This cryptocurrency was launched in 2016, the name it has suggests that it is a stable asset with the dollar, however this does not happen since it is an asset that is usually mined in which rewards are paid.
According to official data, it is listed only in yobit, but this exchange generally maintains currencies that do not have active chains and everything indicates that Dollarcoin is also deactivated since there is no updated data.
All its processes are outdated and all the information that can be found in bitcointalk is from 2016, as well as the forums and comments are from that year.
In general I would not recommend buying this cryptocurrency as you will not be able to withdraw and you may lose your funds