Workshop Notes: SIWE->CACAO->UCAN

[wyc]

Background (JT: @oed, BZ: , B, WC: @wyc)

• Sign-In with Ethereum fields can be fully represented as Chain Agnostic Capability Objects (CACAOs).
• UCANs are JWTs

@oed: Can we harmonize the way we represent the structure in IPLD?
Boris: UCANs are broader than blockchain, we want to represent all types of capabilities. We want adoption and interoperability.

BZ goes over delegation.

• Today, the parent capabilities assume that CIDs listed are also UCANs.
• We could use the extension data to contain the interpretation rules for SIWE-CACAO.
• The attenuations are one per resource, with delegated session key in the aud.