List of blockchain of China Netcom
blockchain includes public blockchain, joint (instry) blockchain and private blockchain. Public chain point-to-point e-cash system: bitcoin, smart contract and decentralized application platform: Ethereum
blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies
blockchain is an important concept of bitcoin. In essence, it is a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of bitcoin network transaction information, Used to verify the validity of its information (anti-counterfeiting) and generate the next block
extended data
according to the different degree of blockchain network centralization, three kinds of blockchains under different application scenarios are differentiated:
1. The blockchain with the whole network open and without user authorization mechanism is called public chain
2. The authorized nodes are allowed to join the network, and the information can be viewed according to the authority. It is often used in the inter agency blockchain, which is called alliance chain or instry chain
3. All the nodes in the network are in the hands of one organization, which is called private chain
alliance chain and private chain are also called licensing chain, and public chain is called non licensing chain
blockchain features
1, decentralization. Blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain
2. Openness. Blockchain technology is based on open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent
3. Independence. Based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention
4. Safety. As long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily manipulated and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes
5. Anonymity. Unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information can be transferred anonymously
in the past six months, the concept of blockchain has graally become hot in China, and the financial circle has been blowing waves of blockchain whirlwind. With its unique technical advantages, blockchain has attracted more and more attention and favor from people in the instry. With the characteristics of decentralization (or multi centralization), high transparency, impossibility of tampering and no single point of failure, blockchain technology is coming into the vision of financial institutions and enterprises. At least it has been applied from theoretical discussion to practical application in many fields, such as digital currency, payment and exchange, registration and settlement, digital assets, traceability and anti-counterfeiting, supply chain, Internet of things, etc
"blockchain" was first released in early 2009 as "bitcoin". Blockchain has become the basic protocol and technical application for the launch, recording and circulation of bitcoin. Although bitcoin has been controversial since it came into being, and it can not even be regarded as "currency" by the government and monetary authorities, the blockchain technology applied by bitcoin has been widely concerned by the government and monetary authorities
why has blockchain become a hot technology and topic
perhaps the most important of these is that bitcoin, which is based on blockchain technology, has opened a new technology and rule system exploration and attempt, which has little connection with traditional society (offline) and is completely applied to the online world (online), such as Internet users' identity verification, wealth confirmation, transaction records, notarization verification, etc, This provides people with an alternative path and unlimited reverie to adapt to the development of the Internet society
from the perspective of its application in bitcoin, blockchain intuitively means a new set of network block (block, also known as community) establishment, bitcoin configuration, netizen identity verification, and bitcoin (value) confirmation and transaction records formed by mining by combining encryption technology with Internet technology, As well as the extended encryption of bitcoin cross block flow (value transfer) (including factors such as block and transaction time identification) registration and verification, the internet protocol rules and ledger system including block chain, whole process encryption and mutual authentication. Because bitcoin is not a substitute for offline fiat money, but a new and decentralized network currency (virtual currency) issued and managed by the illegal monetary authority, which mainly imitates the mode of gold and is completely protected and supported by the Internet basic protocol and strict encryption technology, it has also formed a set of virtual currency which is different from It is also not subject to the new monetary rules and systems of social laws, and can be traded or exchanged with legal tender. Bitcoin has been more than eight years since it was launched, and there has been no record of funds or user information stolen. Its security has been verified, and its efficiency and cost of capital clearing also have obvious advantages. This makes people have more confidence in the blockchain technology applied by bitcoin, and it is also more and more clear that although blockchain is a technology and protocol initiated and applied by bitcoin, blockchain is not the same as bitcoin, and its application will never be limited to bitcoin. The application of blockchain can be decentralized or centralized; It can be public chain mode or private chain mode. Therefore, after bitcoin, blockchain technology is constantly developing and innovating, and constantly exploring new application fields, especially in the financial field
the reason why more and more people attach great importance to blockchain is that with the development and wide application of the Internet, more and more economic exchanges and trading activities have been transferred to the Internet, and the network world (or online society) is rapidly expanding, enriching and active, while online transactions must solve the problems of identity verification, value verification, transaction records, etc The efficiency and security protection of inspection and verification need strict intermediary and agreement (rules or constitution). In this regard, the traditional thinking and practice is to conform to the development track of the transfer from offline trading to online trading, and push the common rules and practices of the real (offline) society to the online (Network) society, but it is increasingly difficult to adapt to the needs of online trading in practice
for example, the natural choice of the party's identity verification is to add the account or transaction password, as well as biometrics such as Facebook, iris, fingerprint, etc., based on the information of the identity documents protected by the laws of various countries, to carry out the identity verification of online transactions. But this method, first of all, makes the citizenship information of the cross-border interconnected network world subject to the real social administrative jurisdiction, At the same time, non digital, multi identity information collection and verification will greatly increase the cost and rece the efficiency
moreover, in real society, all kinds of economic activities involving capital liquidation, except direct cash transactions, require the parties to open accounts in banks and other institutions first, and carry out capital liquidation through the account opening institutions. However, for various reasons, even in a country, it is impossible to require all citizens to open accounts in an account opening institution (including its branches), It is even more impossible to do this between multinational companies, which makes the transactions of the parties who open accounts in different institutions must be completed through the clearing between their account opening institutions. It will seriously affect the efficiency and cost of transaction confirmation and capital clearing if this mode is implemented in the network world
in addition, in real society, the valuation and liquidation of trading activities must involve money, which is legal tender protected by national or regional sovereignty. In the case of cross-border Internet Interconnection and cross-border development of Internet transactions, transaction pricing and capital clearing also involve currency issues. The operation of multiple currencies will greatly increase the cost and risk of clearing. Therefore, the development of network world and network transaction needs the innovation of identity verification, value verification, currency valuation, transaction confirmation and record, account management and verification. Bitcoin and blockchain technology provide very important enlightenment and practice
of course, blockchain is still a new concept and technology, which needs further verification and improvement; The application of bitcoin is also an extreme example: the initial bitcoin can not be directly converted from legal tender, but can only be obtained through "mining" in the network world. Therefore, bitcoin can completely set aside the offline social rules, form a new set of game rules by using blockchain technology, and extend from online to offline. In real society, whether online or offline transactions, the main body is people (including legal persons). The management of their wealth or value should not be completely divided into two worlds, but must be connected and integrated. Therefore, o2o is necessary. This requires the application of blockchain not only to study and solve the problems of the network world, but also to study and solve the connection and integration between the network world and the real society. This will bring more challenges and risks, and also require more people, more strength, more in-depth discussion and innovation. It is also possible that blockchain technology will be replaced by more advanced and perfect technology in the future, but the historical value of blockchain will be indelible
the development of blockchain technology in China
Bubi blockchain is a commercial blockchain. Bubi covers seven areas: exchange, points (multiple points, gege points), insurance (sunshine insurance will launch accident insurance on our blockchain in a month, which can greatly rece channel costs), equity crowdfunding (gold stock chain, etc.), supply chain finance (Qian Xiang, etc.), supply chain (cooperation with the material chain, etc.), jewelry anti-counterfeiting, etc. Some funds cooperating with Bubby have committed 150 million investment funds. Bubby plays the role of "LP" in the fund, helping the fund identify and invest in companies related to blockchain. At present, the average amount of angel investment obtained through Bubi blockchain is about 3 million, with an average valuation of more than 40 million
blockchain can drive the birth of a new business model
the characteristics of blockchain technology enable it to achieve some business models that are difficult to achieve in the centralized mode. For example, in the Internet of things instry, some organizations have proposed to use blockchain technology to manage the identity, payment and maintenance tasks of tens of billions of Internet of things devices. Using blockchain technology, IOT equipment manufacturers can greatly extend the life cycle of procts and rece the cost of IOT maintenance
blockchain technology has a flexible architecture
according to different application scenarios and user needs, blockchain technology can be divided into public chain, private chain and alliance chain, which can be selected according to the actual use of institutions<
blockchain technology is a useful tool to realize sharing finance
the essence of sharing finance is to realize the optimal allocation of financial resources by recing the asymmetry of financial information, and to ensure the implementation of the rights and interests of both parties in the transaction and facilitate the transaction through strict third-party authentication and supervision mechanism. Through the use of blockchain technology, financial information and financial value can be more strictly protected, and more efficient and lower cost flow can be realized, so as to realize the sharing of value and information
"from the perspective of historical development trend, money has always evolved with the development of technological progress and economic activities. From the early physical money, commodity money to the later credit money, it is a natural choice to adapt to the development of human commercial society. As the currency of the previous generation, paper money has low technology content. From the perspective of safety and cost, it is the general trend to be replaced by new technology and new procts. It will take at least 10 years for China to implement digital currency, so digital currency and cash will be in parallel and graally replaced for quite a long time. "“ For digital currency, blockchain technology is an optional technology, which is characterized by distributed bookkeeping, non account based and non tampering. If digital currency focuses on the protection of personal privacy, blockchain technology can be selected. The people's Bank of China has deployed an important force to study and discuss blockchain application technology. However, so far, blockchain still occupies too many resources, whether it is computing resources or storage resources, which can not cope with the current transaction scale. Whether it can be solved in the future depends on the situation. "
the development of Internet is in the ascendant and irreversible. The development of the network world and its connection and integration with the real society are also the general trend, and the corresponding rules and technology are of great significance. China has been in the forefront of the world in Internet application, and should actively explore and contribute to new rule making and technology application, and strive to lead the new development of the Internet world
what is the concept of blockchain? People will realize that blockchain technology plays a more and more important role in reality, and is supported by many organizations, so that the popularization of blockchain in reality has entered a new application stage.
China blockchain network adheres to & quot; Overview the situation and trends of blockchain, gather the business strategy of blockchain, spread the hot information of blockchain, and show the rich value of blockchain; It relies on world authoritative institutions (China social and economic decision making Advisory Committee, China social and economic decision making Advisory Center, China Market Research Center and China Market Research Center) to study, judge and make decisions on the blockchain. The operating institutions cooperate with the people's Bank of China, China Banking Regulatory Commission, China Securities Regulatory Commission, China Insurance Regulatory Commission, top 10 commercial banks, top 10 law firms, top 10 law firms, top 10 commercial banks, top 10 law firms The top ten accounting firms, top ten intellectual property companies, China professional credit platform and more than 100 Internet and financial research institutions of relevant national ministries and commissions have cooperated to absorb the authoritative views of 650 well-known experts and scholars from 200 key universities at home and abroad, and have more than 2000 excellent editors and 500 national Internet technology backbone special contributors to provide first-line information. Its authority, foresight, comprehensiveness, strategy, authenticity and practicability have been recognized by the global market, making China's blockchain network unique in the global blockchain field
the & quot
China blockchain network is a large-scale comprehensive media organization officially approved by relevant state departments to release financial and economic information. The website was jointly organized by China Enterprise News Watch, 28 financial institutions, 36 colleges and universities, 200 business associations and more than 100 world-famous media in 2012. It is now undertaken by Zhongcheng Cultural Media Co., Ltd. and is the world's largest blockchain portal
China blockchain network adheres to & quot; Overview the situation and trends of blockchain, gather the business strategy of blockchain, spread the hot information of blockchain, and show the rich value of blockchain; It relies on world authoritative institutions (China social and economic decision making Advisory Committee, China social and economic decision making Advisory Center, China Market Research Center and China Market Research Center) to study, judge and make decisions on the blockchain. The operating institutions cooperate with the people's Bank of China, China Banking Regulatory Commission, China Securities Regulatory Commission, China Insurance Regulatory Commission, top 10 commercial banks, top 10 law firms, top 10 law firms, top 10 commercial banks, top 10 law firms The top ten accounting firms, top ten intellectual property companies, China professional credit platform and more than 100 Internet and financial research institutions of relevant national ministries and commissions have cooperated to absorb the authoritative views of 650 well-known experts and scholars from 200 key universities at home and abroad, and have more than 2000 excellent editors and 500 national Internet technology backbone special contributors to provide first-line information. Its authority, foresight, comprehensiveness, strategy, authenticity and practicability have been recognized by the global market, making China's blockchain network unique in the global blockchain field
the & quot; Chain network, chain weekly, chain research report, finance and economics, news, banking, legal system, securities, futures, finance, finance, intellectual property, digital currency, financial management, credit and culture; And other important columns are famous all over the world. All kinds of dynamic information broadcasted daily is directly connected to financial institutions, central banks, China Banking Regulatory Commission, China Insurance Regulatory Commission, China Securities Regulatory Commission, commercial banks, Internet of things enterprises, law firms, financial companies, etc. all over the world. It is a link and bridge for blockchain to communicate and cooperate with all walks of life<
major activities such as "China small and medium sized enterprises investment and Development Forum" and "International Cultural Instry Investment Fair" sponsored and co sponsored by China blockchain network are well-known at home and abroad
the tenet of China blockchain network is to connect with the world, serve the world, run the network with integrity and keep pace with the world
Finance, news, banking, legal system, securities, futures, marketing, financial management, Culture & quot; And other important columns are famous all over the world. All kinds of dynamic information broadcasted daily is directly connected to financial institutions, central banks, China Banking Regulatory Commission, China Insurance Regulatory Commission, China Securities Regulatory Commission, commercial banks, policy banks, joint-stock banks and rural credit cooperatives all over the world, which is the link and bridge of communication and cooperation between blockchain and all sectors of society<
major activities such as "China small and medium sized enterprises investment and Development Forum" and "International Cultural Instry Investment Fair" sponsored and co sponsored by China blockchain network are well-known at home and abroad
the tenet of China blockchain network is to connect with the world, serve the world, run the network with integrity and keep pace with the world
China blockchain network: the leader of global blockchain
China blockchain network: the largest information exchange platform of global blockchain
in the early stage of the development of the blockchain instry, many enterprises and institutions formed a blockchain alliance to share the research results of blockchain technology and seek wider application of blockchain technology
in the past two years, blockchain alliances have emerged. As of July 2017, there are R3 composed of more than 40 international banks, hyperledger initiated by Linux foundation, Zhongguancun blockchain Instry Alliance located in the core hinterland of China's Internet, China ledger alliance jointly initiated by 11 institutions, gold chain alliance jointly established by 25 financial institutions, and so on Russia's blockchain alliance, known as "Russian version R3", seeks to combine with micro finance, Qianhai international blockchain ecosphere alliance led by Shenzhen Qianhai administration, and Lujiazui blockchain Financial Development Alliance in Lujiazui
many organizations and talents join to promote the vigorous development of blockchain.
financial field
blockchain has great potential application value in international exchange, letter of credit, equity registration, stock exchange and other financial fields. The application of blockchain technology in the financial instry can save the third-party intermediary link and realize the point-to-point direct docking, so as to greatly rece the cost and quickly complete the transaction payment
in the field of Internet of things and logistics, blockchain can also be naturally combined in the field of Internet of things and logistics. Through blockchain, we can rece logistics costs, trace the proction and delivery process of goods, and improve the efficiency of supply chain management. This field is considered as a promising application direction of blockchain
in the field of public service
blockchain is closely related to people's proction and life in the fields of public management, energy, transportation, etc., but the centralization of these fields also brings some problems, which can be transformed by blockchain. The decentralized and fully distributed DNS service provided by the blockchain can realize domain name query and resolution through the point-to-point data transmission service between nodes in the network. It can be used to ensure that the operating system and firmware of an important infrastructure have not been tampered with. It can monitor the status and integrity of the software and detect bad tampering, And ensure that the data transmitted by the system using the Internet of things technology has not been tampered with
in the field of digital right
through blockchain technology, works can be authenticated to prove the existence of text, video, audio and other works and ensure the authenticity and uniqueness of ownership. After the works are confirmed on the blockchain, the subsequent transactions will be recorded in real time to realize the full life cycle management of digital rights, and can also be used as a technical guarantee in judicial evidence collection
in the field of insurance
in terms of insurance claims, insurance institutions are responsible for fund collection, investment and claims settlement, and often have higher management and operation costs. Through the application of smart contract, there is no need for the applicant to apply or the insurance company to approve. As long as the claim conditions are triggered, the automatic claim settlement of the policy can be realized
public welfare
the data stored on the blockchain is highly reliable and tamperable, which is naturally suitable for social public welfare scenarios. The relevant information in the public welfare process, such as donation project, collection details, fund flow, recipient feedback, etc., can be stored on the blockchain, and can be made transparent and public, which is convenient for social supervision