1 POSTSRay Xiao is Co-Founder of IOST. IOST is an application-friendly, next-generation public blockchain infrastructure, helping decentralized app developers overcome some of the most challenging problems with mass adoption. First and foremost, IOST solves the scalability trilemma, or having to select between levels of security, scalability, and decentralization. Through a “Proof-of-Believability” consensus mechanism, IOST enables DApps to build and deploy more meaningful services on its platform, helping more everyday users experience the mass benefits of blockchain services. IOST has a global presence, with offices in Beijing, Tokyo, Seoul, Berlin, San Francisco, New York, and Singapore.