What is the digital currency developed by Facebook

1. Little brother, I will do it. What kind of virtual digital currency do you want to develop? I can basically operate it. The key is cheap!

2. You can learn about AOCO super game chain, which is very popular now. AOCO is a completely decentralized super game chain. AOCO builds an organic game ecological world of distributed smart contracts, and provides a new generation of game ecological platform based on blockchain technology, which integrates multiple types of games
the tamper proof blockchain technology can solve the data forgery of traditional centralized game services and the risk of game user data leakage at one time, which makes AOCO subvert the traditional rules of the game instry, directly connect the components of the whole game ecological chain with a decentralized structure, and realize asset docking, circulation and storage.

3. God. Block the digital currency issued by the Central Bank of China. I think the significance of China's digital currency issuance is convenient and simple.

4. Yes, and a lot of them
Ruitai currency: it is a digital currency designed with the participation of Sha Qian, a well-known digital currency scholar in China. It is an asset certificate, and credit endorsement is a medical equipment asset and part of the shares of Sha Qian Tong
Yuanbao coin: it was developed by Yuanbao team in China. Yuanbao coin is a relatively successful currency in China, and many related projects have been carried out
Qianjin card: developed by Qianfeng team in China, it is mainly used in Qianfeng mall and overseas luxury purchasing market.

5. Digital currency platform development needs professionals to be responsible for, but now digital currency technology has matured, the difficulty of development has become very simple, has become a standardized technology. Today's digital currency technology is not the highlight, but the application scenario of this kind of digital currency
the birth and popularity of bitcoin all over the world depends on the concept, which is in the foreword of the times. However, bitcoin has been preconceived and cannot be replaced by other digital currencies. Although some counterfeit currencies were popular for a while later, they slowly went down in the end, only bitcoin strengthened. Puyin is another shortcut, as a standard system of digital currency appears, behind the endorsement of related tea assets, its value is recognized by the society.

6.

Blockchain is the latest computer technology, the core is decentralized, distributed accounting. Digital currency is based on the underlying technology of blockchain. It can be said that without blockchain, there will be no digital currency. But without digital currency, there may still be blockchain. It's just that blockchain will be so hot, and it can't be separated from digital currency

in the future, digital currency will continue to develop. We can take advantage of the early stage to enter the digital currency and hoard some valuable digital currencies, such as Xunlei's playcoin

but at the same time, there is an unavoidable problem of digital currency, which is the lack of real economy support. At present, only a small part of the more than 1000 kinds of digital currencies circulating in the market rely on the economic support of miners. In other words, digital currency may be worth ten thousand yuan in the first second, but it may not be worth a minute in the second

therefore, before you make digital currency, you must investigate, analyze and choose carefully, so as not to cause losses to yourself

7.

Core password is used to protect national top secret, secret and secret information, while ordinary password is used to protect national secret and secret information

core password and ordinary password are used to protect state secret information, effectively guarantee the security of central government orders and military orders, and build a password barrier for safeguarding the sovereignty, security and development interests of national cyberspace. According to the law of the people's Republic of China on keeping state secrets, state secrets refer to matters related to national security and interests, which are determined according to legal proceres and only known to a certain range of people within a certain period of time According to the different protected objects, the code law divides the core code and ordinary code

extended data:

the core password and common password part specifies the requirements for the use of core password and common password, the security management system, and a series of special security systems and measures for the state to strengthen the work of core password and common password

in the part of commercial password, it stipulates the commercial password standardization system, testing and certification system, market access management system, use requirements, import and export management system, e-government e-authentication service management system and commercial password in-process and post supervision system

8. Seer's development team is one of the few teams in the world that have the ability to develop graphene substrate. It is said that the core developers are people who talk and laugh with BM. At present, the main chain with complete market forecasting function has been online, and DAPP has let users play. There are few teams with such strong technical strength in China, and most of them are still frying the concept and air. It's hard to know whether something is good until you use it. SEER has a high concurrency of 3300tps and an average confirmation speed of 1.5 seconds. It has the possibility of large-scale commercial use. It can kill other public chains including ethereum.

9.

Why develop digital currency? From the perspective of the central bank, there are six advantages:

first, to improve the convenience and transparency of economic transactions; second, to rece the high cost of the issuance and circulation of traditional paper money; third, to better support economic and social development; fourth, to help the comprehensive realization of Inclusive Finance; fifth, to rece money laundering, to promote the development of the economy and society Sixth, improve the central bank's control over money supply and circulation

steps of digital currency development:

the first step,

first, we need to download the source code of a blockchain system from git, such as choosing the backbone code of bitcoin to download the relevant source code

At the same time, prepare the corresponding compiling environment (c + + is recommended in Linux) and install the corresponding development environment and tools

the second step and

code all need to be compiled, so you need to prepare the compilation environment and tools, download the environment compilation tools, configure

system environment variables, QT environment and other files, and compile commands are described in detail in the files in ITC source code

however, the construction of the system and development environment, program compilation and other processes are cumbersome, so it is not recommended for ordinary users to make their own. For developers, it may take 2-3 days to install and configure for the first time

the third step,

take bitcoin development as an example, it is the development environment of Q. after downloading the source code and configuring the environment, open the source code of the bitcoin core in qtcreator, configure relevant files and compilers, and start to try to compile the client of the bitcoin core

Step 4,

transform into your own digital currency, open each source file, find the corresponding local adjustment parameters, such as adjusting

the number of coins in each block, the total output, the adjustment difficulty, and so on. Then the most critical point is to change the name to your own currency

name as you want, and don't forget to replace the related icons in the resource folder. If all goes well, after re compiling, your new coin will be invented successfully

for the development of this digital currency, the technology is relatively professional, so it is better to have a professional team to assist

framework for digital currency development:

1. Build Ethereum private chain test environment and public chain node environment configuration

2. Ethereum transaction and confirmation principle

3. Ethereum JSON RPC interface

4. Ethereum transfer and withdrawal principle

5. The server connects Ethereum public chain interface, and its own server stores business data, Public chain storage transaction anonymous data

6, private key security processing

the following is the development code example:

for example, the common digital currency wallets in the market are:

app class: kcash Imtokenweb: myethereumwallet Google browser plug-in: metamask

one of the most commonly used is imtoken

blockchain transaction technology concept:

let's take a look at how blockchain transaction is handled with bitcoin as an example. In order to send a certain amount of bitcoin to another wallet, you need the following information: the address to send the funds to your wallet, the amount of cryptocurrency you want to send

the ID of the recipient's wallet

each transaction is signed with a unique confidential private key. Once the payment is signed by the sender, it becomes publicly available. The transaction still needs to be confirmed so that the payee can get the money. In order to confirm the transaction, it is necessary to generate a new chain block

these blocks are generated by complex mathematical calculation to find the unique key. It takes 10 minutes to create a new block, and the person who finds the key gets a certain amount of coins as a reward. Once a new block of the chain is created, it is not possible to remove it from the database or change the information in some way. Therefore, blockchain transaction is final and irreversible

three core advantages of digital currency:

first, digital currency is a fair currency

digital currency has no specific issuing institution, is not issued by a country, only depends on a specific algorithm, which means that digital currency can not be manipulated by manipulating the number of issues, so digital currency is a free, non-state currency

we can see that there are many countries that directly recognize the virtual currency, so if there is a demand, it needs a trading platform

many investors who want to build a virtual currency trading platform now, why can't they go to these areas to build a trading platform? Building a virtual currency trading platform is a good business opportunity, isn't it

Second, the security factor of digital currency is higher.

although the emergence of paper money facilitates the transactions in our daily life, there are risks of being stolen and received. Although e-money can avoid these risks, there will be new problems such as theft and swiping

digital currency can avoid the above problems. And broadcast every transaction record on the network. Yes, all nodes save all the currency circulation information, so that any node can easily find the currency circulation before the transaction

Thirdly, the transaction of digital currency can realize anonymous transaction. Although you can query the flow information of each account according to the local complete transaction records

but we can't know who the owner of this account is, and no one has the ability to manipulate the digital currency on other people's accounts, which protects the privacy of users

if you also hold trading digital currency, foreign exchange gold, crude oil, contract Futures: