A consistent way to reference Rights on a subclass of CreativeWork is not specified at this time. #31
Description
Please see #29 (comment) for context.
The gist is that a type of CreativeWork, for instance a MusicRecording might need to reference the associated rights for various purposes. A realistic example is in the instance of paying for a MusicRecording it is convenient to reference the rights as an array property on the MusicRecording object. This enables the frontend of an application to retrieve JSON data for the object, key into the percentageShares prop and combine the values in the rights array to split the payments.
An idiomatic way of creating this reference is not currently designed in the spec though so application developers might come up with adhoc solutions that fit outside the spec. Additionally, having a rights array on CreativeWork objects does not adhere to the type properties in schema.org. We should have a consistent way of referencing rights via CreativeWorks that is defined within the spec, but also allow for the flexibility for application developers to serialize this in a convenient way