Tether says it completed long-promised 'Big Four' audit of finances behind $180 billion USDT stablecoinKPMG U.S. examined Tether's books and even counted its gold bars as the $180 billion USDT issuer said it completed its long-promised financial audit.Tether CEO Paolo Ardoino (Nikhilesh De/CoinDesk)Tether said it has completed its first full financial audit, a step it had promised for years amid scrutiny of the reserves backing its USDT stablecoin.KPMG U.S. issued an unqualified opinion on firm’...