This document discusses challenges with current traceability systems and outlines a role playing exercise to demonstrate the value of digital product passports (DPPs). It summarizes key insights from the exercise, including that not all actors are willing to share truthful data, it is difficult to verify supply chain data across companies, and misaligned incentives can exist. The document then introduces a DPP solution called Circularise that uses blockchain and adaptive disclosure techniques to maintain privacy while enhancing traceability.