Characteristics of computational virtual currency
litecoin (LTC), released on October 7, 2011, is the most valuable counterfeit coin at present, accounting for about 2% of BTC's market value. The current unit price is US $2.31, with a total currency value of US $38 million
this is also a distributed (decentralized) digital currency. Unlike the sha256 mining algorithm used by bitcoin, LTC adopts scrypt algorithm. Scrypt algorithm uses sha256 as its subroutine, and scrypt itself needs a lot of memory. Each hash is used as the seed of the input, and then it needs a lot of memory to store another pseudo-random sequence to generate the pseudo-random points of the sequence and output the hash value. In the mining of BTC (bitcoin), it is not enough to rely on simple graphics card mining (it takes about ten to dozens of days to dig a BTC with general configuration graphics card). The emergence of various expensive mining machines has raised the threshold for ordinary people to get BTC through mining, while LTC has certain advantages in using PC graphics card mining This passage comes from Zhihu.)
compared with BTC, litecain has made a little improvement in technology. If BTC is gold now, LTC is silver for the time being
the biggest advantage of litecoin is that it can confirm the authenticity faster. The virtual currency is designed and maintained by Charles Lee. Bitcoin transactions need to be verified, and the average verification time is more than 10 minutes. Most transaction websites need 1 hour to verify. The average transaction confirmation time of liteoin is 2.5 minutes. Developers claim that shortening the verification time increases the practicability of virtual currency. The bitcoin mining efficiency of customized machine and AMD GPU is the highest, making it almost unprofitable for miners using CPU mining. Litecain's mining excludes GPUs and custom processors, so it doesn't rely too much on a small number of professional miners
ppcoin
ppcoin (PPC) was released on August 19, 2012, which has improved the original technology of BTC. Use proof of make and add the concept of coin age
ppcoin is a bifurcated project of bitcoin, which aims to achieve energy efficiency and maintain the best performance of the original bitcoin as far as possible. The unit price of ppcoin is US $0.22 and the total currency value is US $4 million
ppcoin does not have a fixed upper limit of money supply, but it does not mean that ppcoin has obvious inflation compared with bitcoin. Bitcoin can be compared to gold. The annual inflation rate of gold is about 1-3%. Although gold has no known upper limit of money supply, we still know that it is a reliable scarce commodity
ppcoin has two types of casting: work certificate and equity certificate. The coinage rate of working proof is affected by Moore's law, which depends on the doubling of our working proof ability. What we all know is that Moore's law will eventually come to an end. By then, the ppcoin of inflation may be close to the gold level. The annual maximum inflation rate of certificate of equity is 1%. At the same time, ppcoin's transaction costs were destroyed to fight inflation. So on the whole, the coin design of ppcoin is still a very low inflation design in the future, which can be comparable with bitcoin<
ppcoin's reward is similar to lottery, which will determine the winning probability according to the number of ppcoin held by miners. Sunny king, one of the founders, said that their design is based on a new concept of long-term energy efficiency
terracoin
terracoin (TRC) was released on October 26, 2012, with a total currency of 42 million. The speed of each block is 2 minutes, slightly faster than LTC. There is not much special in technology, similar to the proction of BTC halved every four years
however, the operation team seems to have a strong business background and may be better than other bitcoins in circulation. The development of virtual currency is getting more and more attention. Now some teams with business background will accelerate the development of virtual currency
namecoin
namecoin is a distributed domain name system based on bitcoin technology. Its principle is the same as bitcoin. The first release date of this open source software is April 18, 2011
namecoin is generated from an original block which is different from bitcoin's main trading block. It uses a new blockchain, which is independent of bitcoin's blockchain. Because it is based on bitcoin, the security, distribution, robustness, encryption and migration of domain names are guaranteed mathematically. You can dig bitcoin and namecoin at the same time
this project was discussed and proposed by bitdns, which is mainly dissatisfied with the defects of DNS. The only top-level domain name of namecoin is. Bit. It costs namecoin to register a. Bit domain name.
The essence of money is the general equivalent. In the process of the continuous development and evolution of human history, it has gone through the stage of physical money, the stage of substitute money, and then entered the stage of credit money. In primitive society, people exchanged livestock, salt, shells and other hard to get goods as general equivalents
in the long history, the emergence of metal currency makes the economic life achieve unprecedented prosperity. However, e to the inconvenience of carrying metal money, paper money became the mainstream form of money. With the rapid development of modern information technology, e-money has come into our life
if the evolution process from physical money to value symbol paper money is the first qualitative leap in the history of money development, then the evolution process from paper money to electronic money is the second qualitative leap in the history of money development
from the perspective of money form, physical money itself is a commodity in addition to performing monetary functions; Paper money is a symbolic tool of value for commodity exchange and a credit currency; Electronic currency is the proct of highly developed Internet economy and continuous progress of bank payment and settlement technology. It not only has the function of traditional currency, but also can continuously improve digital currency
At the same time, the virtual money market based on electronic information is also booming. By the end of 2014, the number of Internet users in China had reached 632 million, including 517 million registered users in the online game market and 114.48 billion yuan of sales revenue, an actual increase of 37.7% over the previous yeara huge virtual space based on the Internet has been formally formed. As a kind of virtual currency with intrinsic value, convenient online trading behavior, low transaction cost, and service providers' issuance, it emerges as the times require
first of all, from the functional analysis. Virtual currency is a kind of transaction medium in the Internet virtual space, which has the function of value scale, but the value scale of virtual currency is different from that of legal currency
using virtual currency to purchase virtual procts and services can only be within the scope specified and allowed by the issuer of virtual currency (Internet operator), and the size of this scope depends on the number of virtual procts and services. If the virtual procts and services provided by the website are large enough, the scope of virtual currency will be large
the currency value of virtual currency depends on the pricing of virtual currency by issuers. When no currency can communicate between virtual cyberspace and reality, the pricing of procts and services is still based on real RMB. That is to say, when issuers of virtual currency price their own virtual currency, they should first convert the price of virtual currency based on RMB
First, personalized virtual currency will have information function in addition to liquidity and value-added
the biggest difference between personalized virtual currency and stock market is not only the integrated pricing function with reference points, but also the distributed pricing function with reference points. This process is not completed in the virtual money market, but in the development of personalized modern services. For example, in the process of indivial auction, the bargaining process combined with frame should include not only a process of utility exchange leading to value unification, but also a process of value realization leading to value diversification. This means that virtual currency must be combined with the development of personalized information service instry. Although the stock also has certain information function, but this kind of information is subordinate, it is instry centered
in the future, virtual currency can simultaneously perform three functions of currency, stock and information card: on the one hand, it can obtain liquidity as the base currency (or exchange with the base currency); On the one hand, it has value-added function; The most important thing is that it can also add information. And this kind of information is just a kind of interface information to be completed, which needs to continue to realize its value in the service instry
secondly, personalized virtual currency will have its own cultural value orientation
in the future personalized virtual currency trading market, price level information similar to today's stock index will also be formed. But different from stock index, personalized virtual currency price index will not reflect investment value-added information, but entertainment value, cultural value, spiritual value, freedom value and personality value similar to cool value. For example, the game index may not reflect its investment value, but the value of indivial freedom
for another example, in the super girl vote, it reflects the popularity index, not the professional index. If it is not SMS voting, but a personalized IC card integrated with currency and derivative financial instruments, such as corn card and fans card, the value of the card will fluctuate with the fashion information, reflecting the freedom of personal choice. Once it is combined with the development of personalized service instry, it will form a benign interaction mechanism
thirdly, personalized virtual money market will play a role in promoting traditional instries
with the development of game instrialization and instrial Gamification, indivial freedom has been comprehensively developed, that is, personalized self realization, which will become the ultimate goal of instrial upgrading. Traditional instries, including proct manufacturing and service instries, will take the satisfaction of spiritual and cultural values as the pursuit of added value of procts and services. In the context of the development of this instry, the role of personalized information service instry in driving traditional instries may be realized through the guidance of personalized virtual money market. In other words, after the procts and services of traditional instries have reached the optimal homogenization, they will eventually find out under the guidance of the information market that those things that are cool enough will sell well, and those that are not cool enough will not sell
the future instrial development will need not only GNP type stock index guidance, but also GNH type cool value index guidance. Japan, which has put forward GNC (National cool value), is moving towards such an instrial development mode, thus following the Meiji Restoration, moving towards the road of modern instrial development. The United States and South Korea have also come to the front in this regard. China is facing the choice of the second modernization. Many "little things" like virtual currency actually contain significant information
however, this has something to do with the wantonly one-sided reports of the media, which has caused excessive panic among bitcoin players and made selling bitcoin popular
the bitcoin mining machine instry is also deeply affected by this incident. At this stage, bitcoin miners are mining at a loss, and the mining machines in the market are also ignored. Take the mainstream Avalon chip in the market as an example. As the price of bitcoin continues to fall, the price of the third generation Avalon chip has been reced from 80 yuan to 14 yuan since it was released. However, with the recovery of bitcoin price, the sales of bitcoin mining machines are booming again.
1. E-money is a kind of virtual currency. It is a kind of invisible currency based on the highly developed bank electronic technology. It uses digital pulse instead of metal, paper and other carriers to transmit and display funds, and processes and stores them through chips. Therefore, it has no physical form, size, weight and imprint of traditional currency, and the holder can not get the actual feeling of holding
2. E-money is an online currency. Electronic money is usually transmitted on the private network and processed through POS and ATM. In other words, electronic money is a large amount of money circulating online through the network in addition to the existing banks, cheques and banknotes. The storage of electronic currency needs storage equipment, the exchange needs communication means, and the computer for encryption and decryption is needed to keep its security
3. Electronic currency is a kind of information currency. In the final analysis, e-money is nothing more than conceptual money information. It is actually a special information composed of a group of numbers including the user's identity, password, amount, scope of use, etc. When people use e-money transactions, they actually exchange relevant information. After the information is transmitted to the banks that set up this kind of business, the banks can settle the transactions for both sides, so that consumers and enterprises can receive and pay each other in a more economical, convenient and faster way than the real banking system< Generally speaking, e-money can be divided into the following two types:
1. Card based e-money system includes smart card and stored value card, both of which are plastic cards with purchasing power, in which the electronic value has been paid by the cardholder in advance“ "Kaki" procts are mainly micropayments designed for retail transactions, and show the potential to replace banknotes and coins in this field
2. Based on computer software procts, this kind of procts need to install special software on the computer, so that the electronic value can be transmitted through the telecommunication network. Software based systems mainly realize remote payment through computer network, and they have the strength to replace cash and other paperless payment tools to a certain extent
through the above analysis, we understand the basic concept, characteristics and classification of e-money. In addition, we know that e-money is the medium of e-payment. We can clearly see the role of e-money in the process of e-payment through figure 1.