Bitcoin has broken through the $30000 mark, a record high, according to bitstamp. It home once reported that bitcoin approached us $20000 at the beginning of December 2020. On December 17, it just crossed the threshold of $20000, and today it has exceeded $30000. On January 1, 2020, the price of bitcoin was $7199.8. According to Wikipedia, bitcoin is a kind of cryptocurrency based on decentralization, using point-to-point network and consensus initiative, open source code, and using blockchain as the underlying technology. Bitcoin was published by Nakamoto on October 31, 2008, and Genesis block was born on January 3, 2009. Bitcoin can be issued through a computer operation called mining, and the number of bitcoin protocols is limited to 21 million.