It seems to me that the easiest and most obvious way to make money is to master trading, and taking into account such fluctuations, you can make great money, and I think not only on bitcoins but also on alternative cryptocurrencies. In the last 10 days alone, the price jumped by $ 10,000 down and up, if you sell and buy on time and competently, I think you could already make very good money. Not to mention those who have bought for a long time and can sell at the top.