Coinbase is publishing its first children's book, and every copy comes with a code for $50 in bitcoin.

Coinbase is publishing its first children's book, and every copy comes with a code for $50 in bitcoin.

The book “If You Find A Penny” costs $21.01 and is available for pre-order in the US. To redeem the code, you need a Coinbase account, and codes expire on Jan. 31.