Tether launched in 2014 with one simple pitch: every token in circulation would be backed one to one by a dollar sitting in reserve. For years, almost nobody could verify that claim, because Tether never published a full audit, only periodic attestations from accounting firms describing a snapshot of reserves, not a complete audited financial statement.
That gap between promise and proof turned into years of accusations. In 2019, the New York Attorney General opened an investigation into whether Tether and its sister exchange Bitfinex tried to cover up the loss of about $850 million in customer and corporate funds held by a third-party payment processor, using Tether reserves to plug the hole without telling anyone. The inquiry ran nearly two years. In February 2021, Tether and Bitfinex settled, paying $18.5 million and agreeing to publish quarterly reports on Tether's reserve composition for two years, without admitting wrongdoing.
The NYAG's findings were blunt. Investigators said Tether had, at times, held no reserves at all backing the dollar peg, and that from mid-2017 the company lost banking access and misled its own users about liquidity problems during that stretch. That's about as close as a regulator gets to saying a stablecoin issuer wasn't telling the truth about the one thing that makes it a stablecoin.
None of that stopped Tether from growing into the backbone of crypto trading. By early 2026, USDT's circulating supply had crossed $185 billion, holding well over half of the entire stablecoin market, ahead of USDC and every other competitor combined. Over a recent 30-day stretch, USDT changed hands roughly $3.76 trillion worth of times, more volume than Bitcoin itself moved in the same period. In parts of the world dealing with currency instability, from Argentina to Nigeria, USDT has become a practical way people move dollars without touching a bank.
That's the strange part of this story. Tether is simultaneously the asset regulators called out for misleading its own reserve claims, and the asset the entire crypto trading industry depends on to move money between everything else. Every BTC to USDT pair, every arbitrage trade, every exchange balance parked in stablecoin between positions runs through a token whose issuer has never opened its books to a full independent audit.
Tether has published attestations more frequently since the settlement and reports holding a large share of reserves in short-term US Treasuries, a very different balance sheet than the one regulators described in 2019. Whether that's enough transparency depends on who you ask, and mostly on whether you've ever needed to redeem a large amount during a moment of stress.
The peg has held through multiple market crashes that took other stablecoins down with them. Usage keeps climbing every year regardless of the headlines. Maybe that's the market deciding the old accusations don't matter as long as redemptions keep working. Or maybe nobody's tested the reserves under real pressure since 2019.
Do you treat USDT and USDC as the same kind of asset, or does the history change how much of each you're willing to hold?
Personal view, not advice. Do your own research.
#Tether #USDT