Tether is suing financial services company Swan Bitcoin over a contract dispute between the two companies' Bitcoin mining joint venture. A Tether spokesperson wrote in an email: "Tether and its co-plaintiff 2040 Energy Limited have recently commenced proceedings against Swan in the High Court of England and Wales. "In our partnership with Swan, Tether has always been honest in supporting common business objectives and adhering to all relevant agreements," Tether said. On the contrary, Sw...