V2 Tags API - Different URLs

Is this URL different for private registry when compared with that of registry.hub.docker.com ?

For registry.hub.docker.com, For example, I need to do this:

If I want to do something similar on my private registry, I have do the following

Note the difference - tags/list instead of tags

Also the json schema in the output too is different

am I right or making something wrong.

As per the documentation, /tags/list is right. But doesn’t work on registry.hub.docker.com