Already down more than 50 per cent from its peak at the height of crypto-mania last year, bitcoin has been battered this week by fresh claims its price has been artificially manipulated by the digital currency ‘Tether’. Tether is a so-called “stablecoin” pegged at one-to-one value with the US dollar. Its alleged that Tether is actually being printed out of thin air, without corresponding dollar deposits thereby pushing cryptocurrency prices up.