OpenChain is now listed in the ISO database as:
ISO/IEC PRF 5230
https://www.iso.org/standard/81039.html

PRF means Proof of a new International Standard, and the next step is IS (International Standard).
https://en.wikipedia.org/wiki/International_Organization_for_Standardization

In other words, everything is done on their end, and hitting publish is all that remains.

Watch this space.