01609nas a2200157   4500000000100000008004100001260005100042100001600093700001800109700001800127700002000145245009100165856004900256520112200305020002401427       2026                            d  c04/2026b"Springer Nature Switzerland"a"Cham"1 aJavier Cano1 aPedro Vilchez1 aFelix Freitag1 aLeandro Navarro00aDecentralised Search and Discovery of Digital Product Passports for Circular ICT Goods  uhttps://doi.org/10.1007/978-3-032-05748-8_173 a"The Digital Product Passport (DPP) is an emergent information system that will support conducting circular economy practices with information about a product s hardware changes along its lifecycle. Diverse circular economy actors will add and use information to a product s DPP. Actors include product manufacturers, and we explore how value chain operators, including repairers, refurbishers, and recyclers, can also update it, keeping updated product hardware information available to end users. This paper focuses on a distributed search and lookup service for DPPs. We have designed and prototyped this distributed search service within a DPP system for circular ICT goods. We show that the search service allows end users to find DPPs and validate the obtained information and actors involved in terms of integrity and authenticity. Our prototype is built with a set of microservices, where a verifiable data registry implemented with a DLT provides a shared source of truth and chain of trust for the different events and actors that modify the DPP information of a product item during the product s lifetime."  a"978-3-032-05748-8"