RUSD is a decentralized algorithmic stable coin, the first stable coin with automatic pledge function, which will reward its holders with various other tokens. RUSD will establish new standards in the operation of DeFi and stable currency. Innovative pledge methods and price stability (linked 1:1 to the US dollar) will make RUSD stand out among many stable currencies. People not only use RUSD stable coins to convert volatile cryptocurrencies, but also can hold them and receive additional rewards from them.