OIDC defines the address claim’s country field as “Country name component.“
We see the need to use an ISO country code instead of a name (like we do for place_of_birth”), e.g. for multi language support. and use the address claim this way. However, this does not match the OIDC definition.
I think the best way would be to define a new address claim suiting the needs of eKYC, e.g. postal_address.