ELI5: 什么是Restaking

EigenLayer has pioneered a new mechanism in cryptoeconomic security, the restaking primitive, to overcome these challenges and aggregate security across the Ethereum network. Restaking functions as a set of smart contracts in which users that stake $ETH can repurpose their locked $ETH to extend cryptoeconomic security to other applications built on the network. That is, EigenLayer enables a system of rehypothecation for staked $ETH. The protocol creates an opt-in middle layer where users agree to grant EigenLayer additional enforcement rights on their staked $ETH, enabling it to be effectively restaked on to other applications. An important aspect of EigenLayer's opt-in feature is that it creates additional slashing conditions on staked $ETH that persist above the consensus layer. This helps to facilitate extensible security as new slashing conditions can be introduced to meet the demands of other projects such as bridges and data availability layers being built on top of Ethereum. So EigenLayer can freely deploy restaked $ETH to additional applications while leveraging slashing conditions to enforce honest behavior and disincentivize malicious behavior. Ultimately, EigenLayer's design allows staked $ETH to provide validation services beyond just Ethereum itself.

https://consensys.io/blog/eigenlayer-a-restaking-primitive