The Super Mario 64 A Button Challenge asks the question: What is the minimum number of A presses required to beat Super Mario 64 with 100% completion?

There are currently 15 remaining A presses for 100% completion. The source for this is actually somewhat tribal; the most recent reliable reference to this fact is at this timestamp of a video by Bismuth: 

This market resolves YES if on January 1, 2024, at 12am, the consensus among Super Mario 64 A Button Challenge experts is that exactly 15 A presses are currently required for 100% completion.

 Otherwise it resolves NO (which will occur only if the number is 14 or fewer.)