Yes, US residents may use HitBTC’s trading platform. At the moment there is no restriction on any countries’ residents for signing up and using HitBTC’s platform. You are required to provide your country of residence upon registration, however, you can use the platform without further verification up to 1 BTC daily and 5 BTC monthly withdrawal limit. Even if you decide to move to higher-level verification, you can still use HitBTC if you are from the United States because HitBTC is a crypto-only platform, which does not handle and fiat money so it is not required by law to have specific licenses to offer its services even to US residents.