Between 2016 and 2017, investors mined more than 81 million HempCoin, which they traded on the cryptocurrency exchanges C-Cex and Yobit.
source https://www.google.com/url?rct=j&sa=t&url=https://www.theglobeandmail.com/business/article-us-regulators-take-action-against-cryptocurrency-firms/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNFBIwNQ-nEcsGgQYiMGBj3w_4EfvA
