Ethena Labs has launched USDtb, a stablecoin backed by BlackRock's BUIDL, maintaining 90% of its reserves in the fund. Operating independently from USDe, USDtb is available on Ethereum mainnet, Base, Solana, and Arbitrum, and aims to provide users with a different risk profile while stabilizing USDe during bearish market conditions. Ethena has attracted nearly $6 billion in user funds since early 2024, and its governance token, ENA, recently saw a significant rally following a major purchase.