Digital Product Passport Management with Decentralised Identifiers and Verifiable Credentials

TL;DR

The ESPR requirements are analyzed and how they may be achieved using DIDs and VCs are described, assessing their performance in some scenarios.

Abstract

Digital product passports (DPP) have been proposed in the European Ecodesign for Sustainable Products Regulation (ESPR) as a means to keep and provide product information that facilitates product reusage, reparation, and recycling. Thus, DPPs should provide a positive effect on the environmental impact of future manufactured products, preventing waste and promoting a circular economy (CE) model. ESPR settles a set of requirements in collecting and administering product-related data. Decentralised identifiers (DID) and verifiable credentials (VC) are two self-sovereign-identity-related elements that may help in that DPP management since they introduce a decentralised administration of identity that may enhance the overall scalability of the resulting system, improving also its reliability. This paper analyses the ESPR requirements and describes how they may be achieved using DIDs and VCs, assessing their performance in some scenarios.

Figures (8)

• Figure 1: Composition of DPP information from its components and the selective disclosure of specific credentials from the owner to the verifier.
• Figure 2: Basic components of a DID architecture Sporn22.
• Figure 3: Roles and data flows in VC-based interactions Sporn22b.
• Figure 4: Sequence diagram in VC-based interactions.
• Figure 5: Design options in P08.1.