UCAN

Abstract

User Controlled Authorization Networks (UCANs) are decentralized, capabilities model authorization tokens.

UCAN is a trustless, secure, local-first, user-originated authorization and revocation scheme. UCAN is designed to be very flexible: you can use it offline, online, fully P2P, federated, or with central servers.

Resources

UCAN Distributed Auth
Auth tokens for a distributed, user-controlled world
https://ucan.xyz/
UCAN: Authorizing Users Without a Back End – Fission
User Controlled Authorization Networks (UCANs) are a way of doing authorization ("what you can do") where users are fully in control.
https://fission.codes/blog/auth-without-backend/