账本中的账页类似于区块链中的什么内容,账本中的账页类似于区块链中的什么

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ⅠWhat information does the blockchain record?

Block headers, transaction details, transaction counters and block sizes...are these all crazy things? The blockchain is the large ledger of the Bitcoin network, and each block is equivalent to a page in the ledger. So what information is recorded in the "ledger"? Currently, each block of Bitcoin mainly records data such as block header, transaction details, transaction counter, and block size. The "block header" contains all information except transaction information, mainly including the hash value of the previous block header: used to ensure that blocks are concatenated in order; timestamp: recording the generation time of the block; random number: that is The answers to arithmetic problems that miners across the entire network PK together; difficulty target: the difficulty score of the arithmetic problem. "Transaction details" record in detail the transferor, incomer, amount and digital signature of the transferor of each transaction, which is the main content in each block. The "transaction counter" represents the number of transactions contained in each block. "Block size" indicates the size of each block of data. Currently, each block is limited to 1MB, and the possibility of expansion in the future cannot be ruled out.

Ⅱ The difference between Bitcoin’s blockchain and other blockchains

In the Bitcoin system, the most important thing is not the concept of “coin”, but a currency without The concept of a central storage institution’s “ledger”. "Coin" is simply the unit of account used on this ledger. It can be said that Bitcoin is essentially a decentralized ledger based on the Internet, and blockchain is the name of this ledger. Here we can make a vivid analogy. If the blockchain is a physical ledger, a block is equivalent to a page in the ledger, and the information carried in the block is the transaction content recorded on this page.
Blockchain is the core and infrastructure of Bitcoin and is a decentralized ledger system.
Since the blockchain is a ledger, what is the difference between this ledger and our traditional ledger? We know that the content on the ledger must be unique, which makes accounting naturally a centralized behavior. This was true in an era when communication means were underdeveloped, and it is also true in today's information age. However, centralized accounting has some obvious weaknesses: once there is a problem with this center, such as being tampered with or damaged, the entire system will face a crisis or even collapse.

Ⅲ What kind of problems can blockchain technology solve?

What kind of problems can blockchain technology solve?

Blockchain technology can solve the trust problem at a relatively lower cost, which plays an important role in the current emphasis on reducing the burden of the real economy and reducing transaction costs, and has great social value. At the same time, there is still a need for continuous exploration of the blockchain technology itself. It is believed that independent controllable intellectual property rights and patents can be integrated with this technology in the future.
In the future, Jinwowo will focus on promoting the legal circulation and commercial application of big data using blockchain technology.

What kind of problems can blockchain technology solve?

Jinwowo analyzes the problems that blockchain technology can solve as follows:
The most important thing about blockchain is that it solves the intermediary credit problem. In the past, it was difficult for two people who did not know and trust each other to achieve collaboration, and they had to rely on a third party.
For example, in payment behavior, any kind of transfer in the past required the existence of an institution such as a bank or Alipay.
However, through blockchain technology, it is the first time that humans have achieved a transfer behavior that both parties can trust without the participation of any intermediary agency. This is a major breakthrough for blockchain.

What kind of problems can Jinwowo blockchain technology solve?

Analysis by Chongqing Jinwowo: The most important thing about blockchain is that it solves the problem of intermediary credit.
In the past, it was difficult for two people who did not know and trust each other to achieve collaboration, and they had to rely on a third party.

What kind of problems can the application of Jinwowo blockchain technology solve?

Chongqing Jinwowo analyzes the problems solved by the application of blockchain technology as follows:
The most important thing about blockchain is that it solves the problem of intermediary credit. In the past, two people who did not know and trust each other had to reach an agreement. Collaboration is difficult and requires a third party.
Through blockchain technology, it is possible to complete behaviors in which both parties can trust each other without the participation of any intermediary agency. This is the problem solved by disintermediation (decentralization) in blockchain technology.

What problems does the emergence of blockchain technology solve?

Blockchain solves the problem of trust, which is the root of all problems.
WaykiChain is a smart contract platform that supports Turing completeness. WaykiChain adopts the dpos consensus mechanism, with a total of 11 voting nodes, which generate a new block every 10 seconds. Through smart contracts, WaykiChain can realize rich application scenarios such as asset issuance, betting applications, copyright traceability, mutual insurance, decentralized exchanges, and cross-border settlement.
But the most important thing in these scenarios is trust and openness and transparency.

What problems can blockchain technology solve?

Based on mechanisms such as distributed accounting, collective contracts and intelligent consensus, blockchain technology presents information processing characteristics such as decentralization, open sharing, authenticity and reliability, which has triggered increasing attention and attention in the financial field, especially in the Internet financial field. Research applications. There are many blockchain system development companies. Blockchain technology development companies like Renren Chain are relatively reliable. You can refer to blockchain solutions.
Point 1: First of all, you must understand the technical strength of the blockchain technology service provider you choose, including the underlying strength of the blockchain and the technical strength of the team; what successful cases have been developed. Ask for developed projects, and the other party will analyze previous successful cases.
Point 2: It depends on the other party’s existing underlying blockchain architecture and project development experience.
Point 3: You can ask your friends if they know anything about it and recommend it. I personally know that the Renren blockchain BaaS platform, which is an open cloud platform, has good overall strength.Ability to quickly build your own IT infrastructure and blockchain services. Of course there are others, choose the platform that suits your business. There are still issues that need attention that have not been mentioned, and I hope others can help add them~

What problems can blockchain technology solve in the copyright field?

The blockchain is similar to a "public ledger". Each block is a "ledger page". When people conduct transactions on the blockchain, the transaction data will be disclosed to every node in the blockchain, and It is recorded on the "ledger page", permanently stored, and cannot be tampered with. In view of the decentralization, openness and non-tampering characteristics of the blockchain, each work entered into the blockchain copyright registration system will generate a unique digital fingerprint that cannot be tampered with.
Users only need to pass the Xiaoxi Copyright Chain platform identity authentication authorization, and after successfully authenticating "I am me", submit the work to the Copyright Chain. After the background review is passed, the data will be generated and written into the blockchain to generate a certificate. To apply for a paper certificate from the Copyright Protection Center, you need to click "Copyright Certificate Application", then follow the steps to fill in the information, pay the fee, and wait for review... From this point of view, the blockchain + copyright model is really safe, time-saving, and effort-saving.
When it comes to legal protection, we have to mention "infringed" copyright as an intangible asset. If the creator lacks awareness of rights protection, the work may face infringement. Xiaoxi Copyright Chain does this relatively well in the industry. The reason why this platform has become the first smart rights protection platform based on blockchain in China is also inseparable from the support of the Chongqing Notary Office. The digital document storage technology based on the blockchain has been recognized by the notary office and can ensure that the content of the notarization application cannot be tampered with, providing help for the digitization, networking, and informatization of notary services. Notarization parties can submit "preservation evidence" for notarization online through the Xiaoxi platform, making the rights holder's ownership of the work more judicially effective, effectively facing infringement, and improving risk response capabilities.
Blockchain, a new credit evaluation system, provides new technical support for the service reform of notary offices. Xiaoxi Copyright Chain has moved part of the business of the Chongqing Notary Office onto the blockchain platform, which can be called an innovation of blockchain in the field of notarial certificate business. In the process of notarization, material review and verification is the most critical and important part. The process design of the "blockchain + notarization" background changes the previous steps that required manual verification in various departments. Notaries only need to review the materials provided by users online to quickly complete the review and verification work, which greatly improves work efficiency.

Can blockchain technology really solve the trust problem?

The distributed architecture and non-tampering characteristics of blockchain technology can help solve problems such as the authenticity of bills and opaque information. When parties need to verify whether a note has been tampered with or transferred, the blockchain can provide indisputable proof of consistency.
Digital currency also takes advantage of this feature of blockchain. Puyin is a tea-based digital currency developed based on blockchain technology.

The value of blockchain technology What kind of problems does the Internet solve?

Analysis of Chongqing Jinwowo:
First, through its application in the field of digital currency, blockchain provides a solution for the flow of capital flow (or capital flow) information on the Internet.
Secondly, the blockchain solves the problem of confirmation of authority during the transaction process through encryption and reference to distributed ledgers.
Thirdly, the blockchain determines the exchange of digital assets through the technology of consensus mechanism.

IV Application aspects of blockchain

The main application scope of blockchain includes: digital currency, transaction settlement of financial assets, digital government affairs, certificate deposit and anti-counterfeiting data services and other fields. Blockchain is a database technology that links data blocks in an orderly manner. Each block is responsible for recording a file data and encrypting it to ensure that the data cannot be modified or forged.

Blockchain is essentially a distributed database system that uses cryptography technology for multi-party participation, joint maintenance, and continuous growth. It is also called a distributed shared ledger. Each page in the shared ledger is a block, and each block is filled with transaction records. The anonymity, decentralization, openness, transparency, and non-tamperability of blockchain technology make it highly favored by enterprises and has gained More extensive application attempts.

Blockchain application scope 1. Financial field

Blockchain can provide a trust mechanism and has the potential to change the financial infrastructure. Various financial assets such as equity, bonds, bills, warehouse receipts, fund shares, etc. It can be integrated into the blockchain technology system and become a digital asset on the chain, which can be stored, transferred and traded on the blockchain.

The decentralization of blockchain technology can reduce transaction costs and make financial transactions more convenient, intuitive and secure. The combination of blockchain technology and the financial industry will inevitably create more and more business models, service scenarios, business processes and financial products, thereby bringing more impact to the development of financial markets, financial institutions, financial services and financial formats. . With the improvement of blockchain technology and the combination of blockchain technology with other financial technologies, blockchain technology will gradually adapt to the application of large-scale financial scenarios.

2. Public service field

Traditional public services rely on limited data dimensions, and the information obtained may not be comprehensive enough and have a certain lag. The non-tamperable nature of the blockchain makes the digital certification on the chain highly credible. It can be used to establish new authentication mechanisms in the fields of property rights, notarization and public welfare, and improve the management level of public services.

Relevant information in the public welfare process, such as donation projects, fundraising details, fund flows, recipient feedback, etc., can be stored on the blockchain to meet the privacy protection of project participants and other relevant laws and regulations. Under the premise of requirements, public disclosure will be made conditionally to facilitate public and social supervision.

3. Information security field

Using the traceability and non-tampering characteristics of blockchain, we can ensure the authenticity of data sources and ensure the non-forgery of data. Blockchain technology will fundamentally change information Security issues of the propagation path.

BlockchainFor the field of information security, it is reflected in the following three points:

User identity authentication protects data integrity protection and effectively prevents DDoS attacks

The distributed storage architecture of the blockchain will make hackers confused. Some companies have begun to develop blockchain-based The distributed Internet domain name system of the blockchain eliminates the root cause of the current DNS registration shortcomings and makes the network system cleaner and more transparent.

4. Internet of Things field

Blockchain + Internet of Things can allow each device on the Internet of Things to operate independently, and the information generated by the entire network can be protected through smart contracts in the blockchain.

Security: Traditional IoT devices are highly vulnerable to attacks, data loss and maintenance costs are high. Typical information security risk issues for IoT devices include low firmware versions, lack of security patches, permission loopholes, too many device network ports, and unencrypted information transmission. The blockchain's consensus mechanism for network-wide node verification, asymmetric encryption technology and distributed data storage will significantly reduce the risk of hacker attacks.

Trustability: The traditional Internet of Things is managed and controlled by a centralized cloud server. Due to the security of the device and the opacity of the centralized server, it is difficult to effectively protect user privacy data. The blockchain is a distributed account book. Each block is interconnected and has its own independent working ability, ensuring that the information on the chain will not be tampered with at will. Distributed ledgers can therefore provide trust, ownership records, transparency and communication support for the Internet of Things.

Effectiveness: Limited by cloud services and maintenance costs, the Internet of Things is difficult to achieve large-scale commercial use. The traditional Internet of Things realizes communication between things through centralized cloud servers. The disadvantage of this model is that as the number of access devices increases, the server faces more load, requiring enterprises to invest a lot of money to maintain the normal operation of the IoT system.

Blockchain technology can directly realize point-to-point transactions, omitting the labor expenditure of other intermediaries or personnel, which can effectively reduce the costs incurred by third-party services and maximize benefits.

5. Supply chain field

The supply chain consists of many participating entities, with a large amount of interaction and collaboration. Information is discretely stored in their own systems, lacking transparency. The lack of smooth information makes it difficult for various participating entities to accurately understand the real-time status and existing problems of related matters, affecting the collaborative efficiency of the supply chain. When disputes arise between parties, it is time-consuming and laborious to provide evidence and pursue accountability.

Blockchain can make data open and transparent among various entities, thereby forming a complete, smooth, and non-tamperable information flow throughout the entire supply chain. This can ensure that all entities promptly discover problems arising during the operation of the supply chain system and find targeted solutions, thus improving the overall efficiency of supply chain management.

6. Automotive Industry

Last year announced a partnership using blockchain to build a proof of concept to streamline the car rental process and build it into a “click, sign up, and drive” process. Future customers choose what they want A rental car enters the blockchain’s public ledger; then, sitting in the driver’s seat, the customerSign lease agreements and insurance policies, and the blockchain updates the information simultaneously. It’s not just imagination, this type of process could become a reality for car sales and car registrations as well.

7. Stock Trading

For many years, many companies have worked to make the process of buying, selling, and trading stocks easier. Emerging blockchain startups believe that blockchain technology can make this process more secure and automated than any previous solution. At the same time, blockchain startup Chain is working with Nasdaq to achieve this through blockchain. Equity transfer of private companies

8. Government management

Government information, project bidding and other information are open and transparent. Government work is usually subject to public attention and supervision, because blockchain technology can ensure the transparency and immutability of information. , which plays a great role in the implementation of transparent government management. There is a certain degree of information opacity in government project bidding, and companies also have the risk of information leakage during the sealed bidding process. Blockchain can ensure that bidding information cannot be tampered with, and can ensure the transparency of information, forming a shared trust among competitors who do not trust each other. And it can arrange subsequent smart contracts through the blockchain to ensure the construction progress of the project and prevent the growth of corruption to a certain extent.

There are many more applications of blockchain technology, and this is just a fulcrum of blockchain applications. In the future, blockchain technology will be applied everywhere

IV What is blockchain technology What exactly is blockchain? What is blockchain

1. The so-called blockchain technology, referred to as BT (Blockchain technology), also known as distributed ledger technology, is an Internet database technology that is characterized by decentralization, openness and transparency, allowing everyone to participate in database records.

Explain in layman’s terms: If we assume that the database is a ledger, reading and writing the database can be regarded as an accounting behavior. The principle of blockchain technology is to find out the accounting information within a period of time. The fastest and best person will keep accounts, and then send this page of information to everyone else in the entire system.

2. Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of Bitcoin, it is a series of cryptographic methods related to each other. Each data block generated contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

(5) What is the account page in the ledger similar to in the blockchain? Extended reading:

The blockchain system consists of a data layer and a network layer , consensus layer, incentive layer, contract layer and application layer. Among them, the data layer encapsulates the underlying data blocks and related basic data and basic algorithms such as data encryption and timestamps;The network layer includes distributed networking mechanisms, data dissemination mechanisms, data verification mechanisms, etc.; the consensus layer mainly encapsulates various consensus algorithms of network nodes.

The incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly encapsulates various scripts, algorithms and smart contracts, and is the The basis of the chain's programmable features; the application layer encapsulates various application scenarios and cases of the blockchain.

VI What is blockchain and what are its applications in life

Blockchain is distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. New application models of computer technology. (The consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system). Blockchain technology is a technology that uses a decentralized consensus mechanism to maintain a complete, distributed, and tamper-proof ledger database. It allows participants in the blockchain to establish a trust relationship without Under the premise of realizing a unified ledger system. In layman's terms, the blockchain is a general ledger that contains all historical transactions, and each block contains several transaction records. If the blockchain is a ledger, then a block is one page of the ledger. Details of transactions are recorded on a public ledger that can be seen by anyone on the network.

A block is a collection of many transaction data, which is marked with a time stamp and a unique mark of the previous block. Valid blocks will be appended to the main blockchain after they are unanimously recognized by the entire network. Blockchain is a data structure in which blocks containing transaction information are linked in order from back to front. The most well-known application of blockchain technology in the virtual currency market is Bitcoin.

At 3:00 pm on September 4, 2017, the People's Bank of China and seven other departments jointly issued the "Announcement on Preventing Token Issuance Financing Risks", defining ICO as "an illegal public offering without approval" Financing behavior,” the regulatory authorities also stated that all types of token issuance and financing activities should be stopped immediately, and organizations and individuals that have completed token issuance and financing should make arrangements such as withdrawal. A deputy dean said, “It is normal for the rapid development of ICO to attract the attention of regulators. From the perspective of traditional law, ICO is suspected of crowdfunding and raising capital, and it is very risky to allow development without supervision. A large number of unpromising projects are even deceptive in themselves, which not only makes investors bear huge risks, but also makes real blockchain entrepreneurial teams complain a lot, which actually has the adverse consequences of bad coins driving out good coins. A large number of retail investors and even 'aunts' ''s admission is a bellwether - it's time for ICOs to require regulatory intervention. This rectification is mainly about risk warnings and protecting investors' interests."

ICOs issue not stocks but numbers Currency, generally called tokens, blockchain startups use crowdfunding to exchange digital currencies such as Bitcoin and Ethereum to achieve financingEntrepreneurial purpose. Blockchain investors and entrepreneurs are very optimistic about blockchain technology and believe that the strong supervision by government departments is a good thing for the blockchain industry. By governing ICOs and expelling bad digital currencies, the blockchain can develop smoothly. More robust. It is hoped that this supervision can truly crack down on MLM coins and air coins, identify and treat blockchain innovation projects that are truly serious entrepreneurship, and protect the interests of serious investors and entrepreneurs.

Blockchain technology can play its role in banking, mobile payments and other fields.

VII What does blockchain use to record ledgers

Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is essentially a decentralized database.

For example, if you are a woman, every time your boyfriend says something disgusting to you or promises to buy you something, you immediately record it and send it to all your and his best friends. , classmates, colleagues, and various groups and circles of friends, he can no longer deny it. This is called blockchain.

The core advantage of blockchain technology is decentralization. It can realize decentralization-based decentralization in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. The point-to-point transactions, coordination and collaboration of centralized credit provide solutions to the common problems of high cost, low efficiency and insecure data storage in centralized institutions.

The application fields of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. The popularity of blockchain and Bitcoin has led to many related top domain names. have been registered, which has had a relatively large impact on the domain name industry.

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Ⅷ What is the blockchain economy? The most important thing about the blockchain economy is the ledger

1. What must be mentioned in the blockchain economy is the ledger. There is a block in every chain. The ledgers are also everywhere. At the same time, these ledgers It does not just record transactions, but is composed of some regular data.

2. Fundamentally, ledgers describe economic and social relationships. Agreement on facts and their changes (i.e. consensus on the contents of the ledger and full trust in the accuracy of the ledger) is the cornerstone of market capitalism. Institutional cryptoeconomics gives us a tool to understand where the blockchain revolution is happening, and what we can’t predict.

3. The blockchain economy is also a phenomenon brought about by blockchain technology. Currently, many companies have adopted blockchain technology, so the value benefits generated by using blockchain technology can be called Because it is a blockchain economy, the economic system in the general environment is also changing. These systems are inseparable from ledgers, so the blockchain economy has inevitable value.

Ⅸ This is what transactions on the blockchain are like

Transactions on the blockchain are actually very simple and not mysterious. To understand transactions on the blockchain, let me first look at a transaction in daily life.

What would happen if the payment method of this transaction was moved to the blockchain? Before talking about blockchain transactions, let’s briefly talk about blockchain transaction accounting.

1. What is blockchain

Blockchain is simply B’s ledger. A block is a page in this ledger, used to record transaction information. For example: On December 14, 2017, a computer was sold and a profit of 5,000 yuan was made. All blocks are strung together in order to form a blockchain, that is, a ledger.

2. Characteristics of blockchain

Blockchain is a distributed accounting network. If it is difficult to understand, you can compare it with Alipay, a centralized accounting network, as shown below: < /p>

The central approach is like having only one accountant. Only this accountant knows how the transaction is going. Distribution is like a bunch of people keeping the same account and making a transaction, everyone knows about it. A relatively small group with only one person knowing the information. An information disclosure and transparency.

3. Blockchain transaction accounting

In Alipay’s centralized accounting network, transfers only require Alipay to confirm and record the transfer behavior, and then the transfer can be completed and recorded. .

In the blockchain of the distributed accounting network, each transfer transaction will be sent to each node and confirmed by them before the transfer can be completed and recorded.

To put it simply, one person has the final say in a centralized accounting network, while everyone has the final say in a distributed accounting network. If anyone lies or commits fraud, they will be able to spot it quickly because everyone has a copy in their hands. Exactly the same ledger.

If A chooses Alipay to transfer payment to B, the operation process is as follows: open Alipay -> click on transfer -> enter the other party's Alipay account -> enter the transfer amount -> click to confirm the transfer -> enter the password. Whoosh, the money was in account B.

If A chooses to pay B with BTC, if the current 1 BTC = 100,000 yuan, then A needs to pay 0.05+0.001 = 0.051 BTC to B, of which 0.001 BTC is the mining fee.

The operation process is as follows:

In terms of operation, the transfer process is similar. Maybe you don’t understand what an address is? What the hell is the mining fee? What are those 6 confirmation numbers? No rush, come one by one.

1. Blockchain address

The address can be understood as B’s Alipay account. When A transfers money to B, he naturally needs to know the other party’s “account number”, soOnly then can the money be transferred. The following is a BTC address:

It is a string composed of numbers and letters.

How is this address generated? It is generated by the public key through a one-way hash function. You can leave it alone and it is automatically generated. Unlike Alipay, you can choose the Alipay account name according to your personal preferences when applying for an account.

What else can the address be used for? To check the "account" balance and transfer transactions, you can check the balance and transfer records under any valid BTC address on the btc.com website, as shown in the following figure:

2. Transaction confirmation number

In the blockchain distributed accounting network, every transfer transaction is confirmed by a node in the network, and one transaction confirmation number is recorded. However, it will take a long time for the transfer to take effect only after confirmation from all nodes in the network. Therefore, in the BTC network, based on design calculations, when 6 transaction confirmations are obtained, the transaction can be considered very safe, the transaction takes effect, and the transferred BTC can be received.

3. Mining fees

Mining fees are the "tips" paid by A to the BTC network provider when A transfers money to B to encourage them to provide services for the BTC network. The "tip" can be adjusted. The more "tip" you give, the faster the transfer speed will be.

4. Transaction progress query

BTC transfer generally takes 0.5~1h. Faced with such a long time transfer, it is inevitable to check the transfer progress to comfort the anxious mood. How to check it? ?

You can query by address, as above. It can also be queried by TxID.

What is TxID? TxID is the abbreviation of transaction ID, which translates to: transaction ID.

When the transaction information is packaged and sent to the network, a TxID will be generated, but it is used to view transaction-related information, somewhat similar to a receipt. The status of any transaction ID can be queried through the btc.com website, as shown in the query result below:

At this point, you can easily transfer transactions on the blockchain, check account status and transfer progress.

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