Now bitcoin is in a downturn and the profit margin is very small. Buying money is risky and you need to be cautious when entering the market.
Bitcoin is a * * * knowledge network, which has contributed to a brand-new payment system, a completely digital currency. It is the first decentralized peer-to-peer payment network, controlled by users, without central management or intermediary. From the user's point of view, Bitcoin is much like cash on the Internet. Bitcoin can also be regarded as the best three-way accounting system at present.