The joulecoin project is a half-dead project that insists it is still alive! The life of this project has been relatively long and it has been operating since 2014. But this currency has become an inactive currency since April 18, 2019 in coinmarketcap.
Of course, there are still pairs in the yobit exchange for XJO (which I found with the help of coingecko, but all of these pairs are almost inactive pairs with very low trading volumes, as well as the lowest selling price and highest buying price There is a big difference in all these pairs.
I have already seen that some currencies whose other project is a dead project are active in yobit, so a pair in this exchange can not be a reason for the project to be alive at all.