What is the worlds bounciest ball?

The highest a Basketball has ever bounced during a game was about 478.89 feet on an outdoor court in Pembroke,Ontario (Canada). It happened when Micheal Minns was running the court, bounced it off the concrete and the ball was gone. About 52 seconds later the ball bounced again and Minns jumped 13.81 feet (His above hand) and dunked it for the game winning point of the EOFFSA Championship