David Schwartz is the Chief Technology Officer at Ripple and one of the original architects of the XRP Ledger. Prior to joining Ripple, he was the Chief Technical Officer for WebMaster Incorporated, a Santa Clara software developer. He developed encrypted cloud storage and enterprise messaging systems for organizations such as CNN and the National Security Agency (NSA). He is widely known as "JoelKatz" and is a respected voice in the digital currency community.