Binance.US was founded in 2019 in response to regulations that impacted Binance’s business in the United States. U.S. regulators believed some of the crypto assets that Binance’s trading platform allowed a user to trade were essentially securities. A security is a category of financial products which includes stocks, bonds, and specialized derivatives like futures. Trading in securities in the United States requires extensive licensing. Rather than change its main exchange to suit U.S. regulations, Binance instead created a separate exchange for U.S. customers, called Binance.US.
"The U.S. has always been a very important market; globally it's one of the biggest markets for any business, including in cryptocurrency," he said. "We want to be fully compliant. Before we didn't feel we had the experience to do that but now we have our partners so we want to take this opportunity to explore the market."

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UK crypto asset businesses must register with the Financial Conduct Authority - and you can check to see if they are on the Financial Services Register or if they are on a list of firms with temporary registration.