Securitize, a brokerage firm for the Digital Liquidity Fund (BUIDL), has submitted a Frax Improvement Proposal to add BUIDL as the backing collateral for the Frax USD stablecoin. Under the improved plan, the use of BUIDL as a collateralized reserve asset offers yield opportunities, deeper liquidity and transfer options, and, thanks to the backing of BlackRock, the world's largest asset manager, reduces counterparty risk.