DataSpace Institutional Repository — OAI-PMH
DataSpace is Princeton's older DSpace-based institutional repository for theses, dissertations and archived research output, with an OAI-PMH metadata-harvesting endpoint and content migrating to Princeton Data Commons. Registered with DataCite as client pu.dataspace, which has minted 399 DOIs under the 10.34770 prefix. The host CNAMEs to dataspace.pulcloud.io — pulcloud.io is Princeton University Library's own Google Cloud estate, documented throughout pulibrary/princeton_ansible — so this is Princeton infrastructure running open-source software, not a hosted vendor tenancy. Every request currently returns 401 from Princeton's in-house ALTCHA proof-of-work bot challenge (pulibrary/altcha_rust_server); that is a client-verification gate, not authentication, and the June 2026 profile of this repo recorded it wrongly.