Key Speakers at the Shape the Future Blockchain Global Summit

John McAfee, founder of McAfee Associates Inc. and chief cybersecurity visionary at MGT Capital Investments Inc., walks on stage to speak at the Shape the Future: Blockchain Global Summit in Hong Kong, China, on Wednesday, Sept. 20, 2017. Bitcoin captivated the attention of financial markets this summer as the developer community embraced a new mechanism to improve usage and avoided what was labeled as a potential civil war, raising the profile of the digital ledger and fueling the speculative price rise. Photographer: Anthony Kwan/Bloomberg via Getty Images