Most bitcoins are bought with tethers and tethers are issued by Tether inc. Thether inc. claims that tethers are backed by real US dollars, however nobody know

Most bitcoins are bought with tethers and tethers are issued by Tether inc. Thether inc. claims that tethers are backed by real US dollars, however nobody knows whether this is true and Tether inc. has been shown to have lied about that in the past. In short, the widespread suspicion is that exchanges and other parties are using unbacked tethers to pump the price of bitcoin up.