$ hubCheck -settings -level=base -version=v1
$ hubCheck -settings -level=base -version=v2
The purpose of the "base" level settings is to try to capture what settings on the page that are likely to be common and supported by other sites that support Track Hubs. The full list of setting levels are "required", "base", "deprecated", "full", and "new". All the "new" settings in v1 were promoted to the status "full" in v2. No setting was deprecated.
All the best,