Pick a virtual currency

1. First of all, clearly tell the subject, not every virtual currency can be free
secondly, I don't know if the questioner intentionally refers to digital currency. If so, it means that the questioner is not clear about the relationship between virtual currency and digital currency. First, explain the relationship between them to the questioner
virtual currency refers to non real currency, which can be roughly divided into three categories:
the first category is familiar game currency
the second type is the special currency issued by the portal website or instant messaging service provider, which is used to purchase the services in the website. The most widely used is Tencent's q-coin, which can be used to purchase membership, QQ show and other value-added services
the first two types can be regarded as one, which is only a detailed difference in function. Since the end of 2016, the third type of digital currency has quietly entered our life, which refers to the digitization of currency. Digitization doesn't mean scanning. This is just like digital signature. Digital signature does not mean scanning your signature into a digital image, or using the touchpad to obtain the signature, let alone your signature. Digital currency is often mistaken for virtual currency. But virtual currency refers to non real currency. For example, when you play "Three Kingdoms" (game) or "grand Voyage", you have money, which is virtual, that is, the first and second categories we just described. Of course, the virtual money will also have its real value. For example, if you buy her / his account from another player, you can get all the virtual assets of that player, and then it will be much easier for you to continue playing. Virtual money is not necessarily digital. For example, children play games with pebbles as virtual currency
there are also obvious differences between the transaction rules of digital currency and virtual currency. In most cases, the value of digital currency is higher than that of virtual currency, and it needs more strict transaction rules to carry out transactions
the top three currencies of digital currency are: BTC eth EOS
if it is a virtual currency in the game, then there are free and paid currencies. If it is a digital currency, it basically needs to pay the corresponding money value to get the same amount of digital currency! Basically not free!

2. At present, the more reliable are bitcoin, Wright coin, Fuyuan coin, doggy coin, reborn coin and so on

bitcoin is a consensus network, contributing to a new payment system and a fully digital currency. It is the first decentralized peer-to-peer payment network, which is controlled by its users without a central management organization or middleman. From the user's point of view, bitcoin is much like Internet cash. Bitcoin can also be regarded as the most outstanding three style bookkeeping system. Old brand cryptocurrency, the ancestor of cryptocurrency<

Fuyuan coin, a new generation of cryptocurrency for application business circle, is a decentralized cryptocurrency, which is generated in the proct operation and circulation of member enterprises of global Jewelry Instry Association (similar to business points). Users can obtain certain Fuyuan coin when purchasing jewelry procts of member enterprises, and Fuyuan coin can be used for shopping in member cooperative businesses, You can also trade freely on the Fuyuan currency trading platform.

3. 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.

4. There are too many digital currencies with a total of 30 million, including 28 million Swiss Thai coins and 21 million bitcoins
the development of this kind of digital currency depends on the quantity. There are more than 30 million digital currencies. Dogcoin is a typical example. Although dogcoin is the digital currency with the second largest number of users in the world after bitcoin, its recent development momentum is not optimistic. The total number of thousand gold cards is only 3 million, but the development momentum is good.

5. Virtual currency refers to non real currency. Well known virtual currencies, such as online currency of Internet company, q-coin of Tencent company, q-point and voucher of Shanda company, micro currency launched by Sina (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), grain silver (used for bixue Qingtian game), Ming coin proced by Tiandi bank, and popular digital currencies in 2013, such as bitcoin, Leyte coin, etc Unlimited money, quark money, zeta money, barbecue money, pennies (Internet), invisible gold bar, red money, prime money. At present, hundreds of digital currencies are issued all over the world. The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum" is popular in the circle. With the development of Internet, the form of currency is becoming more virtual, and the electronic currency, which only exists in the form of electronic signal, has emerged.

6.

Gram is a general token issued by telegram based on ton blockchain system

related introction:

based on the basis of telegram, the end-to-end encryption in gram ensures that the message can only be read by the receiver. Through secret chat, our server does not store any content, you can freely write and destroy messages on two devices. The team named the official gram community as gramspace, which has the nature of sandbox and unlimited expansion

users can buy land, grow crops, build buildings and so on in gramspace. Finally, as an enhanced design of telegram, gram provides rich interfaces, which can be compatible with AR devices and 3D printing devices

extended data

the fuel token of gram system is also called gram. Users can use gram to enjoy a variety of value-added services in the telegraph space, improve the mining efficiency, and directly purchase other users' houses or plots to expand their telegraph space

gram sugars can be used to exchange gram, the token of the same name of gram platform. Gram can be used for various activities of telegraph planet, and can also be traded through the exchange

tokens usually need to be exchanged for money, used in shops, playgrounds, mass transit and other places, as a certificate to use services and exchange goods. The token is mainly made of metal or plastic

7. Bitcoin, is it that easy to dig. The power consumption and equipment cost are almost equal to 1 bitcoin.

8. Those are all deceitful. Don't buy them. They are all routine. You know, they just let you buy things together. The Ming Tombs have the most! Go out to play to protect yourself from being cheated~