My company has been eagerly following the development of specifications for both verifiable credential issuance and presentation. We have implemented playground software in which we enable testing with user-supplied data to construct somewhat realistic credentials. In this session I will walk through how my team as implementers have experienced the draft process of OpenID specs, ISO specs and the EU reference framework.

To get a structured feedback, I present the qualitative results of interviews with engineers who have spent the last three years implementing and testing these standards. The goals of the interviews is to get deeper insight into the following items: lessons learned, implementation challenges and reflections about data formats. Feedbacks include real-world experiences from deploying specs at customer's sites in Norway.