This market will resolve to "Yes" if MicroStrategy announces a purchase of more Bitcoin than the number specified in the title between the dates in the title (from 12:00 AM ET on the first date to 11:59 PM ET on the last date). Otherwise, this market will resolve to "No".
This market will resolve based on announcements made within the market's designated time frame regardless of when the actual purchases were made.
The resolution source for this market will be official information from MicroStrategy or Michael Saylor.
For reference, MicroStrategy's reported BTC holdings can be tracked at:
https://www.strategy.com/purchases