In this article for Waters Technology magazine, Paul Chou explains the blockchain battle. Paul L. Chou has a rare combination of capital markets knowledge and hands-on experience with the new asset class, bitcoin. Paul began his career at Goldman Sachs managing algorithmic trading strategies and after a move to the west coast began working with bitcoin and blockchain in 2011. Now as CEO of LedgerX, he is on a mission to build the first regulated exchange and clearing house for bitcoin options.