PANews, Oct. 6 (Xinhua) -- The Ethereum re-staking protocol ether.fi announced the launch of the USD-denominated stablecoin ether.fi USD (USD), powered by Ethena. ether.fi said that more than $300 million of stablecoin assets are currently operating in its ecosystem, and the launch of USD will allow these stablecoin liquidity to be natively integrated into its subsequent products.