  Supply chain traceability systems have become central in many industries,
however, traceability data is often commercially sensitive, and firms seek to
keep it confidential to protect their competitive advantage. This is at odds
with calls for greater transparency in supply chains for sustainability and
efficiency. In this research paper, we develop a solution to this conflict. We
demonstrate that sanitised data can be used to confirm the authenticity of
products and anonymously verify the rights of an actor to access detailed
traceability data. Following a design science methodology, we develop a
prototype protocol and verify its performance with traceability data based on
the global standard EPCIS.
