If you haven't been following along, here's why this matters: Tethers is a sole-source cryptocurrency, pegged to the US dollar. Bitfinex produces it, though they're cagey (some would say outright lying at times) about the level of involvement. The primary purpose of tethers is money laundering, even more so than cryptocurrency generally. Bitfinex was cut off from the US financial system, which makes it impossible for…
Tether announcement on their own website mentions their Taiwan banks have frozen all international wire transfer since April 18: https://tether.to/announcement/ Tether has printed $600 million worth of tokens since, so either: 1) Local Taiwanese have deposited $600 million to buy Bitcoins through domestic wires, OR 2) Tether is lying and printing tokens out of thin air. Place your bets gentlemen.
They don't need to do that on that many exchanges to have effective peg to USD. However they of course still need traditional bank accounts, and they need to trade the BTC on OTC markets or somewhere else.