The FREYA team has taken forward a conversation that has been developing over several years amongst persistent identifier (PID) users and providers: the idea that these critical research information infrastructures could be better supported by a coordinated community. A ‘federation’ of PID providers and users, spanning other research infrastructures, funders and policy makers, and the wide research community was mooted in January 2020. A project was commissioned to scope this potential ‘PID Federation’, undertaken between June and September 2020. This report outlines that project and summarises its key recommendations.