Summary
Following DSR, the authors derive eight design objectives and design, implement and evaluate an SSI-based identity management system for certifying retailer tax attributes, deriving four nascent design principles for SSI applications concerning role multiplicity, credential reuse, holder-as-controller, and public DIDs for issuers only.
Artifact
A self-sovereign identity (SSI) system presenting tax attributes of online retailers.
Methodology
Design science research; workshops; prototype implemented by an IT service provider; eight expert interviews.