Though, Riot Blockchain was not named as a perpetrator in that SEC lawsuit. Riot Blockchain has teased introduction a cryptocurrency exchange from ...
source https://www.google.com/url?rct=j&sa=t&url=https://www.namecoinnews.com/riot-blockchain-to-launch-a-regulated-cryptocurrency-exchange-by-end-of-2019/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG8O2QT0Tfc-2EhikyAHujT8wFvaw