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Volume 2: Hacker Holy Land Chapter 670: Silk Road

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    GPU, the graphics processor, is designed to handle complex graphics calculations. It is the "heart" of the graphics card, equivalent to the role of the CPU in the computer.

    Like the CPU, the GPU is designed to complete computing tasks. However, its role is more specific than the CPU, and it has far more cores than the CPU. Therefore, its parallel floating-point computing capability is far behind the CPU.  of.

    GPU was born for video games, but in recent years, with the continuous development of GPU technology, it is no longer limited to the field of graphics rendering, but has begun to move toward supercomputers, medical imaging, fluid mechanics, seismic exploration, etc. that require large amounts of data calculations  A common feature of these fields is that they require a large number of identical operations on massive amounts of data.

    Take drawing a graphic as an example. The mechanism of the CPU means that it can only draw one pixel at a time, or 2-4 at the same time. The mechanism of the GPU is equivalent to having a print head array like a seal, which can be drawn in one go.  Drawing completed.

    The advantage of GPU lies in its super parallel computing capability.

    Almost eight months after the birth of Bitcoin, the difficulty began to rise, and the benefits obtained from using CPU for mining began to gradually decrease. Electricity charges often accounted for almost half of the costs.

    At this time, some people on the forum began to discuss the use of graphics card technology for mining, because as early as in the field of medical research, some people had used graphics card arrays to perform protein folding distributed calculations and brute force password cracking calculation tasks.

    The essence of "mining" is actually a cracking of a specific algorithm, which is basically a large number of repeated calculations. This is the strength of the GPU. In this regard, the CPU is completely inferior to the GPU.

    Therefore, some technically savvy miners began to study the use of graphics cards for mining.

    Since there has never been any precedent before, you have to use a graphics card to mine.  You must write your own supporting mining program.

    The first miner to use a graphics card for mining was a

    tfo

    z.  He is one of the volunteer developers of Bitcoin software. After a period of software writing and debugging, he successfully implemented mining at his home.

    ?Facts prove.  The computing power of mining using a graphics card is several times higher than that of a CPU.

    Soon, more and more people began to invest in graphics card mining.

    When it first started, this mining method was only spread in a small area.  Even if everyone developed it, for the sake of their own interests, they did not make it public.

    It was not until more than two months later that the first OpenGL mining program was officially announced in the open source community.

    The era of graphics card mining has officially begun.

    Miners who originally invested a lot of money in purchasing CPU hardware for mining suddenly suffered huge losses. Some of them sold off their previous mining equipment and quit the mining field, while others continued to purchase new equipment and continue their operations.  Mining business.

    Entering the era of graphics card mining, the computing power of the Bitcoin network has once again made a new leap.  At this time, it is already several orders of magnitude more difficult to implement a 51% attack than before, and the probability is extremely slim.

    In this period of time.  Something else happened.  Lin Hong completely faded out of the development, maintenance and upgrade of Bitcoin software.

    One of the most significant events is the emergence of a Bitcoin black market called "Silk Road" on the Internet.

    In the design thinking of Bitcoin.  One of the important features is complete anonymity. There is no need to disclose any relevant information about oneself when using Bitcoin, and there is no need to transfer and pay Bitcoin at all.

    This feature is highly praised by everyone. After all, no one wants others to have the right to inspect their private property at any time.

    There has always been a black market for drugs, arms, and other illegal transactions in the world. Although governments in various countries

    ??Fu all crack down hard, but demand is king. The more banned something is, the more profitable it is. If there is profit, some people are willing to take risks for it.

    In the traditional black market, everyone prefers to use cash directly for transactions, because no one wants to bear the risk of their account being compromised by the bank and the government

    There is a danger of freezing, which is why, in gangster movies, gangsters and drug lords often carry a suitcase of cash when making transactions.

    The emergence of Bitcoin just solves this payment problem.

    After the emergence of Bitcoin, its privacy and security have been recognized by many people. Many people have expressed their willingness to accept payment in Bitcoin. They would rather exchange Bitcoin back to their local currency, because after such a transfer, the funds will be equivalent to  Since the money has been laundered, no one knows where the money came from.Came from here.

    It was against this background that the ¡°Silk Road¡± came into being.

    "Silk Road" is a drug and arms trading website. On this website, drugs and arms are clearly marked with prices, and only Bitcoin payments are accepted.

    Just like the eBay website, more than ten arms dealers and several pharmaceutical suppliers have opened stores on it, and have set up dedicated customer service to answer customer questions.

    As small as a pistol or a shaking head

    pills, as large as rocket launchers, ice

    Poisons and other items are all available above.

    Of course, if you want to access this website, you cannot access it directly using a browser. You must also know how to use encryption software such as Bit Messenger as a proxy to access it.

    The suppliers above are very user-friendly and provide more thoughtful services than ordinary e-commerce websites. They accept orders from all over the world. As long as you place an order, no matter where in the world you are, they will be responsible for the logistics and delivery to ensure safe arrival.  , of course, the postage needs to be paid by the customer himself.

    Lin Hong was not surprised by the emergence of the "Silk Road". He had already anticipated this situation when he designed Bitcoin.

    This is not caused by the emergence of Bitcoin. The black market has always existed. This has been the case since ancient times. Even if there is no Bitcoin, they have other methods of payment. There is essentially no difference between using cash and using Bitcoin.

    Of course, Lin Hong cannot deny that the emergence of Bitcoin has facilitated these illegal criminal activities and increased the difficulty for law enforcement officers to detect cases.

    But there is no way around it. Everything has many sides. Whether Lin Hong¡¯s invention of Bitcoin opens Pandora¡¯s box or the door to heaven remains to be tested by time.

    Of course, Lin Hong is not completely inactive. He will continue to observe in secret and guide the development direction of Bitcoin at the appropriate time, trying to make it move in a positive direction.

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