The New York Times has claimed that the identity of Satoshi Nakamoto, the creator of Bitcoin, has been a mystery since the cryptocurrency launched in 2009. The author of "Bad Blood," John Carreyrou, author of the bestselling exposé on Theranos, has argued that Satoshi is actually Adam Back, a British cryptographer and prominent Bitcoin figure. His suspicions were first sparked by watching the HBO documentary Money Electric: The Bitcoin Mystery. Carryrou spent years searching for ties between Back and Satoshi, discovering that Satoshi cited Back and Hashcash, a statistical puzzle-solving system Back invented in Bitcoin’s original white paper, as well as other similarities between them. He also found that Back had described an electronic cash system similar to Bitcoin in a series of posts on the Cypherpunks mailing list between 1997 and 1999. Despite these similarities, Back maintains that he is not Satoshi and that the similarities are coincidental.