As a (relatively) early adopted, the new price pump is making me feel generous... Who is smart enough to tell me what is wrong with this book cover? 0.5 BTC reward for the right answer.

"Mastering Bitcoin" by Andreas Antonopolous

http://www.amazon.com/gp/product/1449374042/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1449374042&linkCode=as2&tag=hocayoli-20&linkId=KRGAK7LJ7OSGJGN3