USD Coin is a stablecoin just like USDT or TUSD, it was founded by Circle & Coinbase with support from Goldman Sachs. A project that is not decentralized and based on a fiat currency, what can this mean with respect to cryptocurrencies? Why would people use USD Coin? In terms of currency it is a cryptocurrency that uses all the benefits of the blockchain but is stable as a fiat currency in terms of value. The USD Coin can be used as a currency to buy other cryptocurrencies since its value is paired with the dollar. stablecoin in addition to being able to make high volume transfers in a matter of seconds using the benefits of a blockchain system.