Peer storage is an optional service where a node accepts a small amount of frequently-updated encrypted data from its peers (especially channel counterparties). It provides the latest version of that data back to the peer upon request, such as connection reestablishment. The data can be a backup of the peer’s latest channel state, allowing them to resume using a channel even if they lost their local state.
This topic description is a stub. We would welcome a pull request providing more background information about the topic.
Primary code and documentation
Optech newsletter and website mentions
- Fraud proofs for outdated state compared to peer storage backups
- Core Lightning #5361 adds experimental support for peer storage backups