区块链删除交易,区块链删除过期数据

区块链技术是一种分布式账本技术，它可以帮助用户安全地删除交易和过期数据。这种技术可以帮助用户保护他们的隐私，同时也可以帮助企业管理和存储数据。以下是三个与区块链删除交易和过期数据有关的关键词：

去中心化：去中心化是区块链技术的基础。去中心化意味着没有一个中心服务器或组织来管理网络。去中心化的网络由许多节点组成，这些节点可以是个人或组织。每个节点都可以接收和发送数据，并且可以验证交易的有效性。去中心化的网络可以更安全地处理数据，并且可以有效地防止数据的篡改和删除。

数据完整性：数据完整性是指数据在传输过程中不会受到任何破坏。区块链技术可以有效地保证数据的完整性，因为它使用了分布式账本技术。分布式账本技术可以确保数据在传输过程中不会被篡改。此外，由于区块链技术是去中心化的，因此可以有效地防止数据的删除。

智能合约：智能合约是一种由计算机程序执行的协议，它可以用于处理交易和过期数据。智能合约可以自动执行，因此可以有效地实现删除交易和过期数据的目的。此外，智能合约还可以有效地保护用户的隐私，因为它可以确保交易信息的安全性。由于智能合约可以自动执行，因此可以有效地节省企业的时间和成本。

以上是三个与区块链删除交易和过期数据有关的关键词，它们可以帮助企业更安全地管理和存储数据。去中心化可以有效地防止数据的篡改和删除，数据完整性可以确保数据在传输过程中不会受到任何破坏，而智能合约可以有效地实现删除交易和过期数据的目的。

㈠Why the data on the blockchain disappears

Why the data in the blockchain ecosystem escapes
1.
Speciality escapes :Some data is very valuable to the capabilities of the application. For example, a user's preferences are a data type that is advantageous to remain private. You don't need to use a protocol to consume the preference data, so it doesn't need to be stored in the shared data layer. But if you want to build a defensible business with a competitive advantage, it's what you need. Data exodus occurs when this type of data is extracted and stored outside the blockchain ecosystem.
2.
Validity flight: Some data stored on the blockchain is completely useless. Since blockchain is an unstructured database, there is no point in storing data that needs to be searched and organized on a shared data layer. This will be invalid. "Flight-to-effect" occurs when useless data on the blockchain is stored in a structured database, etc., making it more useful.
3.
Economic flight: Storing data on the blockchain is expensive. While it is technically possible to store non-text files on the blockchain, it is prohibitively expensive.
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㈡ Is abey digital currency reliable?

Huang Lianjin: First of all, the abbreviation of A-B-E-Y means "focus enhancement" Advanced Blockchain for Enhanced Yields”. It came out in 2018. The main purpose of ABEY's existence is to essentially improve the operational efficiency of the blockchain so that this revolutionary technology can be truly popularized on a large scale.

As we all know, the biggest bottleneck limiting the popularity of blockchain has always been its slow transaction speed. The Bitcoin network can only handle seven transactions per second, while the Ethereum network can only handle a maximum of 20 transactions per second. Therefore, after more than 10 years of Bitcoin's existence, most people still have only heard of blockchain but rarely use this technology.

ABEY was developed to solve the inefficiency of blockchain and the difficulty in widespread popularization. It is an independent public chain. ABEY adopts a unique on-chain governance method and chain structure. For example, ABEY is working on how to use only 50 active blocks in the chain. When a new block is created, the oldest block is removed from the tail of the chain. But its data will still be retained and archived. If such architecture research is successful, the entire chain can be made shorter, lighter, and more responsive. ABEY takes an average of 2 minutes to create a new block. Multiple studies have proven that this is close to the optimal time for block generation - ABEY is more efficient than traditional blockchain technology (such as Bitcoin) many.

2,Interesting. You just mentioned that both blockchain and Ethereum operate relatively inefficiently. So what level can ABEY reach?

Huang Lianjin: Theoretically, ABEY’s transaction processing efficiency can continue to expand with user needs. Efficiency changes will also depend on the type of actual use case. For example, the first use case built on the ABEY blockchain core is the aPay Systems Payment Services (aPay) platform. According to the project team, its current efficiency has surpassed the speed and throughput of the VISA/Mastercard credit card system.

In terms of functionality, the aPay platform internally supports the instant conversion of Bitcoin, Ethereum, Bitcoin Cash and Litecoin into a stable currency called ACT (or aCash) (pegged to the value of the US dollar) . Once a user obtains ACT, they can start using it to conduct transactions with other aPay users.

In addition, users will soon be able to load ACT into aPay encrypted debit card, and then make purchases at any merchant (online and offline) that accepts VISA/Mastercard, and Fiat currency can be withdrawn from any ATM around the world. aPay’s goal is to become a bridge between cryptocurrency and the real world, and to officially bring cryptocurrency into the mainstream business world.

3. From this point of view, aPay will promote the large-scale application of blockchain technology in e-commerce. In addition, what other achievements does the ABEY team are proud of?

Huang Lianjin: ABEY has built a loose coupling smart contract execution architecture. This means that people can use any programming language, or compiler to develop smart contracts in the ABEY platform. In contrast, developers will not be limited to the development restrictions in the Ethereum ecosystem, which will reshape the way smart contracts are built and run on the blockchain.

The first smart contract in the ABEY ecosystem was written in C language (C language ranks among the top three most common programming languages ​​in the world). Currently, there are more than 5.4 million known developers of the C and C++ languages ​​around the world – compared to less than 10,000 Solidity developers in the Ethereum ecosystem. In 5-6 years, the developer expansion rate of the Ethereum ecosystem is expected to still be relatively slow.

iii How to use blockchain to improve the governance capabilities of charities

Good question.
Here I can only briefly talk about two uses that I can think of. As for how to implement it specifically, I still recommend that the subject learn the principles and technical details of blockchain in depth.
Charitable organizations are often misunderstood and suspected by the public regarding their financial transparency. You may suspect that money is not spent where it should be spent, or that money is spent indiscriminately.
1) If you useUsing blockchain, the actual use and source of each payment can be easily recorded and tracked. For example, person A donated 1,000 yuan, and the charity divided the 1,000 yuan into several donations to different people. Using blockchain can easily record where each dollar donated by A went. At the same time, the recipient's money can be recorded from whom each piece of money comes from.
2) Using blockchain can prevent someone from maliciously tampering with financial data. Because deleted blocks and modified blocks will be easily discovered. False accounts will have no place to hide.
Of course, to achieve this requires the cooperation of other technologies.

㈣ How to delete Binance Chain transfer records

Binance Chain transfer records cannot be deleted. Virtual currency wallet transaction records cannot be deleted or deleted. What can be deleted about Sun Nai is only the superficial record. The virtual currency we are talking about now generally refers to digital currencies such as Bitcoin and Ritecoin. They are all digital currencies developed based on blockchain technology. Transaction records will be recorded on the blockchain and no one can conduct them. Modifications can be made by anyone.

Can the data in the blockchain be modified?

The ideal state cannot be modified. The blockchain can only be added but not modified or deleted. Although Ethereum can modify and delete account data, it is only at the state machine level. It is a state transition through transactions or events. The previous state will not be modified or deleted.
If it is a POW algorithm: such as Bitcoin, etc. Users tend to synchronize new chains with the best computing power. And each transaction will be delayed by 6 blocks. So whenever we create a fake block, we usually need to make all the POW of the first six blocks at the same time, and the cumulative POW of these 6 blocks needs to be larger than the real main chain (the main chain is jointly maintained by honest users) Only a high POW can guarantee success every time, so you need to master 51 computing power

㈥ Can the future value of ABEY surpass Bitcoin?

It is possible. Abey uses "constant lightweight blockchain technology". During the operation of abey, there are always only 50 active blocks, so the size of abey's blockchain will always remain unchanged. Previously generated blocks can also be saved and downloaded, and new blocks are generated and added to the constant blocks. At the same time, the oldest block is removed from the constant block and the oldest block is archived, which is beneficial to increased throughput and low bandwidth consumption. ABEY is considered to be an optimized blockchain technology created for high transaction volumes, so ABEY has a good chance of surpassing Bitcoin.

㈦ Popular explanation of what blockchain is

Question 1: What is blockchain? Can you explain the principle of 10-point blockchain in plain language: decentralization A distributed accounting system
The core of blockchain technology is that all currently participating nodes jointly maintain transactions and databases. It makes transactions based on cryptographic principles rather than trust, so that any two parties who reach an agreement,Payment transactions can be performed directly without the involvement of a third party.
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Technically speaking, a block is a data structure that records transactions, reflecting the flow of funds for a transaction. The blocks of transactions that have been reached in the system are connected together to form a main chain, and all nodes participating in the calculation record the main chain or part of the main chain. A block contains the following three parts: transaction information, hash hash formed by the previous block, and random number. Transaction information is the task data carried by the block, specifically including the private keys of both parties to the transaction, the number of transactions, the digital signature of electronic currency, etc.; the hash formed by the previous block is used to connect the blocks to realize the past The order of transactions; random numbers are the core of transaction completion. All miner nodes compete to calculate the answer to the random number. The node that gets the answer the fastest generates a new block and broadcasts it to all nodes for update, thus completing a transaction.
1.1 What is Blockchain
Blockchain (BlockChain) refers to a technical solution that collectively maintains a reliable database through decentralization and trustlessness. This technical solution mainly allows any number of nodes participating in the system to associate and generate a series of data blocks (blocks) using cryptographic methods. Each data block contains all the information exchange data of the system within a certain period of time, and generates The data fingerprint is used to verify the validity of its information and chain to the next database block.
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In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. Behind all systems there is a database, which is a big ledger. Then who will keep this ledger becomes very important. At present, it is whoever owns the system who keeps the accounts. Each bank’s account books are kept by each bank, and Alipay’s account books are kept by Alibaba. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are new transaction data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write the recorded content to the ledger, and Send the contents of the ledger during this period to all other people in the system for backup. In this way, everyone in the system has a complete ledger. Therefore, this data becomes very safe. A tamperer needs to modify more than half of the system node data at the same time to truly tamper with the data. Such tampering would be extremely costly, making it nearly impossible. For example, Bitcoin has been running for more than 7 years. Countless hackers around the world have tried to attack Bitcoin, but so far there have been no transaction errors. It can be considered that the Bitcoin blockchain has been proven to be a safe and reliable system.
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1.2 Why is there blockchain innovation?
Human beings need to communicate during their activities, and communication is based on information. In the past, information circulation was not convenient enough to satisfy market participants. There is a demand for information, so intermediaries and centers are born. This kind ofThe centralized system has the problems of high cost, low efficiency, value dispersion, "information islands" and insecure data storage. However, due to technical and environmental factors, this system continued to operate for many years until the emergence of the Internet. The starting point of the first generation of the Internet is the TCP/IP protocol, which is an open code that implements a unified format for peer-to-peer transmission of information by all nodes on the network, and brings the basic values ​​of freedom and equality required by a global unified market into programmed, protocol-based, and reliably Execution. The Internet eliminates low-value, high-cost intermediate chains and achieves low-cost and high-efficiency global information transmission in a decentralized manner.
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However, the first generation of the Internet did not solve the problem of information credibility. Activities that can be decentralized on the Internet must be activities that do not require credit endorsement, and activities that require credit guarantee must be activities involving centralized third-party intermediaries. Therefore, Internet technology that cannot establish global credit has encountered great obstacles in its progress - people cannot participate in any value exchange activities on the Internet in a decentralized manner. To realize value exchange, people still need third-party intermediaries based on credit (such as banks, clearing agencies, exchanges). The global centralized credit system still has problems such as high operating costs, low efficiency, and vulnerability to attacks and damage. For example, each country's legal currency has different credit values ​​and incompatible clearing systems, which adds a lot of cost to global trade.
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Therefore, what the second generation Internet must break through is: how to establish global credit in a decentralized manner? Let...>>

Question 2: What is blockchain? What does it mean in layman’s terms? What is China’s attitude towards blockchain? What can blockchain do? Blockchain, a great technology that accompanied the birth of Bitcoin, is currently being used in the financial field to significantly reduce transaction costs and improve efficiency, which is enough to excite Wall Street. However, this is just the tip of the iceberg. Its potential applications are very broad and will subvert every aspect of our lives in the future.
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. One of the most basic characteristics of Bitcoin is decentralization. In recent months, financial giants have gradually begun to pay attention to Bitcoin's technology and used it in non-monetary fields, such as stock trading, election voting, etc. (1) Art Industry
Artists can use blockchain technology to declare ownership and issue numberable, 100% edition works in digital form for any type of artwork. It even includes a marketplace where artists can buy and sell through their website without the need for any intermediary services.
(2) Real estate industry
Use blockchain technology to solve various problems faced by everyone involved in real estate, including the naming process, land management, etc.Local registration, agency intermediary, etc.
(3) Insurance industry
The financial industry has always been the most sensitive to advanced technology. Traditional banking and securities industry giants have been involved in the booming blockchain venture capital investment since 2014, with total global investment reaching US$1 billion within two years.
(4) P2P wallet
Personal assets can be traded through this P2P wallet in the future without going through any central institution, such as Bitcoin.
Most blockchains are in their infancy, mainly overseas. There are very few good domestic blockchain projects, so it is not recommended for any non-professionals to invest in blockchain projects. If you are very interested in blockchain technology and have a technical or financial background, it is recommended that you consider starting a business in this area. In terms of the blockchain protocol system, the lowest layer is the underlying technology of the blockchain, including the technical protocols of the blockchain, as well as some platform routing and basic algorithms; in the middle layer, some application interfaces and some credentials must be solved Issuance and verification, including some industry platform services, big data analysis, etc. This is a very rough classification, and there should be more detailed classifications; the top ones are some applications of blockchain, including finance Some applications and some applications in other aspects, the Internet of Things and so on.
Introduction to Bubi Blockchain
Bubi Blockchain has been focusing on the research and development and innovation of blockchain technology and products since its establishment. It has a number of core technologies and has achieved substantial results in many aspects. Radical innovation has resulted in a number of core technological achievements, such as: mathematically provable distributed consensus technology, fast large-scale ledger access technology, multi-chain general ledger technology that supports business expansion, and interconnection technology between heterogeneous blockchains. wait. On April 25, "Gege Points" introduced the concept of blockchain into the points system, jointly opened it up with multiple parties, issued and redeemed points, and promoted the circulation of points. Each cooperative institution can jointly participate in transaction verification, ledger storage, and real-time settlement; the third-party payment platform of the enterprise points issuer makes the entry and exit of points more flexible. Bubi has developed its own basic blockchain service platform, which has been applied in equity, supply chain, points, credit and other fields. Bubi has been committed to building an open value circulation network with decentralized trust as the core, allowing digital assets to flow freely.
A simple understanding of blockchain is a technology underlying Bitcoin, which is also a peer-to-peer electronic cash system that can realize peer-to-peer value delivery. We should distinguish between Bitcoin, Bitcoin blockchain, blockchain and blockchain. Blockchain technology and other concepts. In countries with relatively developed finance in the past, finance and blockchain technology have a long history, and the legislation of digital currencies and blockchain networks is also very important. With the advent of the financial era, large financial institutions are studying blockchain technology. They have their own teams and conceptual technologies. Slowly, banks in various regions are also participating in digital currency discussions. The application and support of this technology are not only that. The impact of blockchain on enterprises is alsoIt is huge. For larger domestic enterprises, Bubi Block is also used in various equity, supply chain, points and other fields. Major domestic financial institutions and enterprises have taken a fancy to the value of the new industry and developed their own zones. Blockchain platform, blockchain has instantly become a new innovative industry in China. In terms of overseas internationalization, the United States has already obtained 15 blockchain patents at the end of last year compared to China. Blockchain financial applications are entering a new stage in an all-round way. Various applications will become more and more in-depth, and related changes will also become more and more profound. It has attracted more and more attention and will form a huge new trend... >>

Question 3: What is blockchain technology? What exactly is blockchain? What is blockchain? 1. Data blockchain is an important concept in the Bitcoin financial system. It records transaction record data on the entire Bitcoin network, and these data are shared by all Bitcoin nodes. Through the data block, we can query each transaction record. A look at the history of Bitcoin transactions. 2. Example: There are three persons A, B, and C. All funds of A and B are kept by C. And every financial transaction must be recorded by C. Now assume that A and B each have 1 million in custody of C. Then: A spends 80,000 yuan to B, then C's account book record will subtract 80,000 yuan from A's name, and add 80,000 yuan to B's name. If B transfers 50,000 yuan to A, C will add 50,000 yuan to A's name and subtract 50,000 yuan to B's name in the account book. A spends 50,000 yuan to B, then C's account book record will subtract 50,000 yuan from A's name, and add 50,000 yuan to B's name. 3. The role of the data blockchain is similar to that of C’s account record book. It records the user’s ownership of Bitcoin and the records of all users’ Bitcoin transactions. It’s just that this “account record book” is recorded by the mining software of every Bitcoin miner on the network. If a Bitcoin transaction is confirmed by the data blockchain, the relevant information will be recorded in the data blockchain. Bitcoin’s “account record book” is called the data blockchain. All data blockchains on the network form Bitcoin’s distributed network database system. 4. The essence of data blockchain technology is a decentralized and distributed structure of data storage, transmission and certification methods. It uses data blocks to replace the current Internet's dependence on central servers, so that all data changes or transaction items are recorded. On a cloud system, the self-certification of data during data transmission is theoretically realized. In a far-reaching sense, this transcends the traditional and conventional information verification paradigm that relies on a center and reduces the cost of establishing global "credit." This point-to-point verification will produce a "basic protocol", a new form of distributed artificial intelligence, and will establish a new interface and shared interface for human brain intelligence and machine intelligence.

Question 4: What is blockchain: This explanation of blockchain is more understandable. Blockchain refers to a technology that collectively maintains a reliable database through decentralization and trustlessness.technical plan.
In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. There is a database behind all systems. You can think of the database as a big ledger. Then who will keep this ledger becomes very important. At present, it is whoever owns the system who keeps the accounts. WeChat’s account books are kept by Tencent, and Taobao’s account books are kept by Alibaba. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are any data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write his recorded content into the ledger, and record this Within a period of time, the contents of the ledger are sent to all other people in the system for backup. In this way, everyone in the system has a complete ledger. In this way, we call it blockchain technology.
Blockchain technology has become the darling of the financial community in China and has become a hot topic. Domestic Puyin Group has launched Puyin, a tea-based digital currency.

Question 5: Explain in an easy-to-understand manner what blockchain is. Blockchain can be understood as a database system in a sense. The development of blockchain can be divided into 1.0 and 2.0
1.0 is represented by Bitcoin, and its main application is virtual currency or digital currency application. The blockchain at this time can only be used for simple digital currency transactions.
2.0 is represented by the now popular ethereum (Ethereum) and the upcoming hyperledger. The blockchain at this stage can not only meet the corresponding digital currency transactions, but also use smart contracts to customize currency or asset transactions. If we use the database analogy, the emergence of smart contracts can be understood as allowing users to define functions or stored procedures in the database and call and execute them.
Different from traditional databases, the blockchain introduces consensus mechanism, incentive mechanism, p2p (network), hash and other specific elements, making it open, decentralized and non-tamperable. characteristic.

Question 6: What is blockchain? Can anyone explain it in simple terms? Blockchain is the underlying technology of Bitcoin. It is like a ledger that records all transactions. It is decentralized. What is decentralization? For example, when you buy something on Taobao, you place an order and pay it to Alipay. Alipay will not transfer the money to the seller until you receive the goods. Alipay is the third party in that center. Without it, it means decentralization, just like buying things offline. If you pay with one hand and get the goods with the other hand, there is no third party.
The blockchain itself is a series of cryptographically related data blocks generated.
Look carefully to see if it looks like a ledger. The pieces one by one are blocks, and connected together they are the blockchain.
Many companies are developing this technology, including ours, and its prospects are incredible. For details, you can go to our official website and hope to adopt it, thank you

Question 7: What is blockchain technology? What is blockchain? How to explain the concept of blockchain? People in each industry have different understandings, and relevant explanations are gradually emerging due to more and more real-life applications. With the popularization of this blockchain technology, the related results are getting bigger and bigger. If we want to understand this technology, we must have an in-depth understanding of reality.
In the past six months, the concept of blockchain has gradually become popular in China, and a blockchain whirlwind has taken off in the financial circle. Blockchain has attracted the attention and favor of more and more people in the industry due to its unique technical advantages. Blockchain technology, which is decentralized (or multi-centered), highly transparent, cannot be tampered with, and has no single point of failure, is entering the field of vision of financial institutions and enterprises. It has at least been used in digital currency, payment exchange, registration and settlement, Digital assets, traceability and anti-counterfeiting, supply chain, Internet of Things and many other fields have moved from theoretical discussions to practical applications.
"Blockchain" was first introduced with "Bitcoin" released in early 2009. Blockchain has become the basic protocol and technical application for the launch, recording, and circulation of Bitcoin. Although Bitcoin has been controversial since its inception and cannot even be regarded as a "currency" by governments and monetary authorities, the blockchain technology used in Bitcoin has been recognized by governments, including governments and monetary authorities. extensive attention.
Why has blockchain become a rapidly heating up hot technology and topic?
The most important of these may be that the launch of Bitcoin based on blockchain technology has opened up a new relationship with traditional society ( The exploration and attempt of brand-new technologies and rule systems such as Internet user identity verification, wealth confirmation, transaction records, notarization and verification, which have little connection with offline) and are fully applied in the online world (online), provide people with the opportunity to adapt to the Internet society. Development provides alternative paths and unlimited imagination.
Judging from its application in Bitcoin, blockchain is a set of new network blocks (BLOCK, also called communities) formed by combining encryption technology with the Internet. Bitcoin configuration, netizen identity verification, and Bitcoin (value) confirmation formed by mining, Bitcoin transaction records, and extended encryption of Bitcoin cross-block flow (value transfer) (added block and transaction time identification, etc. Internet protocol rules and accounting (Ledger) system including block chain, full encryption, mutual authentication, etc., including factor) registration and verification. Precisely because Bitcoin is not a substitute for offline legal currency, but is issued and managed by non-legal currency authorities, mainly imitating the model of gold, and is completely new and decentralized protected and supported by basic Internet protocols and strict encryption technology. Internet currency (virtual currency), thus forming a set of different andNew currency rules and systems that are not subject to real social laws and can be bought, sold or exchanged with legal currency. It has been more than 8 years since Bitcoin was launched. There has been no record of funds or user information being stolen. Its security has been verified, and its efficiency and cost of fund settlement also have obvious advantages. This has made people's confidence in the blockchain technology used in Bitcoin continue to increase, and people have become more and more aware that although blockchain is a technology and protocol pioneered and applied by Bitcoin, the blockchain Chain is not the same as Bitcoin, and its application is by no means limited to Bitcoin. The application of blockchain can be decentralized or centralized; it can be a public chain model or a private chain model. Therefore, after Bitcoin, blockchain technology is also constantly developing and innovating, and constantly exploring new application areas, especially in the financial field.
The reason why blockchain is valued highly by more and more people is because the development and widespread application of the Internet have caused more and more economic exchanges and transaction activities to be conducted online, and the online world (or online world) society) is rapidly expanding, enriching and active, and online transactions must solve the efficiency and security protection issues of the parties' identity verification, value verification, transaction records, inspection and verification, etc., and require strict intermediaries and agreements (rules or constitutions). In this regard, traditional thinking and customary practices are to follow the development trajectory of the transfer of offline transactions to online and push the common rules and practices of the real (offline) society to the online (network) society. However, in practice, it is increasingly It is difficult to adapt to the needs of online transactions.
For example, for the identity verification of the parties, the natural choice is to use the information on the identity documents protected by the laws of various countries as the basis, and then add account or transaction passwords, as well as facial recognition, iris, fingerprints and other biometrics to conduct online transactions. Verification, but this method first makes the citizen identity information in the cross-border interconnected online world subject to the administrative jurisdiction of real society... >>

Question 8: Easy to understand Explain clearly what is blockchain. The English name of blockchain is Blockchain. Block literally means block, block, and chain means chain, chain. Therefore, together they are translated into blockchain.
1. Use cryptography technology to encrypt and decrypt so that records cannot be tampered with. Common blockchain encryption methods include hash algorithm, RSA algorithm, elliptic curve algorithm, etc.;
2. The huge amount of calculation needs to be supported by a reasonable reward mechanism. Because every transaction must be recorded, Bitcoin’s blockchain has more than 60 gigabytes so far. Every new transaction requires confirmation of the information related to the trading account to ensure that the transaction is valid. The huge amount of calculation requires a computer with powerful computing power to complete.
In order to encourage strong computing power to participate, Bitcoin provides two rewards: one is to issue a certain number of bits every dayInstead of giving coins to these computers, all the transfer fees will be rewarded to these computers. (The technical term for these computers is "mining machines", and the people who hold the mining machines are called "miners".)
Biying China is working hard on the digitization of assets and has launched the digital currency crowdfunding platform Biying China.

Question 9: What is the so-called "blockchain"? Blockchain itself is a tool called decentralization and trustlessness. For example, when you graduate from university, the current practice is to have a certificate recognized and issued by an authoritative agency as your certificate. This setting is more troublesome, because this is a piece of paper, and paper can be forged, so there will be various gaps. The issuing authority is also a person, and there will be various gaps in the middle. As long as it is related to people, whoever There are various possibilities related to media. The blockchain provides a great opportunity. As soon as you graduate, you will have a record on the blockchain. No one can change this record. This thing exists objectively. You, as a physical existence , and then as a data existence, the blockchain was born. In this case, anyone who wants to check where you graduated can easily solve the problem. This is similar to the big data often involved in social networking (WeChat) and payment platforms (Alipay, Yibao).

Question 10: What does blockchain mean? Regarding blockchain, I think you have already seen the concept on the Internet. Let me explain it based on my understanding!
First, let’s talk about its characteristics: 1. Openness and transparency 2. Decentralization 3. Anonymity 4. Information cannot be tampered with and eliminated 5. No trust cost
Blockchain is like a public ledger , everyone has the right to record and read, and everyone will jointly supervise to ensure its accuracy, and the recorded content will be permanently saved, and can only be added but not deleted! However, as the number of blocks continues to increase, costs will increase and efficiency will decrease. (I’m not sure whether technology can be used to make up for this. I hope someone who understands technology can point it out.)
Blockchain is divided into public chain, private chain, and alliance chain. Public chain: accessible to everyone, everyone has read and write permissions, completely open, transparent and decentralized. Private chain: Open to individuals or institutions, in which the owner of the private chain can set various permissions to make it partially centralized. Alliance chain: Open to specific organizations or groups, it is also "partially decentralized". According to the ledger at the beginning, members can view and transact, but cannot record and confirm bills, or require permission from the alliance. (The latter two do not have cost and efficiency issues)
Regarding blockchain, countries have begun to recruit talents in this area. For this, you can search online for "Central Bank Recruiting Digital Currency R&D Personnel". In addition, you can increase your understanding of blockchain by understanding its existing applications. What we usually refer to generally refers to public chains. Currently, those used abroad include Bitcoin, Ethereum, etc.There is Xiaoyi Blockchain in China
1. Open and transparent: every piece of data is verified by everyone and can be viewed by everyone at any time.
2. Decentralization: For example, when we shop on Taobao, we conduct transactions through the intermediary Taobao, and blockchain allows both supply and demand parties to directly contact each other for direct transactions through blockchain technology.
3. Anonymity: No personal privacy information is required to complete transactions on the blockchain, only your unique alphanumeric signature is required.
4. Information cannot be tampered with or deleted: Once the data has been verified and recorded, no one has the authority to modify it, let alone delete it!
5. No trust cost: The trust crisis in reality will not appear in the blockchain. Transactions in the blockchain do not require you to trust the other party. Only when both of you have enough "digital assets" to trade can it be carried out, and Under the supervision of the entire network, transactions will not be broken. If you have no idea about the cost of trust, just think about how many intermediaries there are in your city, or just think about Jack Ma, and you will know how big the cost of trust is.
I am still learning more about blockchain. I am Li Ailin. If you have any questions, you can discuss and learn together!

㈧ How AI will change the blockchain

Blockchain is extremely powerful, but it also has its own limitations. Some of these are technology-related, while some come from the antiquated culture inherent in financial services, but all will be affected by AI in some way:
Electricity Consumption: Mining is an extremely Difficult tasks require a lot of power and money to complete. AI has proven to be an effective means of optimizing power consumption, so similar results can also be achieved in blockchain, which may lead to a decline in investment in mining hardware.
Scalability: The blockchain is developing steadily at a pace of 1MB every 10 minutes, and the current total has reached 85GB. Satoshi Nakamoto first proposed "blockchain pruning" (such as removing unnecessary data about fully consumed transactions) as a possible solution, AI could introduce new decentralized learning systems such as federated learning, or Introduce new data sharding technology to make the system more efficient.
Security: Even if the blockchain is almost impossible to attack, the deeper layers and applications of the blockchain are not so secure (such as DAO, Mt Gox, Bitfinex, etc.). The incredible progress made in machine learning over the past 2 years makes AI an excellent ally for blockchain to ensure secure application deployment, especially given the fixed nature of the system's architecture;
Privacy: Privacy issues arising from owning personal data regulatory and strategic concerns about competitive advantage. Homomorphic encryption (operating directly on encrypted data), Enigma project, and Zerocash project are all feasible solutions. This problem is closely related to the previous scalability and security issues, and the importance is the same;
Efficiency: GermanyQin (one of the four largest accounting firms in the world) estimates that the total operating cost of blockchain verification and shared transactions is about $600 million per year. An intelligent system might eventually be able to calculate in real time the likelihood of a particular node being the first to perform a particular task, giving other miners the possibility of choosing to abandon their efforts targeting that particular transaction, thereby cutting down on overall costs. In addition, even if there are certain structural constraints, better efficiency and lower energy consumption may also reduce network latency, thereby making transactions faster;
Hardware: Miners (not necessarily companies but also individuals) make it difficult to Confident money is invested in specialized hardware components. Since power consumption has always been a critical issue, many solutions have been proposed and more will be introduced in the future. As long as the system becomes more efficient, some of the hardware may be converted (sometimes partially converted) to be used by neural networks (mining giant Bitmain is doing this);
Lack of talent: This is a leap of faith, But equally we are trying to automate data science itself, I don't see why we can't create virtual agents that can create new ledgers (or even influence and maintain ledgers);
Data: In the future when all our data All put on the blockchain, companies can buy directly from us and need help authorizing access, tracking data usage, and generally figuring out what’s happening to the personal information at computer speeds. That’s exactly what smart machines do. .
The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the only approved "Blockchain Technology Professional" pilot of the "Smart Learning Workshop 2020- Xueshuo Innovation Workstation" launched by the School Planning, Construction and Development Center of the Ministry of Education of China. workstation. The professional position is based on providing students with diversified growth paths, promoting the reform of the training model integrating professional degree research, production, and research, and building an applied and compound talent training system.