That explanation of how proof of brain works was helpful @exyle.
I like the idea of buying some cards but can't seem me getting into playing games with them. Given how these things usually work, might there be some value in getting some and holding them or is the value usually in the games themselves?
The value for me is in the fun of collecting the cards and later playing the game. I'm exciting about it and I want to be part of it from the start. I have no profit in mind, just fun.