Shares of popular cryptocurrency exchange platform Coinbase (COIN) have been under more selling pressure. With the broader tech sell-off and renowned short-seller Jim Chanos taking aim at the company, the perfect storm could be in the works as the stock looks to bottom out and regain its footing. Coinbase stock shed around 58% of its value from peak to trough and is now attempting to move on from its brief plunge just north of $150 per share. Now, it's never a good idea to be on the receiving end of a short-seller, especially one as famed as Jim Chanos.