The four most famous international exchanges:

Binance INTL	OKX INTL	Gate.io INTL	Huobi INTL
China Line　APP DL	China Line　APP DL	China Line　APP DL	China Line　APP DL

Note: The above exchange logo is the official website registration link, and the text is the APP download link.

Bitcoin is an electronic currency
, which consists of a series of complex codes generated by computers. New Bitcoins are manufactured through preset programs. As the total amount of Bitcoin increases, the price of Bitcoin also changes from time to time. Now everyone has mastered more and more basic information about Bitcoin, but in fact, the total amount of Bitcoin is limited and cannot grow infinitely. So what is the total amount of Bitcoin? Is the total amount of Bitcoin fixed?

What is the total amount of Bitcoin? Is the total amount of Bitcoin fixed?

The total amount of Bitcoin is 21 million. When Satoshi Nakamoto designed Bitcoin, he stipulated that each Bitcoin can be subdivided into 8 decimal places. Each block issues
50 Bitcoins. After every 210,000 blocks, the Bitcoin output of each block is halved.

Because Bitcoin generates a block every 10 minutes, 210,000 blocks take about four years. As of 2017, Bitcoin production has been halved twice, and currently each block issues 12.5 Bitcoins.

Around 2045, 99.95% of Bitcoin will be issued. By 2140, Bitcoin cannot be further subdivided. At this point, Bitcoin has been completely issued, with a total issuance of about 21 million Bitcoins (Note: the actual number is 20999999.97690000).

Many Bitcoin players are attracted by the fact that Bitcoin cannot be issued at will, but this issuance mechanism encourages miners to invest in Bitcoin mining as early as possible, so that the Bitcoin system has gained a lot of computing power and security. In stark contrast to the attitude of Bitcoin players, whether the deflationary monetary policy is reasonable is very controversial in monetary theory, and economists have polarized attitudes towards the fixed total amount of 21 million Bitcoins.

Keynesian economists believe that the government should actively regulate the total amount of money and use the tightness of monetary policy to timely refuel or brake the economy. Therefore, they believe that the fixed total amount of Bitcoin currency sacrifices controllability, and what is worse is that it will inevitably lead to deflation, which will in turn hurt the overall economy.

Austrian economists hold the opposite view. They believe that the less government intervention in currency, the better. Deflation caused by the fixed total amount of currency is not a big deal, and is even a sign of social progress.

The Bitcoin network generates new Bitcoins through mining. Mining is essentially using computers to solve a complex mathematical problem to ensure the consistency of the Bitcoin network's distributed accounting system. The Bitcoin network automatically adjusts the difficulty of the mathematical problem so that the entire network gets a qualified answer about every 10 minutes. The Bitcoin network will then generate a certain amount of Bitcoin as a bounty to reward those who get the answer.