概述此 wiki 的关键时刻和里程碑的时间表
1st April 2022
On April 21, 2022, H.E. Justin Sun, announced the launch of USDD, a decentralized USD stablecoin in an open letter on Twitter
1st May 2022
On May 5, 2022, USDD was launched by TRON DAO
1st November 2022
In November 2022, the USDD depegged, falling to below $0.97 at one point due to the FTX collapse