The spec does not yet provide guidance on nesting, which could pose an issue during validation.

Consider a credential representing a CredentialSchema2023. That credential could have a credentialSchema property where the type is also CredentialSchema2023, and so on, and so on... This could lead to an endless validation loop.

I propose adding language to specify that when using CredentialSchema2023 the associated VC must not have a credentialSchema property.