Jun 2020 *
Now, it's being said there isn't enough evidence to claim he cheated. I thought it was confirmed he used emulators instead of real hardware.
https://www.pcgamer.com/billy-mitchells-pac-man-and-donkey-kong-guinness-world-records-reinstated/
https://www.pcgamer.com/billy-mitchells-pac-man-and-donkey-kong-guinness-world-records-reinstated/