Virtual currency starts trading
anyone can run software on special hardware to become a bitcoin miner. Mining software monitors transaction broadcast through P2P network and performs appropriate tasks to process and confirm these transactions. Bitcoin miners can earn transaction fees paid by users to speed up transaction processing and additional bitcoin issued according to fixed formula
new transactions need to be included in a block with mathematical workload proof before they can be confirmed. This kind of proof is hard to generate because it can only be generated by trying billions of calculations per second. Miners need to run these calculations before their blocks are accepted and rewarded. As more people start mining, the difficulty of finding effective blocks will be automatically increased by the network to ensure that the average time to find a block remains at 10 minutes. Therefore, the competition for mining is very fierce, and no indivial miner can control the content contained in the block chain
workload proof is also designed to rely on previous blocks, which forces the time sequence of block chain. This design makes it extremely difficult to cancel previous transactions, because the workload proof of all subsequent blocks needs to be recalculated. When two blocks are found at the same time, the miner will process the first block received, and once the next block is found, it will be transferred to the longest block chain. This ensures that the mining process maintains a global consistency based on processing capacity
bitcoin miners can neither increase their rewards by cheating, nor deal with the fraulent transactions that destroy the bitcoin network, because all bitcoin nodes will reject the blocks containing invalid data that violate the bitcoin protocol rules. Therefore, even if not all bitcoin miners can be trusted, the bitcoin network is still secure.
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There are two reasons for the prohibition of virtual currency trading by the state:
1. The price fluctuates violently and the consumer protection is lacking:
virtual currency is the proct of network, and the digital information flowing in the network is beyond everyone's control. The code of cyberspace is the basis of the operation of virtual currency, investors can only operate through the front-end interface, seemingly "control" the virtual currency. The operator of the virtual currency service organization may become the actual controller of the virtual currency through the control code
bitcoin and other so-called "virtual currencies" lack a clear value basis, the market is full of speculative atmosphere, the price fluctuates violently, and investors blindly follow suit, which is easy to cause capital losses
2. Evade supervision and become the "accomplice" of criminal activities:
bitcoin is popular as a payment tool in the so-called "dark web" world“ The "dark net" is full of all kinds of serious criminal activities. One of the original intentions of the invention of bitcoin is to evade regulation. It has the characteristics of anonymity and convenient cross-border flow, and has become the preferred tool of "underground economy"
the existence of bitcoin and exchanges and other instrial chains has constructed a illegal financial market for asset transfer and financing in addition to legal currency, increased the difficulty of regulatory authorities in managing financial security and stability, and promoted regulatory arbitrage and financial crimes. The risks and social security risks it brings to the financial market are far higher than its innovative value
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virtual currency transactions are not protected by law:
according to the notice on preventing bitcoin risks issued by the people's Bank of China and other departments on December 3, 2013 and the announcement on preventing financing risks of token issuance issued by seven ministries and commissions including the people's Bank of China on September 4, 2017, virtual currency is not issued by monetary authorities, It is not a real currency because it does not have the monetary attributes of legal compensation and compulsion
in terms of nature, virtual currency should be a specific virtual commodity, which does not have the same legal status as currency, and can not and should not be used as currency in the market. Although citizens' investment and trading in other virtual currencies are personal freedom, they can not be protected by law
although virtual currency is relatively lacking in the level of financial supervision, it is worth discussing that it is the research on the technical level of blockchain
at present, the transaction of virtual currency is closed in China. After all, it involves financial issues. This aspect may be involved in the later part of the meeting, so we should pay attention to it.
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