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EigenLayer

1 min read
Pronunciation
[eye-gen-lay-er]
Analogy
EigenLayer is like renting out the security of your home to multiple neighbors—you provide collateral once but can back multiple applications with the same stake.
Definition
A protocol that enables Ethereum validators to restake their ETH to secure and provide cryptographic guarantees for new services, creating a marketplace for shared security.
Key Points Intro
EigenLayer’s restaking model offers:
Key Points

Restaking: ETH staked on Ethereum can be re‑delegated to other protocols.

Shared security: New networks leverage Ethereum’s economic security.

Slashing conditions: Misbehavior on any restaked service can slash the validator.

Composable services: Builders can deploy services without bootstrapping security.

Example
A decentralized oracle protocol uses EigenLayer restaked ETH to secure its data attestations, attracting validators already securing Ethereum.
Technical Deep Dive
Validators opt in via an on‑chain contract, locking a portion of their staked ETH as restaked collateral. EigenLayer issues tasks for attestation, data availability, or execution. Validator actions are monitored by restaking modules; misreports trigger slashing across both Ethereum and EigenLayer contracts.
Security Warning
Restaking multiplies slashing risk—errors or attacks on one service can slash your ETH staked on Ethereum.
Caveat
Economic security guarantees depend on aggregate participation; low uptake can weaken protection.
Related Terms
Restaking
Slashing

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