Can you explain the purpose of BAT? I mean, I understand the philosophy and purpose of the project but I don't understand what the purpose of the coin is. Is this project Proof of Stake? Does this mean the ad revenue is distributed as BAT among the BAT holders?
The Brave browser will implement the BAT Wallet soon. this will store the BAT you earn or purchase. The amount of BAT you can earn is based on BAM or Basic Attention Metric, it provides insight in to how and when and for how long a person was exposed to the ad. Also publishers (websites) can offer a ad free experience for which they can be rewarded by their users though BAT.