Sheffield is the CEO and Co-founder of Coinsource, the world’s leading provider in Bitcoin ATMs. Founded in 2015, the Texas-based Bitcoin ATM provider offers seamless access to the world’s most recognisable digital currency to millions of Americans at physical kiosks. Before founding Coinsource, Clark started a business called Fuel Stop Media, a unique digital advertising company promoting goods and services at gas stations via high definition video, text and imagery. This company kicked off in Little Rock, Arkansas, and grew to become the largest gas pump advertising network in the state. By forging strong local partnerships and providing a compelling platform by which advertisers and brands could effectively market their products and services, he expanded into the surrounding states of Florida, Kentucky, Tennessee, and Mississippi, independently earning partnership deals with local Fox, NBC and CBS television networks. Clark graduated from University of Central Arkansas in 2009, majoring in History and double minoring in Business Administration and Psychology.