TRON Stablecoin $USDD Release Roadmap

TRON stablecoin $USDD release roadmap. The main content includes four stages: the first stage $USDD is released and enters circulation; the second stage testnet of $USDD decentralized network will be officially launched; the third stage $USDD decentralized network will be officially released; the fourth stage $USDD mainnet will be officially launched.