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Because Bitcoin is a virtual currency all requires a special graphics card mining machine to dig into Bitcoin.
Bitcoin (English name: Bitcoin, abbreviated as: BTC) is the world's first decentralized cryptocurrency based on blockchain technology. It has been invented for 10 years since 2008. Bitcoin is a virtual currency, with a total amount of 21 million pieces, and the total amount is fixed. Bitcoin players can buy special graphics card mining machines to dig Bitcoin. So far, Bitcoin has been halved twice and has been excavated more than 17 million pieces, and there are only about 4 million left to be excavated. According to some people, the last bitcoin will be excavated in 2140.