Towards a reference architecture for digital product passports in engineering Trienens, Malte Wyrwich, Fabian Schörder, Luca Hovemann, Aschot Dumitrescu, Roman <jats:title>ABSTRACT:</jats:title> <jats:p>Digital product passports (DPP) are intended to provide reliable, interoperable information throughout the product lifecycle, enabling compliance, transparency, and circularity. This paper seeks to address the question of how a DPP can be effectively implemented in the field of engineering, developing a referenced, industry-independent architecture for this purpose. The layers for data, communication, logical architecture, functions, and potential are derived from regulation and practice; integration, interoperability, and validation requirements are discussed using a use case.</jats:p> Cambridge University Press (CUP) 2026 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_6501 https://ris.uni-paderborn.de/record/67377 Trienens M, Wyrwich F, Schörder L, Hovemann A, Dumitrescu R. Towards a reference architecture for digital product passports in engineering. <i>Proceedings of the Design Society</i>. 2026;6:1601-1610. doi:<a href="https://doi.org/10.1017/pds.2026.10518">10.1017/pds.2026.10518</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1017/pds.2026.10518 info:eu-repo/semantics/altIdentifier/issn/2732-527X info:eu-repo/semantics/closedAccess