1.0.0 Release

Date: 2022-08-31

Ontology File(s)


Release Notes

UCO 1.0.0 incorporates required refinements and updates to provide a stable version for adopters to use. Following SemVer, additive improvements will continue to be accepted, but backwards-incompatible changes will be scheduled only for the 2.0.0 release, which will come after at least 6 months to possibly 12 months.

Breaking Changes

(These are changes to ontologies, classes or properties in the preexisting ontology that make the new release non-backward-compatible.)


(These are general changes to the preexisting ontology that are not breaking or range changes.)

Bug Fixes

(These are bugs found within the preexisting ontology that have been fixed.)

Known issues


Generated documentation is available at this site:


Be aware that the documentation at that site will only show the most recent release. The upper-left corner of the documentation pages shows the ontology version being reviewed.

After the following UCO release, users interested seeing the rendered documentation at this version “Back in time” should locally clone the repository, check out this branch, and follow the deployment directions in CONTRIBUTE.md.