I do not know how this process works. Do I have to wait until it is closed to submit new coins with photos? I will plan to put a link to the NGC permission on the reference portion of any submissions.
An admin like Jarcek has to see this thread, be convinced that the linked forum post is sufficient to allow everybody to use NGC material, then it gets added to the list of verified sources.
As much as I would like to have NGC added to the list of “partners who shared their pictures with Numista” I don't think that's what NGC is allowing. I think they are only allowing the use of pictures they took of slabbed coins owned by the person posting the pictures. Maybe (hopefully) I'm wrong.
I don't think that this is a free for all too, that's why I phrased it the way I did. But we could tease them that PCGS allows it, and we only advertise their links 😜.