ODBL license has a clear requirement > notice associated with the Produced Work reasonably calculated to make any Person that uses, views, accesses, interacts

ODBL license has a clear requirement > notice associated with the Produced Work reasonably calculated to make any Person that uses, views, accesses, interacts with, or is otherwise exposed to the Produced Work aware that Content was obtained from the Database Hiding "attribution" in places where typical user will never visit (for example in menus hidden inside barely visible "i" symbol) clearly violates it.