Restaking is a proof-of-stake (PoS) mechanism that lets users or validators reuse tokens they have already staked on a base network to provide security for other protocols. Instead of your stake only backing one chain’s consensus, the same staked collateral can be extended to support additional services, typically in exchange for extra rewards.
How restaking works
In a standard PoS setup, staked tokens help secure the network by aligning validator incentives, honest behavior earns rewards, and misbehavior can trigger slashing. Restaking builds on that model by “exporting” the economic security of an existing stake to other systems. These systems can include sidechains, data availability layers, bridges, or other on-chain services that want strong security without bootstrapping their own validator set and token.
A common real-world example is restaking built around staked ETH, where a restaking protocol allows participants to opt into securing additional “actively validated services.” Validators may run extra software and agree to additional rules. If they break those rules, penalties can be enforced, depending on the design.
Benefits and risks for participants
Restaking is often described as capital efficiency, because one pool of collateral can secure multiple networks. For stakers, it can mean additional yield streams on top of base staking rewards. For new protocols, it can reduce the time and cost needed to achieve credible security.
However, restaking adds layered risk. Participants may face additional slashing conditions, smart contract vulnerabilities in restaking middleware, and correlated failures where issues in one service impact the same collateral backing others. The more obligations your stake supports, the more complex operational requirements and risk management become.
Restaking matters because it can reshape how security is provisioned across crypto, making it easier for new networks and services to launch, while concentrating risk if reused collateral is not carefully managed.