BlockBeats News, December 17th, the Solana synthetic stablecoin protocol Solstice has chosen Ondo's OUSG underlier as its collateral for the USX stablecoin. OUSG holds a diverse institutional tokenized Treasury bond portfolio from some of the world's most trusted asset management companies, including BlackRock, Fidelity, Franklin Templeton, State Street, WisdomTree, and Wellington Management.