Security of private key in Blockchain

How to protect the security of the cryptosystem, private key takes a great role in their life cycle, which means the bedrock of the trusted Blockchain. As the proverb goes, all encryption without key protection is rogue.

There are a few link in Blockchain private key, including the generation, storage, usage, recovered, destroy, update and so on.

• The generation security of private key

The private key of Blockchain is the asymmetric algorithm, their self quality of private key has determined the quality of nonce for the private key.

Nonce is the cornerstone of information security system based on modern cryptography, and the security for the whole system is completely rely on the generation efficiency and quality of the nonce. The core of the high quality nonce is the unpredictability. And for the nonce, it can divide into two types: pseudo-random and really-random.

A pseudorandom process is a process that appears to be random but is not. Pseudorandom sequences typically exhibit statistical randomness while being generated by an entirely deterministic causal process. Such a process is easier to produce than a genuinely random one, and has the benefit that it can be used again and again to produce exactly the same numbers, which is useful for testing and fixing software.

A reallyrandom which is based on the design of hardware, according to the facters of outside temperature, voltage, electromagnetic field, environment noise, the unpredictability of random generation has been improved.

• Secure storage of private key

The storage and usage of private key can be divided into soft implementation and hardware implementation.

Soft implementation means the way for storage and usage in the form of soft. When a new private key generated, it can be stored in user terminal or managed in server  as a file or character string. When needed, it can be obtained through the watchword from the relating plaintext into the memory, then finish the computing of private key by CPU. However, this way still has various security risks.

Hardware implementation is relying on the special cipher security chip or cryptoequipment, which owns the mechanisms of physical protection, sensitive data protection and key protection, to ensure the generation of private key by the special hardware. The private key should not be appeared outside the cryptoequipment in the form of plaintext.

• Blockchain VS PKI/CA

Even the blockchain technology is just started, the  Blockchain security architecture based on modern cryptography has developed several decades. For the protection of the private key in the life cycle, PKI/CA using the soft implementation as well sa Blockchain. As for the private key security of Blockchain, Blockchain industry can draw lessons from PKI/CA, using the industry chain to enhance the security of private key, then to construct a perfect security system.

Shuqin tech has developed an open middle tier, by fusion up the technical advances for blockchian and overcome the capacity issue of public blockchain we provided a “Blockchin+” technical solutions, and established a trustworthy electronic certificate service platform - Baoquan.com. They also have the strong security technology for data security and are still working on the exploring for more Blockchain solutions.

For more solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Q1 2017 Data Analysis of Blockchain

 Nowadays, the Blockchain space takes a large part in life. For the first quarter of 2017 , initial coin offerings, or ICOs, continue to gain interest despite unclear regulatory guidance from agencies like the US Securities and Exchange Commission (SEC). Bitcoin and Ethereum still occupy a large part in the industry market. And many projects that based on public ethereum have been launched in February, 2017.

From above chart, we can see Bitcoin’s dominance over cryptocurrency market cap falls under 70% as price rise outpaced by smaller assets.

Meanwhile, Ether most heavily traded with Bitcoin, and USD continues to rise.

From the Bitcoin and Ethereum Sentiment Survey, 94% feel positive about the current state of ethereum, almost double the amount who feel positive about the state of bitcoin.

ICOs and new token sale structures continue to evolve with limited guidance from industry groups, specialized legal and advisory groups.

From above chart, we can see the future appears more centralized for Bitcoin mining, while Ethereum leans towards decentralization.

And the young males using cryprocurrency primarily for cross-border payments.

In China market, the projects including Largest VC deal, Bitfury, and ICO, Qtum and so on. The PBoC investigated the operational policies behind numerous domestic bitcoin exchanges, causing freezes, fee increases and drastically cut volume. And it issues public warnings after meeting with major domestic exchanges around operational and regulatory policies.

Further, the industry saw the People's Bank of China, the country's central bank, take on a more active role as a watchdog of the domestic bitcoin exchange ecosystem. This lead to a months-long user balance withdrawal freeze and a shift in the makeup of the world's trading volume.

Shuqin Tech has prepare for the big data transaction based on Blockchain with the trusted electronic certificate. And they also have various Blockchain solutions for different industries. For more solutions : https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Push Blockchain in China’s Central Bank

Recently, Chinese banks have been devoting themselves into Block chain research on the application of digital currency and e-currency. While risk control and security measures are all important, which rely on technological direction With the prompting of government, more and more banks start using the advancing technology —Blockchain through greater transparency , then to hit the fraud from the financial sector.

For the practice of People’s Bank of China(PBoC), they are trying to incorporate digital currency wallet attributes into the existing commercial bank account system so that electronic currency and digital currency are managed under the same account.

Digital currency should be managed in compliance with the standards on wallet design specified by the central bank. The wallet is similar to a safe box which is managed by the bank based on agreement with the customer. All the attributes of digital currency and cryptocurrency would be preserved to enable customized application in the future.

The approach would not lead to the commercial banks being channelized or marginalized because customers and their accounts are still managed by the account bank. Unlike money transfer, digital currency does not completely rely on bank accounts and the ownership of digital currency can be verified directly by the issuing bank, so as to realize peer-to-peer cash transaction via digital currency wallet on user's end.

And the digital currency research of the people’s Bank of China has been listed for a period of time, they also have the confidence for the circulation of regular paper money with digital currency in the future. For the ordinary people, they can choose to change real cash or digital currency when going to the bank to withdraw money.

Shuqin Tech has cooperated with the commercial banks for business. They also keep promoting the development of Blockchain technology in the bank sector. For more solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Blockchain into Banks: Training course for staff

The Blockchain training course was designed by the CEO Gao Hang of Shuqin Tech for the bank staff on June 23, 2017.

As the founder of Shuqin Tech, Gao Hang started the research working on Blockchain and digital currency since 2013. He also is a member of China Blockchain application research centre, as well as a committee of National Internet financial security technology commission. And he has offered these courses for many times for the financial enterprises like banks, securities, insurance and so on.

During the course, Gao Hang started from the paper of Satosjo Nakamoto, called 《Bitcoin，A Peer-to-Peer Electronic Cash System 》. Under the background of Internet, how to create a electronic currency without the credit intermediary? And how to distinguish which one file is true, which one is false? Even large amount of people may worry about the falsification of data.

First of all, combined data with time. Satosjo Nakamoto created a data structure chain, divided data into blocks and each block can be connected by cryptography. When you try to change the time, you should update the whole chain, which has increased costs of tempering data. Then the chain structure will be distributed by P2P network, to form the public distributed ledger. At last, he also designed a beneficial incentive mechanism for the Blockchain network, to promote the development of Blockchain.

Then Gao Hang introduced the application of Blockchain+Bank. According to the characteristics of the decentralized structure, immutability and traceability, Shuqin Tech has provided the evidence attestation service for banks that based on Blockchain. And store the operate recording and data transaction recording on the chain, at the same time, access to the expert evidence centre to realize the transform from technology credibility to judicial efficiency. In addition, Shuqin Tech also keep working on big data field, applied the traceability management and cryptography authorization mechanism into bank scene.

Finally, Gao Hang introduced the recent development of Blockchain in Hangzhou. There are 4 Hangzhou Blockchain startups in the top 10 value company, which means a good social atmosphere of Blockchain in Hangzhou, second to Beijing. With the development of Blockchain and new financial technology, this underlying technology will gradually evolve into the underlying network for the trusted value.

For more solutions：https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

What can Blockchain do for the fake new sites?

In the Internet era, fake news has  become a cancer in the society, growing from an isolated but malignant tunour into a raging, mortal threat. And what is the fake news?

For the most fake news, it can be divided into three kinds.

• First, false information deliberately circulated by those who have the improper purpose to make money or other use. So this is caused by the original.
• Second, false information that is circulated by journalists who do not realise it is false. Hence, the errors of fact happened during the circulation.
• Third, the simply news that some people don’t like to acknowledge, and wish to silence. And they would call the news faked.

The first kind of fake news - deliberate lies - has been energised by the viral power of social media. The co-creater and inventor of Ethereum, Vitalik Buterin using the Block number to proof his alive, then the fake news about the death for traffic accident betrays itself.

From this way, the special number become the proof of Vitalik. So how it works?

It should start from the Block Explorer. The production of each block is unpredictable, the whole processing can be tracked on Blockchain. Hence, there is no one can predict the number of the next block before it has been explored. And Vitalik using this point to hit hack at the fake news what attracted public attention.

For another way, Blockchain is on the right track of news. If all the news can be recorded on the Blockchain, then the circulation of news would be traceable. Therefore the original and whereabouts of the news would be tracked on the chain, the fake news producer has to shoulder the responsibility of his mistakes.

Shuqin Tech is a Blockchain company for the trusted electronic certificate. All the e-data on the chain is always together with such certificate which owns the force of law. They are also working for the Blockchain solutions for various industries.

For more solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

How One University Used Big Data To Improve managerial skills

Whenever you surf the Web, sophisticated algorithms are tracking where you go, comparing you with millions of other people. They're trying to predict what you'll do next: Apply for a credit card? Book a family vacation?

At least 40 percent of universities report that they're trying some version of the same technology on their students, according to several recent surveys. It's known as predictive analytics, keeping students on track to graduation, recording all the information in a system,  then to help university to improve managerial skills.

Recently, Block chain is becoming more and more hot, gradually applied in varied industries. For the characteristics of immutability and traceability, all the data resource would be recorded on the chain for the real time query. Hence, using Blockchain technology to set up the management platform can solve the question for sharing. Then combined with outside resources,  reach to a all-round analysis for students.

As a Blockchain sharing platform, the convenient data sharing is the core of such system. All the data flow would be together with the trusted electronic certificate, which owns the legal compliance for each data. At the same time, the data transfer service can be provided for inside and outside. For the graduates, the ability of information  extraction will be improved, they can get the related information that they required and provide these to company or university for the next life step. All in all, it also push the university to improve their own managerial skills, and bring convenience to students and then to the society.

Shuqin Tech has set up the Blockchain big data transaction platform for data sharing. It can provide such service for any fields that is appropriate. For more solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

A PUSH TO GET MORE CONVENIENCE INTO PROJECT MANAGEMENT

According to a study conducted by Israel's president, Reuven Rivlin, Israeli Arabs are only 0.3 percent of mid- to senior-management at Israel's leading companies. And it is very difficult to find the right management profiles within the Israeli Arab community.

Program organizers also hope increasing corporate diversity can help lift up Israeli Arab communities. Improving the management ability of enterprises is essential for their future. A weak management system which makes the limited to the development of enterprises. Of course, the situations also exsit in many countries,  the most efficient method to perfect the project management is to introduce the advanced technology——Blockchain.

l  Recording project info on Blockchain

Blockchain has combined the distributed technology, cryptography and game theory to realize the reality and uniqueness of the electronic data. Meanwhile, using the timestamp technology to reach the immutability, then to ensure all the recordings can be traceability.

l  Blockchain internal transparent coordination

With the characteristics of openness, transparency and immutability of the chain data, members from the internal departments would communicate on Blockchain to the trusted collaborative. All the recording can be traced, and all the processing with separated rights and duties.

l  Project management evaluation

For enterprises, all the processing of the project would be recorded on the chain, the project members can participate in real time, then reach to the transparent assessment, finally to strengthen the benefit for enterprises.

l  Platform construction for flexibility

Combined with Blockchain technology, enterprise can set up the project management platform to meet the requirements, further to ensure the security for the flow data.

For more Blockchain solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Supply Chain Finance: Combined Big Data with Blockchain

What application for Big data in the supply chain finance?

For credit risk control:

l  Credit rating: Using big data to a credit analyst for the target customer, which can be applied in short-term loan approval, as well as in accurate financial and logistics service loans.

l  Early warning: Using big data to industry analysis and price fluctuation analysis, adding the control process and predict process for the accurate financial and logistics service.

l  Information interaction: Using big data to the information interaction, business collaboration and transaction transparency, from the real time management to reach the effective monitoring.

l  Operation process: Using big data in finance, to build the integrated platform with electricity business, finance and logistics, for a confluence of electricity data to improve the mortgage rate.

What can Blockchain do ?

For the supply chain,  all the information for manufacturers, suppliers, distributors, retailers, logistics can be recorded on the chain. The logistic chain can be combined with Internet technology, then to simplify the work. By this way, Blockchain can record and share the latest progress of the supply chain for real time, to achieve the quality and transportation of production orders, then to realize the chain visibility transparency. The transparency for management can reduce the inventory cost, provide timely support for enterprises  and respond to emergencies, but also for the convenience for the auditing.

More solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life,   please contact us: js@baoquan.com

Shuqin Tech: As a member of China Computer Users Association —— Information Technology Auditing branch

Recently，as a member of China Computer Users Association, Zhejiang Shuqin Tech has become the member unit of Information Technology Auditing branch.

The Information Technology Auditing branch received approval by the 7^th Six National Council through China Computer Association on April 22,2016.It aims to build and share the research and practice result of auditing theory and the risk control of formation technology. Then to improve the professional level of auditing officer and organization, further to paly an important role in the information technology governance of the related industry bodies.

China Construction Bank, as the unit of director of information technology auditing branch，for the first board.There are 8 units as for the unit of vice directors, including Industrial & Commercial Bank of China, Bank of China, Bank of communications, Bank of Jiangsu, Qianhai micro public bank, Galaxy Securities, Agricultural trust fund clearing center, China Research Institute of management(Beijing) International Information Technology Research Institute. 

Shuqin Tech will work together with the member bodies of the Information Technology Auditing branch, playing the roles on the IT government and information auditing by exploring the blockchain technology.

In addition, the chief scientist Wang Maolu of Shuqin Tech was employed as the senior research fellow for China Research Institute of management(Beijing) International Information Technology Research Institute, both parties will developer on the financial cloud platform that based on Blockchain, for the trusted data transaction platform and trade standards.

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Why digital currency enterprise eye billions valuation

Digital currency , a hot topic in nowadays society. Coinbase CEO Brian Armstrong recently declared that the digital currency industry was having "its Netscape moment."  Like the pioneering browser that helped trigger the Internet revolution, cryptocurrencies such as bitcoin are on the verge of wide-scale adaptation, he argued.And Coinbase hs already raised $117 million from investors and eyed $ 1 billion valuation.

How these currencies work?

 A user installs an electronic wallet on either a computer or mobile device, thus creating an address that enables the transfer of money. There are three ways to get the cryptocurrency: buying them on an exchange, accepting them as payment or creating new coins, known as mining -- where you solve a math problem and get paid in these digital denominations. 

At the same time, more and more developers are making its services more accessible to mobile. The app will allow users to trade digital currency and transfer it. An online marketplace for professional services, also abstract more and more users.

When digital currency meet Big data, what will happen?

The computing mode of big data can be divide into two forms: batch computing and stream computing.

l  Batch computing

Store the data first, then to the centralized computing for the stored static data, which can be applied in such scenes with low requirement for real-time but owning high accuracy and full-round.

l  Stream computing

It is impossible to confirm the right time and order, so there is no way to store the data. And the flow data would be dong the real time computing in the later internal memory, which can be applied in such scenes with high requirement for real-time but low requirement for accuracy.

From the space, construct the digital currency running distributed cloud picture, designing the scale, the location, the time, as well as the space annotation, to form the real time cloud chart and help to analysis the accuracy space and main put on space.

From the system designing, paying attention to the robustness and scalability for the infrastructure of big data. According to the division of data layer, interface layer, service layer and apply layer, it need guarantee the security, flexibility and openness for the data collection, analysis modeling and applied interface.

Shuqin Tech also keep doing research on Blockchain with big data. Its first product Baoquan.com can provide one-stop data attestation service for enterprises and personal.

For more Blockchain solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

IN DIGITAL ERA, ORIGINAL WORKS NEEDS Blockchain COPYRIGHT PROTECTION

There’s been a bit of talk recently about getting interest service providers (ISPs) involved in the enforcement of copyright law. even where an ISP does not have a direct power to prevent a person from doing a particular infringing act, there still may be reasonable steps that can be taken by the ISP to discourage or reduce online copyright infringement.

What is the questions in copyright sector nowadays?

l  Infringement on intellectual property rights and copyright

The characteristics of the quick and easy of replication for the digital knowledge and information transaction have made pilfer edition flushed. Majority of  publishers start to spread without author’s authorization, which would bring more serious pecuniary loss than traditional piracy for authors.

l  Complexity for copyright transaction

With the increasing frequency of the digital copyright transaction, the demand amount of copyright authorization has increased, while the processing of transaction owns the characteristics of high-cost, low-efficiency with complicated procedures. Hence, it can not keep up with the Internet era’s steps.

l  Variety for demand types

In addition to the official publication, an enormous amount of micro-videos, pictures and Internet articles also need copyright protection. All these original working may nor for the transaction profile but for protecting their own original working.

And  it’s worth recalling digital copyright measures that have been implemented before – to see what worked, and what didn’t. The Blockchain copyright protection solution may takes great change to the digital copyright world.

First, for identity authentication. Through the database that based on blockchain technology, the real identity of appliers can be verified in a fast way, then to protect the legal identity for users.

Second, for authorization and tracking. The whole processing would be recorded on Blockchain at the same time. This is called traceability. Meanwhile the multi-accessing nodes can make each transaction transparency for each node. In another way, the immutability of  data on Blockchain can be guaranteed.

Finally, connect to Bigdata. Using the big data analysis system to build data modeling for data monitoring.

Shuqin Tech started Blockchain technology developer since 2013. Its first product Baoquan.com provide one-stop data attestation service for enterprise and personal. Shuqin Tech also devoting themselves in other application fields, and owning Blockchain solutions in many sectors.

More solutions: https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Five Most Promising Altcoins of 2017

2017 is a great year for cryptocurrency development - so many exciting projects appear that it’s difficult to keep track of them all. Recently, we wrote about some altcoin contenders. Now, let’s take a closer look at the five most promising newcomers whose positions are growing fast.

Wings [WINGS]

One of the first cryptocurrencies to appear this year was Wings. From January to June its popularity jumped up and down and has recently stabilized at a market capitalization of $56 mln.

Based in Switzerland, Wings provides the necessary tools for the creation and promotion of decentralized projects. They use smart contracts and forecast markets to evaluate projects.

Gnosis [GNO]

Next up is the well-known Gnosis. They started in February and soon reached high levels ofdemand, but have backtracked a bit since May. The coin has now settled at a market cap of around $295 mln.

Its “crowdsourced wisdom” platform enables anyone to speculate on any future events and get rewards for accurate predictions. Gnosis also provides its own platform for the creation of DApps.

Zcash [ZEC]

In the middle of the chart, we have Zcash with a $378 mln market cap. The cryptocurrency first showed up in October 2016, but its popularity has never been quite high until March 2017.

Zcash is the first open and permissionless financial system operating under zero-knowledge cryptography. It uses a special zk-SNARK proof which allows the network to support a secure ledger of balances without revealing any parties.

Zcash encrypts the payment information and uses a novel cryptographic method to verify their validity. According to the developers, that approach allows all involved parties to send completely anonymous transactions.

Golem [GNT]

The second spot goes to another March-born cryptocurrency Golem, which has reached a $400 mln market cap. On March 20 it became the 13th most valuable digital currency and its popularity has leveled in April.

Golem’s crowdfunding event became the second fastest in crypto history - $8,600,000 in 29 minutes. Golem plans to become a huge global network, extremely powerful and 100 percent open sourced. It can also help with computationally intensive cryptography work.

Stratis [STRAT]

And finally, our gold medal goes to Stratis. This cryptocurrency became one of April’s top contenders immediately after hitting the markets. In the last week of May, its market capjumped up to $1.070 bln.

Stratis is currently one of the top 10 cryptocurrencies on CoinMarketCap. This powerful Blockchain development platform has a unique feature - it offers the ability to code native decentralized apps in C#. It opens up a number of possibilities for developers.

Moreover, Stratis allows organizations to create private Blockchains. They are realized in the form of sidechains, which are fully integrated with Stratis’ main Blockchain.

Shuqin Tech is a Blockchain company in China. If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com

Original source：https://cointelegraph.com/news/five-most-promising-altcoins-of-2017

INSURANCE MARKETS EMBRACE BLOCKCHAIN

Nowadays, insurance sector has begun to expose some questions, meanwhile, the new advanced technology—— Blockchain will take  great changes to the industry. In other way, it means insurance markets embrace  Blockchain, many Blockchain experts offer solutions to solve the present issues.

What is the market situation?

For insurance enterprise:

l  Fast growth for the insurance fee, enterprise profits declined

l  Increased market entity, types of insurance diversified

l  High labor cost, strong dependence

For customers:

l  Difficult to choose

l  High product price

l  Marketing harassment & misleading

From above questions, people has begun to realize that Blockchain is a great match for reinsurance and that smart contracts lend itself to the complexities of offsetting risk and managing multiple parties, each with a role to play and financial interest in getting it right the first time.

However, the concepts with Blockchain has yet to be accepted in insurance markets, and there is no well-developed and Blockchain-based service plarform. Many companies try to make complex technologies easier to use and experiment with. It still has  a long way to do with the decentralized applications.

Shuqin Tech is a Blockchain company, they have organized to accelerate their Blockchain thinking, plane and development to the real-world projects. For the insurance smart platform, they also proposed the platform model conception:

Their first product Baoquan.com is for data attestation based on Blockchain. This platform is focusing on filling the gaps and resolve the pain point for fintech industry, and has constructed an infrastructure with “Third-party” data preservation, credit enhancement, and truth verification.

For more solutions:

https://www.baoquan.com/en/

If you are a Blockchain developer, if you are familiar with IBM Hyerledger, Ethereum, siacoin or bitcoin, if you are good at golang language, if you wanna change your position, if you wanna fight in Blockchain field, if you are seeking for a better life, please contact us: js@baoquan.com