EigenLayer
A middleware protocol on Ethereum that introduces restaking, allowing validators to secure other protocols with their staked ETH.
EigenLayer is a groundbreaking protocol within the Ethereum ecosystem, enabling a process known as restaking. This involves users reusing their already staked ETH to secure various decentralized applications (dApps) and services built on Ethereum. By restaking, users can potentially earn additional rewards on top of their initial staking rewards. The protocol introduces the concept of a shared security layer, allowing new applications to leverage the security of staked ETH without needing to build their own validator sets from scratch.
EigenLayer was developed to address the issue of fragmented security in the blockchain space. Many new applications require robust security but lack the resources to establish their own secure networks. Restaking provides a solution by allowing these applications to tap into the existing security of staked ETH. This can lead to increased innovation, as developers can focus on building their applications rather than securing them. It also provides stakers with opportunities for higher yields, but also introduces new risks.
The core mechanism of EigenLayer involves users delegating their staked ETH to actively validate these new applications. This process extends the utility of staked ETH, as it's no longer just securing the Ethereum network. The platform offers flexibility in terms of the types of applications that can be secured, from data availability layers to bridges. However, this also introduces risks, as the security of the restaked ETH is now tied to the performance and security of the applications it secures. EigenLayer's design is still evolving, and it's essential to understand the associated risks.
EigenLayer's functionality allows for the creation of new economic models and incentives within the Ethereum ecosystem. It enables applications to bootstrap their security, potentially lowering barriers to entry. However, users should carefully consider the risks involved, including the potential for slashing (loss of staked ETH) if the applications they're securing fail or are compromised. The protocol is constantly under development, and users should stay informed about the latest developments and security audits.
graph LR
Center["EigenLayer"]:::main
Pre_restaking["restaking"]:::pre --> Center
click Pre_restaking "/terms/restaking"
Pre_ethereum["ethereum"]:::pre --> Center
click Pre_ethereum "/terms/ethereum"
Pre_smart_contract["smart-contract"]:::pre --> Center
click Pre_smart_contract "/terms/smart-contract"
Rel_restaking["restaking"]:::related -.-> Center
click Rel_restaking "/terms/restaking"
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🧠 Knowledge Check
🧒 Explain Like I'm 5
EigenLayer is like a temp agency for [Ethereum](/en/terms/ethereum) security guards. It lets the guards (Validators) take on extra shifts protecting other businesses (AVSs) using the same uniform and badge (Staked ETH).
🤓 Expert Deep Dive
EigenLayer operates as a trust-minimized marketplace for decentralized trust, abstracting Ethereum's economic security. Its core innovation is restaking, which allows staked ETH (or LSTs) to be utilized as collateral for multiple Actively Validated Services (AVSs). This creates a composable security layer, enabling AVSs to achieve robust decentralization and security without native token issuance. The protocol defines a set of interfaces for AVSs to register and for operators (who run nodes for AVSs) to signal their intent to validate specific services using restaked capital. Economic security is maintained through a dual slashing mechanism: slashing on Ethereum for validator misbehavior and potential slashing within AVSs for protocol-specific failures, enforced via slashing modules integrated with EigenLayer. This introduces complex risk management for restakers, who face correlated risks across multiple services. EigenLayer's architecture facilitates permissionless innovation in decentralized infrastructure by lowering the barrier to entry for new protocols requiring economic security.