DID method-agnostic Domain Linkage

[nanderstabel]

Description

Currently, Domain Linkage only works for the DID Web method. However, it is necessary to extend this functionality to include the did:iota method (and related DID methods). When Domain Linkage is enabled (domain_linkage_enabled: true), the following requirements must be met for all non-deterministic DID methods (excluding DID JWK and DID Key):

1. A linked DID must be added to the /.well-known/did_configuration.json resource.
2. A LinkedDomains service must be added to the corresponding DID Document.

Motivation

This will ensure that Wallets that do not support DID Web (but do support DID IOTA) can also validate UniCore's Domain Linkage

Resources

https://identity.foundation/specs/did-configuration/

To-do List

• DID method-agnostic Domain Linkage