Bitcoin's price crash casts a shadow over mining firms, which have spent $500M+ since Sept. to prep for the "halving" in May, where mining rewards drop by 50% (Wolfie Zhao/CoinDesk)

Wolfie Zhao / CoinDesk:
Bitcoin's price crash casts a shadow over mining firms, which have spent $500M+ since Sept. to prep for the “halving” in May, where mining rewards drop by 50%  —  Bitcoin's price crash last week has cast a shadow over mining firms, which have spent over half a billion dollars overhauling equipment …