proof
The wallet can't hold an offered credential — it's bound to no key, or by a method other than jwk or cose_key — or the issuer takes no proof it can give: a key attestation needs a WalletProvider.
The wallet can't hold an offered credential — it's bound to no key, or by a method other than jwk or cose_key — or the issuer takes no proof it can give: a key attestation needs a WalletProvider.