Dear all,
Following earlier discussion and input (see https://groups.google.com/g/oai-pmh/c/b11cH343bIo) I discontinued the OAI-PMH Data Provider provider registration service. I recommend use of appropriate alternative registries including:
ROAR (Registry of Open Access Repositories, https://roar.eprints.org/)
OpenDOAR (Directory of Open Access Repositories, https://opendoar.ac.uk/)
re3data (Registry of Research Data Repositories, https://www.re3data.org/)
FAIRSharing (https://fairsharing.org/)
The OAI-PMH Data Provider VALIDATION service on the Open Archives website remains available at https://www.openarchives.org/Register/ValidateSite . I still have some work to do to tidy links and references but will do that as time allows.
Cheers,
Simeon