Sorry for my ignorance but if you successfully receive a authTicket following a getAuthTicketForWebApi does this confirm the user owns/purchased the app? and how is this related to steam's 'CheckAppOwnership' API?
Also, with family sharing if a different family member owns the app will that family member successfully return a authTicket?
Finally if a 'Get auth ticket for web API' fails to be obtained, does this definitely imply the owner or family do not own the app or could there be other reasons for such a fail?
Thanks.