Seeking Clarification on Section F3

[zoghbi-a]

Section F3 states that:

It is a reminder to curators that the globally unique, persistent identifier *must *be propagated to the metadata for the target data itself, not merely cataloged in an institutional database.

• Does that imply the DOI needs to be included in the data files themselves (e.g. header in a fits file)?

• What happens to a file that is associated with multiple DOIs. For example, an image file from a telescope observation can have a DOI that points to it as a data product, but that image file is also part of an observation that have its own DOI.