This case study is part of a series that has been produced within the study on “Risks and Trust in pursuit of a well-functioning PID infrastructure for research” commissioned by the Knowledge Exchange in July 2021. The main outcome of this work will be a report examining the current PID landscape with an emphasis on its risks and trust-related issues. This initial case study aims to explore the key role research funders are expected to play in the gradual adoption of an ever wider range of PIDs across European countries. The study examines matters such as the endorsement of PIDs by research funders and opportunities for cross-funder collaboration. In addition it looks at the potential differences in the technical workflows for PID adoption among others. The report, Building the Plane as We Fly It: the promise of Persistent Identifiers, and remaining complementary case studies have now been published.