Thanks @bquinn - this looks fairly straightforward

On "author" / "creator", I think they are effectively synonyms except that it is conventional to use the word "creator" for media objects and "author" for primarily textual creations. We can clarify this. Dublin Core started out with "author" and moved to "creator" after a workshop on images, I believe.

The Type would also be important here, not only for still photographs, but for all creative works.

1. Creative Commons types supported?
2. Is Fair Use encouraged? (news clips, video snippets, etc)
3. In music, it is very difficult to determine if it is okay for independent artists to cover songs in music videos. On YouTube the "Sync" rights are presumed unless the copyright owner flags the video. It would be very good to know if sync rights are denied before expending the effort to cover and produce the song / and video offering.

Thanks for your comment @WeaverStever.

Creative Commons licences can already be specified using the http://schema.org/license property on CreativeWork - see https://developers.google.com/search/docs/data-types/image-license-metadata#structured-data for more info on how Google will soon use that info to display some licence information on search results pages for images.

For a Creative Commons work, the copyrightNotice property could contain something like "Copyright 2020 Barbara Smith. Some Rights Reserved" (see https://creativecommons.org/faq/#what-does-some-rights-reserved-mean), or "Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution 4.0 International license."

Regarding your second point, I don't think the copyright owner asserting whether fair use is encouraged or not changes the legal status of the work or of any derived work. Do you have an example where this is used in practice?

Re your third point, schema.org has recently introduced a new property on CreativeWork, https://schema.org/acquireLicensePage, which was intended to be used for requesting image reuse licences but happily it should also work well for the case of requesting a synchronisation licence for a piece of music. For musicians that refuse sync licences, they could put a message on their acquireLicensePage that says so. Otherwise this URL could point to the creator's instructions for how to obtain a sync licence.

@bquinn
Thanks for the link to acquireLicensePage. I'm seeing that https://schema.org/usageInfo seems related.

My point is that there are two perspectives to consider, one is the from the organization asserting the copyright/conditions, the other is from the consumer complying with those conditions.

As for my second point, content experts may borrow a clip from a mainstream news outlet and create a derived creative work. Regardless to the law, YouTube and Facebook will take down the new work if any DMCA claim is made against it -- bogus or not. If the original work has Fair Use and terms declared, the platform can be assured that the copyright claim is not authentic and move on.

Another issue comes to mind, photographers will often license their work to a media outlet; however, that license will often have a begin and end date.

Hi @danbri, is there anything else you need from us before finalising this?

We are happy with creditText if you're worried about misinterpretation of creditLine.

Hi @danbri -- just wanting to ask if there are any additional decisions finalized here :-) Assuming that @bquinn is correct on the schema:copyrightNotice for the matching iptc field...and also, had you thought more about CreditText or CreditLine for addtional credit(s) from the iptc:creditLine?

let's go with creditText rather than creditLine then.

I'll draft up something for v11.0 and we can work through the details.

As for author vs creator, Dublin Core ended up using creator after considering images, I believe.

We have both, we say they are equivalent in English - do we want to go further and say that for any x and y related by author they are also related by creator (and vice-versa), i.e. implying e.g. that images and other non-textual creative works are authored?

I've made a pass at adding something based on these definitions, with the wording softened somewhat to avoid sounding overly contractual. See commitlog above.

This was deployed in yesterday's release, so I'll close the issue. Thanks @danbri and all for launching it!