China, which powers nearly 80 percent of the global cryptocurrency trade, relies on a particularly polluting type of coal, lignite, to power some of its mining.
Wall Street's main indexes fell in a late-session selloff on Tuesday as weak housing starts data overshadowed better-than-expected earnings from Walmart and Home Depot.
WeWork is the latest in a string of popular companies to announce plans to incorporate cryptocurrencies in their businesses.
Visa Inc said last month it would allow payment settlements using cryptocurrency while PayPal Holdings Inc launched a crypto checkout service on March 30.