The Central Bank (CBI) of Iran bought $507 million of Tether's USDT stablecoin with the primary purpose of manipulating foreign exchange markets and bolstering the value of the rial, which recently traded at 1.4 million for one U.S. dollar, according to blockchain analytics firm Elliptic. Elliptic said it uncovered the purchases through two leaked documents that allowed researchers to map out the central bank’s wallet infrastructure, "revealing a systematic accumulation of USDT totaling at least half a bi ...