How is SD different from other stablecoins?

SD is a fully decentralized stablecoin. Unlike other centralized coins, e.g. USDT, SD has no 1:1 backing through a centralized USD treasury. To optimize the capital efficiency, SD doesn't use any collateral, unlike DAI or sUSD. The voluntary elastic supply mechanic is different from Ampleforth (AMPL) and Based (BASED). SD is inspired by Empty Set Dollar (ESD), but yet responds faster to market demand through more frequent epochs, extended supply caps, and a modified supply extension/contraction formula.