What does a bitcoin mining business do?
Could you elaborate on the operations and purpose of a Bitcoin mining business? Specifically, I'm curious to understand how they contribute to the bitcoin network and how they generate profits. Do they simply solve complex mathematical problems to verify transactions, or is there more to it? Additionally, what are the key challenges and risks involved in operating such a business, and how do miners ensure their operations are sustainable and profitable in the long run? Your insights would be greatly appreciated.