What is Pyusd backed by?

As a keen observer in the world of cryptocurrencies and finance, I'm always intrigued by the underlying mechanisms that support various digital assets. With Pyusd gaining increasing attention in recent times, I'm curious to know: What is Pyusd backed by? Is it a traditional asset such as gold or a basket of fiat currencies? Or does it rely solely on the trust and consensus of its users and network? Understanding the fundamentals behind Pyusd's value proposition is crucial in assessing its long-term viability and potential.