DefiLlama has independently verified the backing of frxUSD, Frax Finance's fully collateralized stablecoin. Frax framed the verification as "two OG DeFi teams collaborating" and said more updates are coming as it applies for a GENIUS license under the US federal stablecoin framework.
Frax
Frax is the world’s first fractional-algorithmic stablecoin. The Frax Protocol introduced the world to the concept of a cryptocurrency being partially backed by collateral and partially stabilized algorithmically.