Hey great work bro. Just checked your site. It seems perfectly fine but logo alone seems pretty similar to the VK site like clubbing the text together. Other than that your work awesome. When selecting the each coins it shows some tag list on above the coin information in detailed.
I do not think back button you have added is very much needy one.

Suggestions:
You have aligned the overview text in the center of the webpage. Move that to left side as 'OVERVIEW:'
Add more tabs followed by OVERVIEW on the right side. Example, you can add list like MOST POSITIVE TODAY(bumped coins), MOST NEGATIVE TODAY(dumped coins)
You can add the tokens are also in the list.