WNFS as fully self-authorized data structure #13
Description
Summary
WNFS contains all information to validate all writes contained in it relative to the owner's root DID.
Problem / Need / Opportunity
There is an opportunity to use peers that replicate WNFS for persistence and availability ("super-peers") also for broadcasting changes to WNFS. However, this requires them to prove to peers that the WNFS they store only contains valid writes. For this, they need to know about UCANs and WNFS-as-a-protocol.
Although these peers should already do this type of checking when accepting changes, we can make it easier for them by making WNFS self-authorizing. Thus, super-peers would only verify the authority of incoming changes, and after checking them - they'd just re-broadcast these changes without additional overhead.
Success Scenario
Peers can determine the validity of all writes in a WNFS given only the file system itself and the owner's root DID. Super-peers just check new roots to broadcast.