feat: Would be nice if there was a way for the Wallet app to have custom credential icons

[bkreiser]

Is your feature request related to a problem? Please describe.

No response

Describe the solution you'd like

I think that it would be nice to customize the credential cards in the wallet application to have an image reflecting the issuer or type of credential that was issued. Perhaps this could be part of the Schema or of the ACDC and if some attribute existed which had an image then it would use it

Describe alternatives you've considered

No response

Additional context

[iFergal]

Agreed. We have had this in the past for certain credentials for demo purposes but we need a long term solution for arbitrary use cases, and I haven't fully thought about it yet.

The only issue with embedding it into the schema is the schema then becomes opinionated on what wallets it should be held in since the graphic would be designed for our wallet. That would at least be better than embedding it as an attribute of the ACDC though because it would be strange to possibly have different images for different ACDCs with the same schema.

In Cardano, CF manages the token registry as a Github repository but I find this problematic as it's not only a source of centralization but also an overhead on CF.

I'm not sure if the following is possible in the schemas:

1. Define a metadata manager identifier/AID in the schema itself.
   a. This creates a cryptographic commitment in the schema to a controlling identifier.
2. The metadata manager could host a web API which is discoverable via the OOBI and follows KAPI (we'd need to extend KAPI).
3. Now assets can be updated on this web API, and maybe could support different assets for different well-known wallets etc.

The chain could also provide a secondary discovery mechanism. We're going to be done this for schemas - they are discovered by the issuer's web APIs, but if that fails may be found on-chain.

Just some initial thoughts.