The specification
https://eris.codeberg.page/spec/#name-introduction was mentioned on the plan 9 mailing list
https://marc.info/?l=9fans&m=176805933123451&w=2.
ERIS allows you to make content available robustly over computer networks by using identifiers that are location independent and network-optimized. It can be used as a building block for decentralized and fault-tolerant applications, some examples being:
- file-sharing
- de-duplication of content
- reproducible and deterministic identifiers of content
ERIS is a network optimized form of content-addressing.