As part of my research into Data Flow in Personal Data Spaces, I came up with an “Inter-Pod Credential Exchange Protocol” via Solid and LDN.
Basically we have different data stores (Pods) in Solid, and we want to exchange verifiable credentials (VC) between them. So I propose to use the existing LDN spec as application-level protocol in combination with DIDComm Messaging Headers, as they can be easily extended.
To demo it, we mimic a common Self-Sovereign Identity flow, where party A issues a credential to party B, and party B sends it to party C to have it verified.
The code can be found at Github, and the paper is in the ESWC24 SDS workshop proceedings.