In a world with an increasing number of online services, digital identities become more and more important. Even in eGovernment, where public services are offered electronically play are digital identities vital. In order to have a digital ID as the full counterpart of a physical ID, the digital ID would have to support offline authentication. In particular, the authenticity and validity of the authentication data have to be able to be verified in a fully offline setting, where neither the prover nor the verifier has an established internet connection. This work proposes a first concept aiming offline verifiable self-sovereign identities.