Virtual currency Teaching

1.

virtual currency is the currency used for electronic circulation. Now the scope of virtual currency is very large, including q-coin, bitcoin and so on. With the development of digital currency, virtual currency is becoming more and more abundant, which may become the mainstream in the future. For example, BTC, EOS, bcbot and so on are not only virtual currencies, but also algorithms, landing projects and technologies

virtual currency is mainly issued by online game service providers to purchase game props, such as equipment, clothing, etc. But at present, the use of virtual currency has gone far beyond this category. Virtual currency can be used to buy game cards, physical objects and download services of some movies and software

extended data:

real risk

as the proct of e-commerce, virtual currency has begun to play an increasingly important role, and it is more and more connected with the real world. However, with the growth of virtual currency, the relevant laws and regulations are lagging behind, which has laid many hidden dangers

fraud

the private transaction of online virtual currency has realized the two-way circulation between virtual currency and RMB to a certain extent. The activity of these traders is to buy all kinds of virtual currencies and procts at a low price, and then sell them at a high price to earn profits. With the increase of such transactions, there are even virtual mints. In addition to the virtual currency provided by the main company, there are also some people who specialize in "virtual coin making" to obtain virtual currency by playing games and then resell it to other players

Taking Wenzhou as an example, there are about seven or eight such "virtual mints" with four or five hundred practitioners. This not only creates a bubble for the price of the virtual currency itself, but also causes trouble for the normal sale of the issuing company. It also provides a platform for selling and collecting money and money laundering for various cyber crimes. p>

impact system

in modern financial system, the issuers of money are generally central banks, which are responsible for the management and supervision of money operation. As the equivalent exchange goods used to replace the real currency circulation on the Internet, the virtual currency on the Internet is essentially the same as the real currency. The difference is that the issuers are no longer central banks, but Internet companies

if the development of virtual currency makes it form a unified market, each company can exchange with each other, or virtual currency is integrated and unified, and all of them are based on the same standard and price, then in a sense, virtual currency is currency, which is likely to form a threat impact on the traditional financial system or economic operation

reference: network virtual currency

2. Users can buy bitcoin, and at the same time, they can use computers to do a lot of calculations according to the algorithm to "mine" bitcoin. When users "mine" bitcoin, they need to use the computer to search for 64 bit numbers, and then compete with other gold miners by repeatedly solving puzzles to provide the required numbers for the bitcoin network. If the user's computer successfully creates a set of numbers, then they will get 25 bitcoins. Due to the decentralized programming of the bitcoin system, only 25 bitcoins can be obtained every 10 minutes. By 2140, the maximum number of bitcoins in circulation will reach 21 million. In other words, bitcoin system is able to achieve self-sufficiency, resist inflation through coding, and prevent others from destroying these codes

warm tips:
1. According to the notice and announcement issued by the people's Bank of China and other departments, virtual currency is not issued by monetary authorities, does not have monetary attributes such as legal compensation and compulsion, is not a real currency, does not have the same legal status as currency, and cannot and should not be used as currency in the market, Citizens' investment and transaction of virtual currency are not protected by law
2. Before investing, it is recommended that you first understand the risks existing in the project, and clearly understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market
3. The above explanation is for reference only. Investors should not use such information to replace their independent judgment or make decisions only based on such information, which does not constitute any investment operation

response time: February 5, 2021. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
https://b.pingan.com.cn/paim/iknow/index.html

3. Share source area video network, bitcoin play as follows:
1, bitcoin trading, you have to find a dedicated online trading platform for bitcoin. With this trading platform, we can buy and sell bitcoin freely on the trading platform
2. As long as you have time and pay attention to the real-time market of bitcoin, you can learn to play bitcoin. In fact, this method is very simple, that is, buy low and sell high
3. Bitcoin can be cashed and converted into the currency of most countries. Users can use bitcoin to buy some virtual items, such as clothes, hats and equipment in online games. As long as someone accepts it, they can also use bitcoin to buy real-life items
Introction to bitcoin:
1. The concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software was designed and released, and P2P network was built on it
2. Bitcoin is a kind of P2P digital currency. Peer to peer transmission means a decentralized concept of bitcoin, which was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software and P2P network are designed and released
3. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
4. Unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of currency circulation
5. The decentralized feature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions
6. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to 21 million< On February 26, 2014, Joe Manchin, a Democratic senator from West Virginia, issued an open letter to a number of regulatory authorities of the US federal government, hoping that relevant institutions would pay attention to bitcoin's current situation of encouraging illegal activities and disrupting the financial order, and require that actions be taken as soon as possible to completely ban the electronic currency
2. China has banned the issue and use of bitcoin
share the source video.

4. The first time you fry money, you must be careful. If you don't know anything, don't buy it indiscriminately. Accumulate some experience and buy a stable mainstream coin or high-quality token, such as bitcoin BHT and BHT, which are reliable. You can start to have a try!

5. You can try to fry some platform currencies and mainstream currencies with relatively low prices, such as wxr / EOS, or ask people who know you and have been fried many times to bring them

6. There are no more than the following kinds of people touting virtual currency:
the first kind is the big guy who pretends to be confused. They boast about the greatness of virtual currency, in fact, just to sell their own coins, and then make their wealth more and more. This is the same reason that Mimeng's articles incite emotions. It's just to let people read more of her articles to sell advertisements. As for whether it is true or not, who cares
the second kind of people is the media outside the circle. In fact, they don't know anything. The purpose of their blowing together is to bring traffic. It's all for sale. It's just different. They follow together to brag, will have more traffic attention, advertising can be more valuable. If the business is not good, change the vest and continue. That's what we media and finance are doing now. True or false is not so important, the important thing is to bring them income, which is enough
the third kind of person is the leek of coin circle. In fact, they don't have the ability to think independently. They are superstitious in aura. They watch the big guys and the media blow, and then they really believe in it. They also blow,,,, and then they are the ones who take over. It is commonly known as "no brain blowing, no brain blowing". It lacks the ability of independent thinking, and does not carefully analyze things. It is respect to blow first and respect to blow first. Blind, therefore, only then dish's life.

7. I am a professional developer of virtual currency. Now APP is in good market and has a high income. Old fellow iron, do you want to build a look?

8. Symmetric key algorithm means that both encryption and decryption use one key. The encryption methods we usually use are symmetric encryption, such as WinRAR encryption, bitcoin QT encryption of the private key file is also using the symmetric encryption algorithm. The commonly used symmetric encryption algorithms are AES, DES, RC4, RC5 and so on. Symmetric encryption requires users to set relatively complex keys to prevent brute force cracking
encryption command: encrypt wallet yourpassword
decrypt wallet command:
walletpassword yourpassword timeout
Change Password command:
walletpassword exchange oldpassword newpassword
method 2: use AES encryption provided by blockchain. Blockchain provides users with private key file encryption service based on AES algorithm. Users can download the encrypted file and save it properly. The third method is to encrypt the key file with TrueCrypt, which is also recommended by the editor. TrueCrypt is open source and free, with high software maturity, and supports two factor authentication and whole hard disk encryption. In addition, FBI personnel have suffered losses on TrueCrypt, so they have a good reputation
TrueCrypt's reputation
TrueCrypt only supports symmetric encryption algorithm. Users who use it must keep the key in mind. If you forget the key, no one can recover your encrypted files<
TrueCrypt official website
TrueCrypt uses documents
uses asymmetric encryption method to keep private key
asymmetric encryption method uses public key and private key to encrypt files. Users can encrypt files with public key and decrypt files with private key. Common asymmetric encryption algorithms include RSA, ElGamal, ECC and so on. The advantage of asymmetric encryption is that the complexity of the key is generally very high, which can effectively prevent violent cracking. The disadvantage is that there is a certain threshold, which is not suitable for ordinary users. Method 1, indivial users can consider using RSA to encrypt. First, you can create a public key and a private key. Click here to generate the key. After keeping the public key and private key properly, you can encrypt and decrypt with the public key. Click here to encrypt and decrypt
RSA public key and private key generation process
method 2, more mature asymmetric encryption software, we can use PGP (pretty good privacy) tool to encrypt files. PGP encryption allows each public key to bind to all information of a user. Compared with RSA, the function of PGP is more perfect and reliable. However, with the upgrade of Pgp, new encrypted messages may not be decrypted by the old PGP system, so users should be familiar with PGP settings before using PGP. There are many PGP encryption tools on the Internet, so the editor will not list them<
Introction to Pgp in Wiki
PGP online encryption and decryption system PGP command FAQ advanced method to keep the private key
the above ways to keep the private key are very common, and experienced attackers may still get the user's private key file. For more advanced private key storage methods, please refer to the advanced teaching content of bitcoin in the future.