Variable Time Dollar (VTD) is an algorithm based ERC-20 Stablecoin, which has the characteristics of flexible supply, no mortgage, anti censorship, and variable era length. VTD aims to promote the rapid development of decentralized finance through its unauthorized combination with DeFi products, stability as an asset, and deep liquidity (as its adoption rate and market value increase). VTD is a fork in Dynamic Set Dollar (DSD), and DSD itself is a fork in Empty Set Dollar (ESD)....