Digital gold trading blockchain
bitcoin is equivalent to digital gold. As a generally recognized equivalent, gold naturally has monetary properties and has been regarded as a kind of currency since ancient times. Bitcoin was born in 2009 and created by a person named Nakamoto. As the earliest digital currency, it was worthless at the beginning of creation. Until 2017, the highest transaction price of bitcoin exceeded 30000 RMB. The reasons why bitcoin became a valuable digital currency are as follows:
first of all, it is like gold, as a natural mineral, The total amount of bitcoin is limited. Bitcoin can not be over issued according to its own algorithm, so there will be no rapid devaluation of currency e to excessive currency issuance. The number of bitcoin is controlled to no more than 21 million e to the algorithm, so it can not be issued in large quantities, so its value is guaranteed
the difference between digital currency, electronic currency and virtual currency
in fact, digital currency is a kind of indexed RMB, a legal encrypted digital currency and an alternative currency in the form of electronic currency. Digital currency can be divided into two types: non cryptocurrency (e-gold, XRP) and cryptocurrency (bitcoin)
it can not be completely equivalent to the virtual currency in the virtual world, because it is often used for real goods and services transactions, not limited to online games and other virtual spaces. It is different from Alipay and WeChat, and Alipay, WeChat payment and mobile phone banks are all electronic money, not digital money. The popular digital currencies in 2016 include bitcoin, lightcoin, bitstock, etc. At present, there are thousands of digital currencies issued all over the world
virtual currency refers to the non real currency, especially the currency in the network virtual economy. The issuer is not the central bank, and it can only circulate in a specific virtual environment. In the case of the connection between virtual and reality, virtual currency has its real value. Well known virtual currencies, such as online currency of Internet company, q-coin of Tencent company, q-point, roll counting of Shanda company, u-coin meter ticket launched by Sina (used for igome game), chivalrous Yuanbao (used for chivalrous road game), and grain silver (used for bixue Qingtian game). Digital currency can be used for real goods and services transactions, but only the digital currency issued by the state is legal digital currency. For example, bitcoin is illegal digital currency
since the beginning of the year, the relevant person in charge of the people's Bank of China has said that the future of mobile payment is bright, and the central bank is actively studying the relevant research results and practical experience at home and abroad to strive for the early issuance of digital currency. At the digital currency seminar of the people's Bank of China held on January 20, the relevant person in charge of the people's Bank of China disclosed that the central bank has set up a special research team since 2014 to conct in-depth research on the digital currency issuance and business operation framework, key technologies, circulation environment, etc., and strive to launch the digital currency issued by the central bank as soon as possible. At present, the research has achieved phased results
what benefits will digital currency bring to our lives
for this problem, the relevant person in charge of the central bank said that if the digital currency is successfully issued, it will bring many conveniences: it can effectively rece the high cost of the issuance and circulation of traditional paper money, and improve the convenience and transparency of economic transaction activities; It can rece money laundering, tax evasion and other illegal and criminal acts, enhance the central bank's control over money supply and money circulation, better support economic and social development, and help the comprehensive realization of Inclusive Finance; It helps to build a new financial infrastructure, further improve the payment system, improve the efficiency of payment and clearing, and promote the upgrading of economic quality and efficiency. More digital currencies can focus on bitMom
Almost everyone, even those who don't believe in universal certification, has a positive view on blockchain technology, because it may change the whole world. However, it has been ten years since the invention of blockchain technology, and we still do not really use blockchain technology. Some people say that bitcoin is based on blockchain technology, so with its development, the main use of blockchain is as a payment system or value storage means
there are many examples
there is no doubt that blockchain technology can be integrated into almost all sectors of modern life (including the above sectors). However, it has been nearly 10 years since the birth of blockchain technology, and no field has replaced the original technology with blockchain technology. These ideas are good, but the technology is too slow to implement
Blockchain 4.0 is the landing of a large number of scene applications and the deep integration of multiple fields, such as blockchain plus artificial intelligence, supercomputing, big data, etc., which requires and promotes the upgrading of the underlying infrastructure construction, greatly improves its inclusiveness, carrying capacity and scalability, builds its solid ecological network system, and makes the blockchain value network radiate more scenes, Value is more reflected. The block chain structure is as follows:
as a new generation of public chain, SPG super gold puts forward its own innovation on the basis of absorbing the advantages of public chain in the past. Considering that Neo has its own unique advantages in solving the problems of low scalability, low concurrency and low transaction feedback of the public chain, and has achieved practical results, at the same time, in the super gold cryptocurrency SPG generation mode, it prefers the mining output mode under the more decentralized workload proof mechanism, Therefore, super gold creatively launched a two-tier structure combining transaction verification with Ethereum workload proof algorithm ethash, which separated transaction verification and block packaging synchronization, so as to better solve the problems of low scalability, low concurrency, low transaction feedback and block congestion of blockchain, At the same time, the smart contract system of super gold is more suitable for the development trend of current blockchain technology. The support of cross chain protocol for cross chain transaction can help build a public chain platform with higher universality, wider application range and more prosperous and stable ecology. Therefore, SPG super gold can be classified as blockchain 4.0 array
connect the device to the computer with USB cable, and then you will hear the prompt sound that the computer has been connected successfully
please turn off the device first, and then you will hear the prompt that the computer is not connected successfully
first press and hold the power key to display the apple logo, and then press and hold the on / off key and the home key until the logo disappears. Continue to press and hold the power key for about 4-5 seconds, and continue to press and hold the home key until an iPhone in recovery mode is detected by iTunes (if successful, the iPhone should be in black screen). If redsn0w is used to detect, the device model in DFU will be displayed at the bottom of the interface< Method 2: enter DFU in any state (white apple or unlimited restart)
connect the device to the computer
Press and hold the on / off key and home key directly until the logo disappears. Just follow the above steps
method 3: do not press the key to enter the DFU (it is recommended to use the device with damaged key)
download the firmware of the device corresponding to the latest system version (do not use the firmware that Apple has closed for verification)
Download redsn0w and enter extra even more DFU IPSW in turn
at this time, redsn0w will prompt you that this is the operation of making DFU firmware, not the normal operation of restoring the system. The choice is
after selecting the latest official firmware, redsn0w will start making DFU firmware and wait for completion
Open iTunes, close redsn0w, shift + restore (for Mac, please use option + restore) and select the DFU firmware (prefixed with enter)_ DFU), wait for error 37 in the recovery process. At this time, the device is already in DFU mode.
Bitcoin is known as digital gold. It's just that it's really valuable. Now it's very valuable. Although the price has fallen, it's still much more expensive than it was in the past four or five thousand years, but it's just called digital gold, which is totally different from the real market value and influence of gold{ RRRRR}
so although he is known as digital gold, he can't be compared with real gold. On the other hand, countries in the world have great ability to measure their own foreign exchange reserves and cope with the risks of international change. One indicator is the amount of gold reserves. Because of wars and other things, their paper money is worthless, Even if the world financial system collapses, gold and silver, which are natural precious metals, still have a fixed purchasing power