A portion of book sales will go in the bitcoin wallet. The public wallet and balance can be viewed here

https://bitref.com/bc1q4p4qhpz7qhzfu8qxal62azg0rv7gjun7skpmrt

You can donate to the wallet but DO NOT do it on that page as that is a donation to the website NOT the wallet. 

Hlaf the bitcoin wallet password is in the chest and the other half is with the steward who will give it to you when you verify you have the chest. The finder has 30 days to contact the Steward or the bitcoin wallet is forfeited.