区块链技术是伴随加密数字货币兴起的吗,区块链技术是伴随加密数字货币逐渐兴起
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㈠ Which technology is this feature of cryptocurrency based on?
The definition, characteristics and applications of "encrypted digital currency"
(1) Definition. "Encryption "Digital currency" is a digital form of asset generated based on blockchain technology. In some cases, it can be used as a digital representation of the value of a currency substitute. Currently, various "encrypted digital currencies" that have appeared around the world are based on Derived from the application of blockchain technology in different scenarios. ICO’s initial public offering of currency is a common way to raise funds for blockchain technology projects. Early participants in ICO can exchange numbers such as Bitcoin and Ethereum for initial The generated encrypted digital currency, that is, tokens, can be used on the blockchain of the project and can also enter the secondary market for transactions. ICO is an inevitable trend of digital currency finance under the development of high technology, and it is also a high-tech-based New business formats under the guise of "illegal fund-raising" and "online fraud".
(2) Characteristics. "Encrypted digital currency" uses blockchain technology to achieve decentralization and cannot be tampered with, and has the technical advantage of solving trust problems. Blockchain The chain collects all historical transaction records of individuals, and these transaction processes and transaction data are disclosed on the network. The system saves the same number of records as real records, and the data is difficult to be tampered with, ensuring that the data is authentic, reliable, open and transparent, and provides Trust and endorsement of transaction parties who do not know each other. Blockchain technology generates a set of trustworthy databases that record time and cannot be tampered with. Even if there is no neutral third-party organization, cooperation between nodes can be achieved.
(Three) ) application. The application of "encrypted digital currency" is gradually spreading. Here is Bitcoin as an example. In early 2009, Bitcoin (BTC) was officially launched as a completely decentralized and distributed currency. It is the use of blockchain technology in transactions. A landmark event for innovative applications in the payment field. Traditional peer-to-peer payments must go through a legal payment system to ensure that the same funds will not be paid twice or fraudulently. And Bitcoin holders send Bitcoins to other people , without the need for a central intermediary. Transactions are recorded in a blockchain and distributed to all other Bitcoin holders around the world. This shared database records the historical transaction records and holders of all existing Bitcoins , the data will be updated 6 times per hour. Before a new transaction is completed, it needs to be mathematically verified by a large number of other Bitcoin holders. Therefore, Bitcoin is based on mathematical credit and does not require authority like traditional finance. Third-party credit endorsement.
㈡ What is the relationship between blockchain and digital currency
Blockchain refers to a series of data blocks (i.e. blocks) connected The chain formed is connected in the following way: the N+1th block contains the hash value of the Nth block. Moreover, such a chain of data blocks is simultaneously stored by a widely distributed and huge number of server nodes. and maintenance, each server node has a complete copy of the blockchain. Digital currency is another form of existence and circulation of legal currency, compared to the paper currency and currency currently in circulation.As far as coins are concerned, it exists in the form of numbers. The legal existence of digital currency is legal and is based on blockchain technology. Blockchain is the underlying technology for digital currency issuance. This is also the most direct relationship between the two. They can exist independently of each other. The content of this article comes from: China Law Press "Financial Code of the People's Republic of China: Application Edition"
㈢ What is blockchain technology What are the core components of blockchain technology
What is block Chain technology? What are the core components of blockchain technology? What is blockchain technology:
Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of its information (anti-counterfeiting) and generate the next block.
The core components of blockchain technology:
Blockchain mainly solves the trust and security issues of transactions, so it proposes four technological innovations to address this issue:
The first one is called distribution A type of ledger means that transaction accounting is completed by multiple nodes distributed in different places, and each node records a complete account, so they can all participate in supervising the legality of the transaction and can also jointly testify for it.
Different from traditional distributed storage, the uniqueness of blockchain distributed storage is mainly reflected in two aspects: First, each node of the blockchain stores complete data according to the block chain structure. Traditional distributed storage generally divides data into multiple parts for storage according to certain rules. Second, the storage of each node in the blockchain is independent and has equal status, relying on the consensus mechanism to ensure storage consistency, while traditional distributed storage generally synchronizes data to other backup nodes through the central node. [8]
No node can record ledger data independently, thus avoiding the possibility of a single bookkeeper being controlled or bribed to record false accounts. Also because there are enough accounting nodes, theoretically speaking, the accounts will not be lost unless all nodes are destroyed, thereby ensuring the security of the accounting data.
The second one is called asymmetric encryption and authorization technology. The transaction information stored on the blockchain is public, but the account identity information is highly encrypted and can only be accessed with authorization from the data owner. This ensures data security and personal privacy.
The third one is called the consensus mechanism, which is how all accounting nodes reach a consensus to determine the validity of a record. This is both a means of identification and a means of preventing tampering. districtBlockchain proposes four different consensus mechanisms, which are suitable for different application scenarios and strike a balance between efficiency and security.
The consensus mechanism of the blockchain has the characteristics of "the minority obeys the majority" and "everyone is equal". "The minority obeys the majority" does not entirely refer to the number of nodes, but can also be computing power, the number of shares, or other factors. A characteristic quantity that a computer can compare. "Everyone is equal" means that when a node meets the conditions, all nodes have the right to give priority to the consensus result, which will be directly recognized by other nodes and may eventually become the final consensus result. [8]
Taking Bitcoin as an example, it uses proof of work. Only when more than 51% of the accounting nodes in the entire network are controlled, it is possible to forge a non-existent record. When there are enough nodes joining the blockchain, this is basically impossible, thus eliminating the possibility of fraud.
The last technical feature is called smart contracts. Smart contracts are based on these trustworthy and non-tamperable data and can automatically execute some predefined rules and terms. Take insurance as an example. If everyone's information (including medical information and risk occurrence information) is true and trustworthy, it will be easy to automate claims settlement in some standardized insurance products.
In the daily business of insurance companies, although transactions are not as frequent as those in the banking and securities industries, the reliance on trusted data continues unabated. Therefore, the author believes that using blockchain technology from the perspective of data management can effectively help insurance companies improve their risk management capabilities. Specifically speaking, it is mainly divided into risk management of policyholders and risk supervision of insurance companies.
Chongqing Jinwowo Analysis: The consensus mechanism is the core of blockchain technology. The consensus mechanism largely determines the degree of mutual trust between nodes in the entire blockchain system, and also determines other users’ views on the blockchain. The degree of trust in online data
What is the core component of blockchain technology? Analysis by Chongqing Jinwowo: Blockchain technology consists of three core technologies: consensus mechanism, common defense mechanism, and distributed storage.
The three core technologies are supported by machine trust, that is, through the support of network technology, breakthroughs in difficult problems such as point-to-point transactions, decentralization, non-tampering of recorded information, irreversible transactions, and information encryption are achieved through network technology support.
The development of blockchain technology is becoming more and more prosperous with the continuous expansion of applications. This powerful development force coming from the needs of various industries has caused rapid changes in blockchain technology, allowing various industries to achieve great results. The results are attracting more and more attention, and professional technologies and resources are constantly concentrated in this industry, thus bringing the development of blockchain technology to a new stage, and the impact of this development of blockchain technology has also much attention.
When talking about blockchain technology, Bitcoin has to be mentioned. As many people know, the electronic currency Bitcoin does not rely on a specific currency.It is not issued by the currency institution, but is generated through a large number of calculations by a specific algorithm. In fact, the core that truly supports Bitcoin is blockchain technology.
How does the invisible and intangible Bitcoin operate through blockchain technology? The interpretation circulated in the industry is that blockchain can be regarded as a technical solution for collectively maintaining reliable databases through "decentralization" and "trustlessness". In layman's terms, this technology can be understood as a technology in which everyone participates in accounting. In the past, people used centralized servers to keep accounts, but in the blockchain technology system, everyone can participate in accounting and jointly identify Authenticity of records.
"Through this technology, even if there is no neutral third-party organization, two parties that do not trust each other can achieve cooperation. In short, the blockchain is like a 'machine that creates trust.'" Bubi Company It is a leading blockchain service provider in China. It has made many breakthroughs in the blockchain technology platform, can meet scenarios with tens of millions of users, and has the ability to quickly build upper-layer application businesses.
The blockchain technology used by all parties involved in recording and storing information adopts a decentralized distributed structure, which saves a lot of intermediary costs and can better ensure data security; at the same time, it has a time stamp that cannot be tampered with. It can effectively solve problems such as data tracking and information anti-counterfeiting.
Will it become the next trend of Internet finance?
Although blockchain emerged with Bitcoin, the derived value of this technology has transcended digital currency. Bubi Blockchain focuses on the innovation of blockchain technology and products. It already possesses a number of core technologies and has developed its own blockchain service platform. With decentralized trust as the core, we are committed to building an open value circulation network to allow digital assets to flow freely. What Bubi wants to do is to create a new technology and product - to realize real value circulation and bring the Internet to a new level. With the application of this technology, there will be no central organization when transferring assets, and direct transfer of assets between us can be achieved.
In the current international financial market, the U.S. Central Bank, Swiss Bank, and some insurance and futures companies are all competing to develop blockchain technology. Fang Liang introduced that in the Internet financial industry, blockchain technology will first affect financial infrastructure such as payment systems, securities settlement systems, and transaction databases; later, the technology will also expand to general financial services, such as credit systems and "anti-money laundering" "wait.
"The payment and clearing system in the financial field will evolve towards decentralization. The electronic ledger supported by blockchain technology is a reliable system that is error-free and cannot be tampered with. It has various functions for payment, clearing, transaction, confirmation of rights, etc. A profound impact," Li Yan said.
Therefore, industry insiders believe that blockchain technology may be the next trend in the Internet financial industry. As the interconnection of all things deepens, Yang Tao, assistant director of the Institute of Finance, Chinese Academy of Social Sciences, also said that blockchain will make it possible for all individuals to become important nodes in the allocation of financial resources, and will also promote the improvement of existing financial system rules. Build a totalShare a win-win financial development ecosystem.
Blockchain technology will affect many industries
“Blockchain technology has been widely used in the era of big data.” Li Yan said frankly that in addition to the Internet financial field, blockchain technology has been used in many industries. It has been applied in many fields and has shown great prospects.
For example, the healthcare industry has benefited greatly from blockchain technology. In reality, patient private information leaks often occur, and centralized database or file cabinet management in medical departments is no longer the optimal choice. Medical institutions are using blockchain technology to keep patients' private information confidential.
In addition, blockchain technology also has important legal implications. In some civil fields, it is often necessary to provide evidence to determine blame, and blockchain technology can record every step and help judicial authorities identify the specific responsible person.
"Especially in the field of assets, whether it is physical assets such as real estate and cars, or intangible assets such as health and reputation, this technology can be used to complete registration, transactions, and tracking. It can be said that any production and life that lacks trust In all fields, blockchain technology will have its place."
The development of blockchain technology has also brought about changes in the operational concepts of various industries. New technologies and new concepts have promoted new developments in various industries. This The impact of this driving force on society and the promotion of economic activities are also huge. Many new industry phenomena will occur one after another, and the public is also waiting and watching, expecting this brand-new technology to be used by various industries and better benefit all industries.
The so-called blockchain technology, also known as distributed ledger technology, is an Internet database technology that is characterized by decentralization. , open and transparent, allowing everyone to participate in database records.
Explained in layman’s terms: If the database is assumed to be a ledger, reading and writing the database can be regarded as a bookkeeping behavior. The principle of blockchain technology is to find out the fastest and best bookkeeping within a period of time. This person will keep accounts, and then send this page of information to everyone else in the entire system. This is equivalent to changing all the records in the database and sending them to every other node in the entire network, so blockchain technology is also called a distributed ledger.
What is the core technology of Jinwowo blockchain technology?
Chongqing Jinwowo analyzes the core technologies of blockchain technology as follows:
Distributed ledger technology, asymmetric encryption technology and smart contracts.
The core of the blockchain is that it stores all information in an independent personal computer network, making it a decentralized and distributed structure.
This means that the system is not owned by a controlling company or person, but that everyone can use and run the system.
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What is blockchain technology?Blockchain has been hyped up like crazy, but you know nothing about it!
Blockchain is a distributed database system participated by different nodes and an open ledger system.
It consists of a series of data blocks or data packets generated according to cryptographic methods, that is, blocks. Each block of data information is automatically timestamped, thus Calculate a data encryption value, that is, a hash value (hash).
Blockchain technology is essentially a distributed accounting technology. It allows everyone to have an instantly synchronized account book in their hands. Every transaction that occurs in the entire network will have thousands of backups and synchronous records. When perpetrators attempt to tamper with ledger data, they must change the ledger in the hands of the majority of people to achieve their goal.
㈣ What is the connection between blockchain and Bitcoin?
Blockchain is the technology used by Bitcoin and is a database technology.
Bitcoin is an application of blockchain and a digital currency.
Blockchain technology was born with the birth of Bitcoin, but blockchain technology is not limited to Bitcoin, or even digital currency, but has a very wide range of applications.
In 2008, Satoshi Nakamoto published a paper on Bitcoin, commonly known as the Bitcoin white paper. Among them, the concept of blockchain was proposed in Satoshi Nakamoto’s white paper. Blockchain is a series of data blocks (called "blocks") generated using cryptographic correlations. Newly added data blocks can always be linked to the previous block, which is the end of the entire blockchain. Bitcoin’s peer-to-peer network stores all transaction history in the “blockchain.”
Since the advent of Bitcoin, more and more digital cryptocurrencies using blockchain technology have been launched, and now there are nearly 3,000 types.
See: All Digital Currencies
But in addition to the field of cryptocurrency, blockchain technology has been widely used in finance, Internet of Things, logistics, insurance, digital copyright and other fields.
㈤ What is the relationship between blockchain and digital renminbi
Blockchain refers to a chain connected by a series of data blocks (i.e. blocks). The connection method is: among them The N+1th block contains the hash value of the Nth block. Moreover, such a chain of data blocks is simultaneously stored and stored by a large number of widely distributed server nodes.Maintenance, each server node has a complete copy of the blockchain.
Digital currency is another form of existence and circulation of legal currency. Compared with the banknotes and coins currently in circulation, it exists in a digital form. The legal existence of digital currency is legal and is based on blockchain technology.
Blockchain is the underlying technology for digital currency issuance. This is also the most direct relationship between the two. They can exist independently of each other.
For reference.
㈥ The relationship between digital currency and blockchain
1. Blockchain and digital currency complement each other and are inseparable. Blockchain is one of the means of digital currency circulation.
2. Blockchain is the theoretical basis of digital currency. Digital currency is established on the basis of blockchain technology. Blockchain has certain guarantees for the security of digital currency. At the same time, digital currency is a block chain. The most successful application of chain technology.
Extended information: 1. Digital currency is an unregulated, digital currency, usually issued and managed by developers, and accepted and used by members of specific virtual communities. The European Banking Authority defines virtual currency as: a digital representation of value that is not issued by a central bank or authority and is not linked to a legal currency, but which, because it is accepted by the public, can be used as a means of payment or can be transferred, stored or traded electronically. .
2. Digital currency can be considered as a virtual currency based on node network and digital encryption algorithm. The core characteristics of digital currency mainly reflect three aspects: ① Because it comes from certain open algorithms, digital currency has no issuing entity, so no person or institution can control its issuance; ② Since the number of algorithm solutions is determined, the digital currency The total amount of currency is fixed, which fundamentally eliminates the possibility of inflation caused by excessive issuance of virtual currency; ③ Since the transaction process requires the approval of each node in the network, the transaction process of digital currency is safe enough.
3. The blockchain shared value system was first imitated by many cryptocurrencies, and improvements were made in proof of work and algorithms, such as the use of proof of equity and SCrypt algorithms. Subsequently, the blockchain ecosystem continued to evolve around the world, with the emergence of initial coin offerings (ICO); the smart contract blockchain Ethereum; the asset tokenization sharing economy with “light ownership, heavy usage rights”; and blockchain countries. People are using this shared value system to develop decentralized computer programs in all walks of life and build decentralized autonomous organizations and decentralized autonomous communities around the world.
㈦ What is digital currency blockchain
1. Blockchain is a ledger that records digital currency transactions
Take Bitcoin as an example, it has no entity form, but exists in a special ledger. All Bitcoin transactions are recorded in the ledger. Through the transaction records, we can calculate the number of Bitcoins owned by each user. If a person owns Bitcoin, it means that transaction records related to him can be found in the ledger.
The ledger mentioned here is a piece of software. We canIt can be downloaded from the Bitcoin official website, and the underlying technology used in this software is blockchain. To facilitate understanding, we usually say that blockchain is the ledger.
The reason why blockchain is used as the underlying technology of the ledger is to achieve the decentralization of digital currency. It can be said that the starting point for a series of problems encountered by digital currencies and the solutions provided comes from decentralization.
2. Blockchain is a technology that ensures the safe use of digital currencies. Everyone knows that blockchain technology has two major characteristics: encryption and non-tamperability, which can reduce the probability of errors during the use of digital currencies. reduced to 0. Since digital currencies have higher requirements for encryption, blockchain technology must be used to support them. Currently, not only many industries in our country are using blockchain technology, but many foreign countries are also actively using blockchain technology. Blockchain technology.
[Extended information]
Blockchain is the underlying technology of digital currency, and Bitcoin is the first successful application of blockchain.. To understand this problem, we must first recognize the facts: not all blockchains require Issuing digital currency, currently our country strongly supports "coinless blockchain". Generally speaking, public blockchain, that is, public chain, needs to issue tokens as "rewards" to motivate users and maintain system operation, while ordinary blockchain , often called a consortium chain, can or cannot be issued. Private blockchains are mostly used for company internal audits and generally do not need to issue coins. The following is a detailed explanation of the differences between the three blockchains:
1. Public block Chain: A blockchain in which anyone in the world can read and send transactions for validity confirmation, and anyone can participate in its consensus process. Bitcoin and Ethereum are typical applications of public blockchains. Public blockchains are a global Distributed blockchain, blockchain data is open, user participation is high, and it is easy to produce network effects, easy to apply and promote. Therefore, this kind of blockchain operation relies heavily on the incentive mechanism, Bitcoin Tokens such as Ethereum and Ethereum are used as "rewards" for incentives, so public chains need to issue tokens to maintain their own development and ecology.
2. Community Blockchain (Alliance Chain): It means that the participation of nodes in the blockchain is selected in advance. There are usually good network connections and other cooperative relationships between nodes. The data on the blockchain can be open It can also be internal. For partial distribution, we can regard it as "partial decentralization". Each alliance in the chain has its own centralized management. For example, R3CEV of more than 40 banks is a typical alliance chain. Chains usually don’t require a lot of money, but there are also individual alliance chains that choose to send money to motivate members within the alliance to contribute, so there are no restrictions on the chain.
3. Private blockchain: refers to a node with only a limited scope of participation, such as a specific organization’s own users, strict permission management for data access and use.. Write permissions in a completely private blockchain Only in the hands of participants, read access can be open to the outside world or restricted to any extent. Currently it is mainly used for internal audit work of the company.Therefore, the private chain does not need to issue currency, nor does it have the characteristics of decentralization. It is a centralized management mechanism.
What is the connection between digital currency and blockchain technology
The two complement each other. Chains and coins are actually inseparable. Blockchain technology gave birth to digital currency, and digital currency expanded In the application of blockchain, the most successful digital currency at present is Bitcoin. If you want to invest, you can open an account at OKEx Bitcoin Exchange and buy using WeChat. If you have any questions, feel free to ask questions
㈨ How to understand blockchain
Nowadays, science and technology are developing rapidly and the situation is turbulent. If you and I are a little lazy, we may be out. No, the new "hot internet celebrity" - blockchain is here. Since the beginning of this year, blockchain has become one of the hottest knowledge points in the technology world, and it has become increasingly dazzling in fields such as digital finance, Internet governance, and big data computing.
Blockchain technology also has broad application prospects in the military field and is very likely to quietly subvert future wars.
This is not Xiaole bragging. "In matters involving the three armed forces, nothing should be more important than secrecy." We must know that in the future information battlefield, confidentiality is the key to determining the outcome of a war. Because the blockchain system has many characteristics such as information independence, confidentiality and integrity, it can achieve the perfect combination of data storage and data encryption. After being attacked, it is also extremely resilient and can protect highly sensitive data, which is very helpful in winning the war.
According to the information collected by Xiaole, some countries are currently planning to build a blockchain information platform and have begun to study the application potential of blockchain in several scenarios such as military satellites and nuclear weapons; a certain International organizations are currently evaluating the performance of blockchain technology in military logistics, the Internet of Things and other fields.
If digital currencies such as Bitcoin are blockchain 1.0 applications, then the "smart contracts" that provide strong guarantees for the security of network transaction data are blockchain 2.0. There will be 3.0 in the future - from DAO (blockchain self-consistent organization), DAC (blockchain self-consistent company) to the blockchain society.
“Use informatization to cultivate new kinetic energy, use new kinetic energy to promote new development, and use new development to create new brilliance.” I believe that blockchain, the “new kinetic energy” of technology, will bring us more surprises: “ "With a machine in hand, I own the world", "trade autonomy", wider sharing, optimally adapted life model... Blockchain technology will create a more honest, convenient and efficient big data era.
Content source: People's Liberation Army Daily
