Oh how I wish to share all the possible proof here but this will cause both our privacy so I will leave to you guys if you will believe it or not. I will not try to prove further the validity of my coworker story because I respect his privacy and we are all anonymous here so we don’t need to prove anything to anyone here for just sharing an experience story.

Just a question, if your co-worker consulted you before he sold his BTC, what would you suggest to him. We know being active in this forum we have the mentality that Bitcoin will surge in the following years, would you tell him to hodl and sell his bitcoin in later years or you just let him be with his decision?
Anyway, I am happy that your colleague earns a life-changing profit on his investment I hope he will spend the money wisely.