Version 4.3 of the DataCite Metadata Schema released during August, 2019 included (among other things), the capability to provide persistent identifiers for affiliated organizations in the metadata (Dasler and deSmaele, Identify your affiliation with Metadata Schema 4.
Cross-posted on the blogs of University of California (UC3), ORCID, and DataCite: https://doi.org/10.5438/67sj-4y05. Over the past couple of years, a group of organizations with a shared purpose—California Digital Library, Crossref, DataCite, and ORCID—invested our time and energy into launching the Org ID initiative, with the goal of defining requirements for an open, community-led organization identifier registry.