralization Concerns

A few large operators may control the majority of restaked assets.

6. Uneven AVS Quality

Low-quality or malicious AVSs may pose risks.

Competitors

  • Babylon: Bitcoin staking protocol
  • Symbiotic: Paradigm-backed restaking protocol
  • Karak: Multi-asset restaking platform
  • Picasso: Restaking in the Cosmos ecosystem

Best Practices

Restakers

  • Evaluate AVS risk and return
  • Diversify across multiple operators to reduce single-point risk
  • Avoid over-leveraging
  • Monitor slashing events and operator reputation
  • Participate in governance decisions

Operators

  • Choose AVSs within your capability
  • Maintain high availability and security
  • Charge reasonable commissions to attract delegation
  • Maintain transparency and community communication
  • Purchase insurance or establish risk buffers

AVS Developers

  • Design reasonable economic incentives
  • Clearly define slashing conditions and processes
  • Provide sufficient documentation and support
  • Build reputation and community trust
  • Continuously optimize and upgrade

Future Development

Short-Term Goals

  • Expand the AVS ecosystem
  • Optimize user experience and capital efficiency
  • Launch EIGEN token and governance
  • Strengthen security audits and insurance mechanisms

Long-Term Vision

  • Become the standardized rental layer for Ethereum security
  • Support hundreds of AVSs
  • Drive the development of modular blockchains
  • Deep integration with Layer 2s and Rollups
  • Explore cross-ecosystem (e.g., Bitcoin) restaking