7. Supported Credential Formats and -Exchange Protocols, Wallets and DID¶

7.1 DID Methods¶

	did:web	did:ebsi	did:elsi	did:key	did:keri	did:op
Tagus	X
Loire	X
Danube	X [1]	via extension [2]	via extension [2]	X [1]	via extension [2]	via extension [2]

Note

The did method is directly supported by the Gaia-X Basic Functions component of the Danube Gaia-X Core Engine.
The did method may be directly supported by a suitable extension of the Gaia-X Core Engine.

In the table, the following did methods are mentioned:

did:ebsi (European Blockchain Services Infrastructure; now the Europeum EDIC)
did:elsi (linked to eIDAS)
did:key (equivalent to allowing completely anonymous participants)
did:keri (GLEIF)
did:op (Ocean Protocol) or other DLT-based methods

7.2 Credential Formats¶

	jws2020	vc-jwt
Tagus	X
Loire		X
Danube		X

where: - jws2020: JSON Web Signature 2020 - vc-jwt: Verifiable Credential as JSON Web Token as specified in Securing Verifiable Credentials using JOSE and COSE

7.3 Credential Exchange Protocols¶

	VC-API	OpenID
Tagus	X
Loire	X	X
Danube	X	X

where:

OpenID: Open ID Connect
DIDComm: Decentralized Communication
Eclipse DCP: Eclipse Decentralized Claims Protocol
VC-API: Verifiable Credential API
CHAPI: Credential Handler API
WACI: Wallet and Credential Interactions

Note

Regarding Danube, these DID Methods, Credential Formats and Credential Exchange will only be in the initial implementation, more formats and protocols might be supported by external extensions.