Development of one meter virtual currency system

1. In addition to bitcoin, there are many other virtual currencies in the virtual world< Liteoin (LTC) was released on October 7, 2011, and is currently the most valuable counterfeit currency, 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

in addition, Q currency, Shanda currency, starting point currency and various online game currencies are also virtual currencies.

2. No, myth came into being in the primitive age when proctivity and people's cognitive ability were very low. At that time, human consciousness began to develop, but their thinking ability was very simple. Primitive people could not scientifically understand and explain the nature and natural phenomena as well as human beings themselves. They could only imagine and fantasize with their narrow life experience

3.

Besides human beings, is there any civilization higher than human beings? I believe everyone has heard of the theory of geocentric man. In order to find geocentric man, the former Soviet Union once spent a long time on archaeology and even wanted to dig through the earth. But in the middle of the project, they suddenly found something strange, so they stopped the project, What happened when the Soviet Union g through the earth

Over the years, the legend about geocentric people has never stopped. Geocentric civilization is like the story of Peach Blossom Land. They live in an immortal world. If geocentric people exist, they don't seem to have affected human development. Therefore, we should not worry too much about geocentric people's threat to human beings, About the study of the earth, human understanding is not thorough enough, let alone expect that human beings can find the figure of geocentric people in the future. After reading this article, do you think there is still a civilization on the earth that is the same as human beings

4.

bus line: No.192 → Metro Line 1, the whole journey is about 21.2km

1. Walk about 250m from Hangzhou north bus station to north bus station (Moganshan Road)

2. Take No.192, pass 9 stops, and reach Wulin Square Station

3. Walk about 240m, and reach Wulin Square Station

4. Take Metro Line 1, pass 9 stops, and reach passenger transport center station

5 Walk about 360 meters to Hangzhou passenger transport center station

5.

After the rapid rise of science and technology, the pace of human exploration of space is more urgent. For many years, researchers have been convinced that there may be different civilizations in the depths of the universe. The origin of life itself has hidden mystery. The universe is so vast that it seems hard to accept that there is no other planet without life. Fortunately, Kung Fu is worthy of those who are willing to make progress in the field of space. It's just that we have never found any trace of alien creatures. What's the matter

In Snowden's disclosure, he said that the technological level of geocentric people is much higher than that of human beings, and they are much stronger than us. Some scientific researchers believe that the existence of geocentric man in the earth itself is a fallacy. How can it be proved. What's your opinion on this? Do you think there are really geocentric people inside the earth? If so, is it really the lost Atlantis

6.

Since human beings conquered the earth, they began to pay attention to looking for extraterrestrial civilization. For so many years, they have not found any traces of extraterrestrial life, which makes many scientists particularly depressed. So they turn their eyes back to the earth. Since the Soviet Union's plan to dig through the earth, there have been many conspiracy theorists on the earth. These conspiracy theorists firmly believe that there is a huge space inside the earth, and there may be other civilizations in this huge space. They even insist that Antarctica is the entrance to the earth's interior, and have proced corresponding evidence

then in 2013, a man named Snowden published a document on the Internet about the existence of smarter human beings inside the earth, making people believe that there must be other creatures inside the earth