The ConfIDent platform, which emerged from a DFG project, provides long-term information about scientific events. The goal is to enable quality-oriented, collaborative curation of semantically structured metadata of scientific events. PIDs play a central role in this process. For example, the project registered the first DOI for a scientific event and its series in June 2021. The metadata schema underlying ConfIDent was developed in coordination with DataCite and builds on the preliminary work of the international working group PIDs for Conferences & Projects initiated by Crossref and DataCite.