Actually, I ma following you for quite long ago. I am happy that you keep up posting here. I've been writing and thinking about the "Proof of Brain" concept, just as you. Some post I think you would like to read: Steemit Friction and this one (on Publish0x) Voting-bots Threatens Proof of Brain Reward System . Hope you enjoy the read. By the way, any thoughts about 0x platform?