Single Dog Swap Token, SDST for short. It is the only governance token of the decentralized exchange SingleSwap and a sub-currency of Single Dog (SGDOG). The total circulation of SDST is 21,000. There is no private placement, no airdrop, and no additional issuance. All are produced through mining, and the daily output is halved year by year to ensure scarcity. SDST can participate in the "dual mining mechanism" output of liquidity mining and transaction mining by adding SGDOG/HT, SDST/HT fund pool. SDST can participate in mining pool mining, dig more than one coin, and mine various mainstream tokens.