Virtual currency on mobile phone

2. Now look at the virtual currency, there are only a few websites. There are basically no easy-to-use apps, but most of these virtual currencies are cutting leeks. The rich big customers will not play like this. Moreover, the investment risk of virtual currency is too high, so it is not recommended to enter.

3.

Virtual currency wallets and local wallets are wallets specially used to store virtual currency

difference: local wallets are installed on their own computers or mobile phones, while online wallets encrypt the private key and put it on the server

personal computers may be implanted with Trojans; The wallet server also has the risk of being attacked by hackers, and the encrypted private key is cracked. Server security is better than personal computers, but it is easier to attract hackers' attention

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virtual currency Wallet:

there are three main types: Online wallet, client wallet (mobile client, computer client) and hard wallet

1. Online Wallet: it refers to the operation of virtual currency relative to wallet by users in the form of network; The main form is website, which users can visit through computer and mobile phone

2. Client Wallet: it is an installation software, which needs to be downloaded to the computer or mobile phone, and can only be used after installation; This is the type of mobile app wallet that I just mentioned

3. Hard Wallet: it is similar to the wallet in the form of U disk, which is a real type of wallet

local Wallet:

the English name of local wallet is local wallet. Local wallet is to store private key and transaction data in local terminal, such as computer, mobile phone or other local devices; It refers to the storage location of the key, and its concept is independent of online wallet and offline wallet

the English name of local wallet is local wallet. It is one of the terms related to bitcoin wallet in blockchain. Local wallet is to store private key and transaction data in local terminal, such as computer, mobile phone or other local devices; Local wallet refers to the storage location of key, which is independent of online wallet and offline wallet

the local wallet is installed on your own computer or mobile phone, while the online wallet is encrypted and put on the server. Personal computers may be implanted with Trojans. Hackers may steal your wallet files and record your wallet password; The wallet server may also be attacked by hackers, and the encrypted private key may be cracked. Server security protection is better than personal computers, but it is also easier to attract hackers' attention. In terms of security, I think these two types of wallets are similar

to enhance the security of local wallet and online wallet, it's better to set a more complex password, and don't forget it. Both local wallet and online wallet are easy to use and easy to use. Because online wallet is not limited by clients, it is easier to use than local wallet. Bitcoin core, Bitai wallet and bitpai wallet all belong to this category

local Wallet_ Network

4. 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.

5. No, apple system charges a 30% service fee for virtual currency transactions, so many companies don't use it.

6.

Blockchain technology is popular in the market because it can rece intermediate links, rece fraud caused by data consistency, improve business efficiency and speed, rece the risk of counterparties, increase revenue and save costs

in-depth study of its implementation principle, blockchain uses cryptography algorithm, specially designed data structure and multi-party consensus algorithm to solve the consistency, reliable storage and anti tampering problems of multi-party transaction records by machine algorithm, which has a strong natural relationship with electronic data storage

first of all, the electronic contract signing records are stored in the shared account book jointly maintained by multiple parties, which can not be tampered with, denied, and of course will not be lost

secondly, electronic contract text and electronic contract elements are encrypted, including electronic contract participants. Only participants can decrypt and view the data to protect the privacy of the parties

thirdly, the machine strictly implements the pre-defined rules (smart contract), and no longer only relies on a single agreement with a third party. KYC service based on blockchain automatically checks and verifies the validity and identity of certificates, and ensures the authenticity of participants' identities on the basis of privacy

7. This is necessary, and Apple store's review of virtual currency is relatively strict. Before bitcoin related software was launched in Apple store, it was very difficult. However, it is OK to exist in the form of integral, and it is feasible
for example, the token of decent, a decentralized content publishing platform, should be OK.

8. Yes, asset securitization. Issue a security with your mobile phone and transfer it. Whoever buys it will take your mobile phone

9. You need to download a specific app, preferably a large app platform, otherwise there may be losses. In addition, the price of bitcoin is very high now, and the investment risk is very high, so you should choose carefully

10. Expiration date fall in love with the song you sing when you get married