CleanSpark (NASDAQ:CLSK) unveils a new logo, wordmark, icon and a new website to reflect the company's focus on sustainable bitcoin (BTC-USD) mining using its background in energy tech. The new icon is a star-within-a-star that symbolizes the combination of CleanSpark's (CLSK) business segments. "We leverage our deep energy background to make our operation sustainable, which is important given how energy-intensive this industry is - so we wanted our updated brand to reflect that," said CleanSpark Executive Chairman Matthew Schultz. Shares of CLSK rise nearly 2% out of the gate. Earlier this month, CleanSpark bought about 2.6K units of crypto mining machines.