UCAN: User Controlled Authorization Networks


A trustless, secure, local-first, user-originated authorization and revocation scheme.

UCANs are an authorization protocol for local-first apps and distributed systems. They make passwordless interop between apps trustless & simple—like OAuth but small, light and decentralized.

Initially drafted by us, they’ve since been baked in to Web3.Storage, Bluesky and our very own ODD SDK. The UCAN Working Group is quickly working towards a 1.0 Spec in 2023.

Decentralized Identity


Here are all the other parts of the Fission ecosystem connects to it.

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