Storage location for base image layers

Hi,

when pushing an image, that was built on top of a base image, to a private/3rd party registry, will the base image layers also end up in the private/3rd party registry or are they kept as a remote reference to the original location of the base image?

In an commercial/legal context - am I “shipping/delivering” the contents of the base image, when making it accessible on my registry?

Best regards,
Matthias