Polotsky launched CoinFlip from his Bobb Hall dorm room in 2015. Since then, the company has grown at a massive rate and now has almost 200 employees, including eight fellow Northwestern grads, and a new 44,000-square-foot headquarters opening in downtown Chicago's Old Main Post Office building. Plus, Polotsky and his team have accomplished all this without taking any outside investment.

CoinFlip's ATMs allow customers to buy and sell Bitcoin, or any of the nine currently supported cryptocurrencies. CoinFlip takes a cash percentage of each transaction.

In 2021 CoinFlip was the fastest growing company in Chicago, according to the Crain's Chicago Business' annual Fast 50 list, with growth during the past five years at almost 2,000,000% (yes, that's 2 million percent) and revenue last year of more than $50 million. Polotsky estimates revenue this year may be closer to $100 million off $1.5 billion in transactions. CoinFlip has more than 2,000 ATMs available in 47 states (plus Washington D.C.), with plans to expand into the remaining three.

In 2021 Polotsky transitioned from running the day-to-day operations as CEO to a new role as chief adviser and founder, which allows him to focus on global strategy and developing new product lines for CoinFlip.