Since its invention in 2010, bitcoin has been at the forefront of the emergence of cryptocurrency into public consciousness. But its alleged inventor remains unknown—the person (or persons) who penned the first white paper and created the first implementation used a pseudonym, never revealing themselves. Known as Satoshi Nakamoto, a number of people have attempted to identify the creator. Theories range from a California engineer to an Australian computer scientist. This article lays out the history, potential suspects, and lasting legacy of the yet-unknown inventor.