区块链类似94年的网站,区块链类似94年的公司
94年是一个具有里程碑意义的时刻，因为它标志着网络技术的出现，也是互联网崛起的开始。当时，网络技术只能用于个人电脑，而现在，它已经深入到我们的日常生活中。
今天，科技又迈出了一大步，这就是区块链技术。它可以被视为一种分布式数据库系统，可以替代中心化的数据库系统。它不仅可以提高数据的安全性，而且可以更有效地管理数据，实现数据的更新和共享。
类似94年的网站，现在也可以使用区块链技术。区块链可以帮助网站构建一个安全的数据库，从而更好地保护用户的隐私，减少网络攻击的可能性，并且更有效地管理数据。
类似94年的公司也可以利用区块链技术。区块链可以改善企业的管理流程，提高企业的效率。它可以帮助企业更有效地记录数据，改善企业的内部沟通和协作，提高企业的数据安全性，并使企业更加透明。
总而言之，区块链技术可以为94年的网站和公司带来一系列的优势，改善数据安全性和管理流程，提高企业的效率，帮助企业更有效地运营。
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Ⅰ 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.
Jinwowo analyzes the problems that blockchain technology can solve as follows:
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.
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.
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.
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.
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 triggeredIt has attracted increasing attention and research and application in the financial field, especially in the Internet financial field. 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 has good overall strength. It can quickly build its own IT infrastructure and blockchain services on an open cloud platform. 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~
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.
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.
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.
II What is Blockchain 94
Blockchain 94 refers to September 4, 2017, when the central bank and seven ministries and commissions jointly halted ICO events in the blockchain. Define ICO as illegal fundraising. Huobi, Binance, bitai, OK, Bit AI, etc. moved abroad
Ⅲ What exactly is blockchain
What is blockchain?
Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system [1].
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. The 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.
Blockchain was born from Satoshi Nakamoto’s Bitcoin. Since 2009, various Bitcoin-like digital currencies have appeared, all based on public blockchains.
The current situation of digital currency is that a hundred flowers are blooming. Here are some common ones: bitcoin, litecoin, dogecoin, dashcoin. In addition to currency applications, there are also various derivative applications, such as Ethereum, Asch and other underlying application development platforms, as well as NXT , SIA, BitShares, MaidSafe, Ripple and other industry applications.
On January 20, 2016, the People’s Bank of China Digital Currency Seminar announced logarithmicThe research on digital currency has achieved initial results. The meeting affirmed the value of digital currency in reducing the issuance of traditional currency and stated that the central bank is exploring the issuance of digital currency. The expression of the People’s Bank of China’s Digital Currency Seminar has greatly enhanced the confidence of the digital currency industry. This is the first time that the five central bank ministries and commissions have expressed a clear attitude towards digital currencies since they issued a notice on preventing Bitcoin risks on December 5, 2013. [4]
On December 20, 2016, the Digital Currency Alliance - China FinTech Digital Currency Alliance and FinTech Research Institute were officially established, with Huobi being one of the co-initiators. [5]
Some areas where blockchain can be used are:
▪ Smart contracts
▪ Securities trading
▪ E-commerce
▪ Internet of Things
▪ Social communication
▪ File storage
▪ Proof of existence
▪ Identity verification
▪ Equity crowdfunding
We can compare the development of blockchain to the development of the Internet itself , something called finance-internet will be formed on the Internet in the future, and this thing is based on blockchain, and its precursor is bitcoin, that is, traditional finance starts from private chains and industry chains (local area network), and the bitcoin series starts from public chains (Wide Area Network), they all express the same concept - digital assets (Digital Asset), and finally converge to an intermediate balance point.
The evolution of blockchain is:
▪ Blockchain 1.0 - digital currency
▪ Blockchain 2.0 - digital assets and smart contracts
▪ Blockchain 3.0 ——The implementation of distributed applications in various industries
Blockchain is divided into three categories, which is introduced in detail in the book "Blockchain: Defining the New Pattern of Future Finance and Economics" [2] issued by Currency, < br />Hybrid blockchains and private blockchains can be considered as broad private chains:
Public Blockchains (PublicBlockChains)
Public blockchains refer to: any individual or group in the world Transactions can be sent and effectively confirmed by the blockchain, and anyone can participate in its consensus process. The public blockchain is the earliest blockchain and the most widely used blockchain. The virtual digital currencies of all major bitcoins series are based on the public blockchain. There is only one blockchain corresponding to this currency in the world. .
Consortium (Industry) Blockchain (ConsortiumBlockChains)
Industry Blockchain: Multiple pre-selected nodes are designated within a certain group.Bookkeeper, the generation of each block is jointly decided by all pre-selected nodes (pre-selected nodes participate in the consensus process), other access nodes can participate in transactions, but do not participate in the accounting process (essentially still managed accounting, but become distributed Accounting, the number of pre-selected nodes, and how to determine the bookkeeper of each block have become the main risk points of the blockchain). Anyone else can make limited inquiries through the open API of the blockchain.
Private Blockchain (privateBlockChains)
Private Blockchain: Only uses the general ledger technology of the blockchain for accounting. It can be a company or an individual, and has exclusive access to the writing of the blockchain. With access permissions, this chain is not much different from other distributed storage solutions. (Dec2015) Conservative giants (traditional finance) all want to experiment with private blockchains, while public chain applications such as Bitcoin have been industrialized, and private chain application products are still being explored.
IV Advantages of Blockchain Technology Classification of Blockchain Technology
The development of Blockchain technology is becoming more and more prosperous with the continuous expansion of applications. This kind of technology comes from various The strong development momentum of industry demand has brought about rapid changes in blockchain technology, which has attracted more and more attention to the achievements of various industries. From professional technology to resources, they are constantly concentrated in this industry, thus making blockchain technology more and more popular. The development of blockchain technology has entered a new stage, and the impact brought by the development of this blockchain technology has also attracted much attention.
When talking about blockchain technology, Bitcoin has to be mentioned. Many people know that the electronic currency Bitcoin does not rely on the issuance of a specific monetary 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 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 cannot be tampered with Timestamps can effectively solve problems such as data tracking and information anti-counterfeiting.
Will become the next trend in Internet financemouth?
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. Quan and others have 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 shared and 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 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 lack of In all areas of trustful production and life, blockchain technology will be useful.”
The development of blockchain technology has also brought about changes in the operations of various industries.Changes in business concepts, new technologies and new concepts have promoted new developments in various industries. This driving force has a huge impact on society and the promotion of economic activities. Many new industry phenomena will occur one after another, and the public We will also wait and see, looking forward to this brand-new technology being used by various industries to better benefit various industries.
After the IV 94 incident, there were actually Bitcoin ATMs in China!
[Binbook Search Information] A public account that everyone in the currency circle is paying attention to
ATM machines originally referred to small machines set up by banks in different locations. Customers can complete operations through the machine. Bank counter services such as withdrawals, deposits, and transfers.
Back in 2013, buying Bitcoin was not easy. What was popular at that time was offline trading (also known as over-the-counter trading). The two parties would agree on a price and then pay and deliver the goods. To this end, a special event called "Satoshi Nakamoto Square" has been set up. The content of the event is generally a community gathering of enthusiasts, offline face-to-face Bitcoin transactions, speech exchanges, purchasing products and services with Bitcoin, etc.
In order to facilitate offline transactions of Bitcoin, on October 29, 2013, the world's first Bitcoin ATM machine was set up in the Waves Coffee Shop in Vancouver, Canada.
A Bitcoin ATM is a hardware device similar to a bank ATM. Its main function is to enable both buying and selling Bitcoins through the Bitcoin ATM machine. It has a "deposit and withdrawal" function similar to a bank ATM. By using a Bitcoin ATM machine, Bitcoin customers can convert their Bitcoins into cash and cash into Bitcoins. It is also different from the ordinary ones we are traditionally familiar with. Bank ATMs are very different. The "deposits and withdrawals" of Bitcoin ATMs are linked to transactions, and the objects of transactions are cryptocurrency and legal tender. Bitcoin ATMs are connected to the Internet and are able to accept cash, exchange Bitcoins, and sell Bitcoins using the blockchain.
Security
The main function of a Bitcoin ATM is to connect to the Internet to realize offline currency transactions and transactions between legal currency and digital currency. It relies on the encryption algorithm and electronic keys of blockchain technology and has multiple security protection mechanisms to effectively protect the security of users' assets. In addition, the device also supports face recognition, ID card recognition, fingerprint recognition and other functions.
Offline operation
Bitcoin ATM is actually a hardware device with a built-in cryptocurrency trading system. Users can use it to realize various blockchain digital assets with various countries. The exchange of legal currencies can also be reversed, and different types of blockchain digital assets can be purchased with the legal currencies of various countries. And all this is throughDo it offline and complete.
Simple operation method
How to operate the machine: After turning on the machine, a risk prompt will appear on the screen. After clicking Read, four types of 500, 2000, 5000, and 10000 will appear. Amount, the user selects an amount, and the corresponding purchase amount will pop up on the screen based on the current Bitcoin price. After the user agrees, they can use Alipay or WeChat to scan the QR code to pay. After the payment is successful, a ticket with Bitcoin written on it will be displayed under the machine. Wallet address and card corresponding to the password.
Multi-scenario applications
In terms of usage scenarios, Bitcoin ATM machines can be widely used in people’s daily life scenarios, such as restaurants, cafes, bars and other places for consumption, in shopping malls , office buildings, communities and other public areas can also be used to view their own blockchain assets.
Higher fees
The transaction fees of Bitcoin ATM machines are very high. The Financial Customer Protection Bureau (CFPB) stated that the transaction fees charged by Bitcoin ATM machines are very high. According to media reports, transaction fees can be as high as 7%, and Bitcoin exchange fees can be as high as $50. The transaction fees of Bitcoin ATM machines are very high, but this still cannot slow down the expansion of Bitcoin ATM machines around the world.
Rapid global development
According to statistics from the CoinATMRadar website, as of May 13, 2019, there were 4,762 Bitcoin ATM machines worldwide. The United States has the largest number of Bitcoin ATMs, with 1,330. Austria has the densest number of Bitcoin ATM machines, making Austria the easiest country in the world to conduct Bitcoin transactions through Bitcoin ATM machines.
Overall, North America controls the global Bitcoin ATM market, accounting for approximately 76.10% of the global market share, followed by Europe, accounting for approximately 18.8% of the global market share. The number of Bitcoin ATM machines in Asia is very small. The main reason is that Asian governments continue to suppress cryptocurrencies, and many countries have strictly banned transactions in cryptocurrencies such as Bitcoin. Therefore, Asian Bitcoin ATM machines only account for 2.5% of the global market share.
The countries with the smallest market share of Bitcoin ATM machines are Australia, Central and South America, and Africa. Australia accounted for 1.2% of the market share, and Central and South America accounted for 1.3% of the market share. There are currently basically no Bitcoin ATM machines in Africa. Because Nigeria has 1 Bitcoin ATM machine, Africa accounts for 0.05% of the global Bitcoin ATM machine market share.
Proportion of Bitcoin ATMs in each continent:
1. North America: 76.10%
2. Europe: 18.80%
3. Asia: 2.50%
4. Central America and South America: 1.30%
5. Australia: 1.20%
6. Africa: 0.05%
China is developing slowly
As of now, there are 39 Bitcoin ATM machines in Hong Kong, China, and 9 in Taiwan. In 2014, there was a Bitcoin ATM machine in Shanghai. Later, due to regulatory reasons, Bitcoin China stopped maintaining the Bitcoin ATM machine, and the ATM machine ceased to exist in name only.
On September 5, 2018, after a long period of time, the Bitcoin and Ethereum ATM machines landed in Hong Kong and were specifically installed at Naked Hub on Bonham East Street, Sheung Wan, Hong Kong.
In the eyes of many, the process of buying Bitcoin is still very complicated, but Bitcoin ATMs make it easy for novices to buy Bitcoin. Therefore, as cryptocurrency policies become increasingly favorable, the development prospects of Bitcoin ATM machines in China will become clearer.
VI Blockchain may be the best opportunity for young people to make a comeback
Xingchen | 7.14 work notes
Hello everyone, I am Xingchen, here, Sync my work notes.
There is a joke in the industry: "Blockchain may be the best opportunity for young people to make a comeback."
In the early stages of blockchain industry development, there are relatively large investment opportunities, and this industry attracts capital and hot money. No one can refuse such an industry with high return potential.
In the early years, in blockchain or currency speculation, players were all high-net-worth, highly-educated, and highly risk-resistant, and it was a game for a small number of people.
Although everyone knows it now, most people still have a vague understanding. Judging from the current policy, it is not conducive to the development of the industry that everyone participates regardless of you and me. The giants of the new industry The pit will only swallow up the swaying passers-by.
In the industry, I have come into contact with more and more practitioners, and my biggest feeling is that the future belongs to young people.
They are more open, more dynamic and more innovative.
Look, Vitalik Buterin was only in 1994.
A netizen who has consulted me about mining machines before accidentally mentioned yesterday that his child is studying in the blockchain field at UBC in Canada, and he is planning to buy some mining machines for his children. "tuition fee.
I checked and found that starting in 2016, domestic universities have begun to offer blockchain courses, but most of them still focus on general courses.
Although this is the case, it is enough to make people enviable. At least I am very envious. In a stage of life full of unknowns, I have such a simple learning atmosphere and have access to the most cutting-edge technology in the world.
I also heard that some universities even have blockchain societies, and they take the lead in building alliance chains, co-building university nodes, establishing scientific research mining pools, and building blockchain network laboratories. .
Speaking of this, I have to recommend a university blockchain technology community:
This is composed of Tsinghua University, Peking University, Central Finance, National People’s Congress, Hong Kong University of Science and Technology, Nankai University, Shanghai Jiao Tong University, A Chinese university blockchain technology community jointly launched by the heads of the top 20 university blockchain associations such as Fudan University, Zhejiang University, Sichuan University, Wuhan University, and Huake University.
This is a gathering of domestic students who love blockchain technology.
I browsed the content of this community and added the initiator’s WeChat account. I found that it was quite active and felt their intentions.
This community gives priority to students and requires a student ID photo to prove student identity. I recommend this community to my clients and friends.
This is a customer who had Chia P plate done at my place in May this year. He is a sophomore.
Due to academic reasons, we have never met each other, and because the business involves a lot of money, his mother flew from Shenzhen to Hangzhou to meet me. She is an enlightened mother, gentle and elegant in conversation. , pay attention to details, act rigorously, support children to contact and practice new things, and participate in them themselves.
Although the Chia project is not a successful investment at present, I still believe that there will be some costs on the way to learning and growth. The young power he represents will change the industry. More interesting.
Blockchain is not the best opportunity for all young people, but the best opportunity for young people who love blockchain.
In the field of blockchain, in addition to young people pursuing profits, there will also be a large number of young people chasing the technological wave and creating a new world.
This youth not only refers to age, but more to the heart that is always young and always embraces new things.
Good night, young friends.
VII ExamplesWhat is blockchain
Question 1: 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", which is a new form of distributed artificial intelligence and will establish a new interface and shared interface between human brain intelligence and machine intelligence.
Question 2: What is the transaction process of the blockchain? Best to give an example 20 points 1. Definition
Blockchain is like an open network ledger. It originated from Bitcoin and is the underlying technology of Bitcoin. In a Bitcoin transaction, all the information recorded in the transaction is packaged into a "Block" for storage. With the expansion of information exchange, blocks are linked to each other, forming a blockchain.
2. Characteristics
Digital currency represented by Bitcoin is a peer-to-peer electronic cash system. Among them, each transaction will be broadcast to all participants in the network, and will be recorded in the ledger after multiple confirmations. This ledger is the "blockchain". Each participant will have his own ledger. In this way, whenWhen false information occurs, it can be broken through mutual verification to ensure network security.
In the blockchain, every node is equal, and there is no centralized management organization. This "decentralization" feature makes the blockchain unnecessary to rely on third parties, and its operation does not require any human effort. intervention, capable of independent self-validation. In addition, the blockchain network is open to the world, and anyone can query data through the public port, so the entire system is highly transparent.
3. Application
In short, the blockchain is a trusted database and a reliable "ledger". In the future, it will be used in cross-border payments, securities, loans, voting, etc. For example, in cross-border payments, with the security provided by blockchain, money can be sent to the world anytime and anywhere, thus eliminating many intermediate links and high handling fees.
Question 3: 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 registration, agency intermediaries, 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 at the bottom of 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 influence of blockchain on enterprises is also huge. For larger domestic enterprises, Bubi Blockchain is also used in various equity, supply chain, points and other fields. Major domestic financial institutions and enterprises have taken a fancy to the new industry. value, they have developed their own blockchain platforms, and 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 is attracting more and more attention and will form a huge new trend... >>
Question 4: What is blockchain technology? What is blockchain? BlockchainHow to explain the concept? 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) has thus formed a new set of currency rules and systems that are different from and 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 liquidation have also been obvious.obvious advantage. 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 fields, 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 5: The so-called "district" What is "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 6: What is blockchain? Can you explain the principle of 10-point blockchain in plain language: decentralized distributed accounting system
Blockchain core of technologyThe core 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 can directly conduct payment transactions without the participation 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, andCommunication is based on information. In the past, information circulation was not convenient enough to meet the information needs of market participants, so intermediaries and centers were born. This centralized system has problems such as 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 7: Explain clearly what is blockchain in an easy-to-understand manner. The English name for 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 the participation of powerful computing power, Bitcoin provides two rewards: one is to issue a certain number of Bitcoins to these computers every day; instead, all transfer fees are awarded 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.force, launched the digital currency crowdfunding platform Biying China.
Question 8: What is blockchain? Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.
In May 2016, the Currency Blockchain Research Center published the first book in China that introduces blockchain in simple terms, "Blockchain: Defining a New Pattern of Future Finance and Economics." It introduces the impact of blockchain technology on future finance and economy
Question 9: What is blockchain? For the time being, this is a relatively high-end technology. It connects all nodes (which can be understood as servers) through p2p network technology. Complete data (blocks) are stored on each node. The addition and withdrawal of any node will not affect the normal operation of the chain. Data is embodied in the form of data blocks. Blocks are connected to each other and can be understood as a one-way linked list. The hash value of the nth block is generated based on the hash of the n-1th block, the transaction recorded in the current block, and the random number as parameters. In this way, if you want to modify the data of the historical block, you have to modify all the blocks from the modified block to the final block. The difficulty can be imagined.
The blockchain also introduces a consensus mechanism and an incentive mechanism. There is no way to describe it too comprehensively here. I hope everyone can discuss and learn together
Question 10: What is blockchain: This explanation of blockchain is more understandable. Blockchain (Blockchain) refers to the method of decentralization and trustlessness. A technical solution for collectively maintaining a reliable database.
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. Currently, whoever owns the system keeps the accounts. Tencent keeps the accounts of WeChat, and Alibaba keeps the accounts of Taobao. 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.
ⅧWhat does the Bitcoin 94 event mean?
The Bitcoin 94 event refers to the year 2017On September 4, the People's Bank of China, in collaboration with seven ministries and commissions, comprehensively halted ICOs and determined that ICOs were illegal financing operations, and the China Trading Center was also shut down. ICO originates from the initial public offering (IPO) concept of the stock market. It is an operation for blockchain projects to sell tokens for the first time and raise funds for common virtual currencies such as BTC and Ethereum. ICO is an industry term for the blockchain market and a common means of raising liquidity for cryptographic currency/blockchain projects.
The harm of Bitcoin
1. It is very easy to become a criminal prop: BTC accounts are anonymous and investors cannot know their holders;
< p> 2. Interfering with the foreign exchange policy discipline of a country (or region): Bitcoin transactions will not be manipulated by other central banks and do not require credit endorsement by the banking industry. Can successfully bypass the foreign exchange supervision of other countries;3. Influence the legal currency mechanism and cause other similar virtual currencies to continue to emerge;
4. Consume large quantities of Social resources: "Coin mining" is the only way to originally obtain BTC. According to its programming, the difficulty of mining coins becomes greater in the future, which means that more and more time and higher computing power are required.
Ⅸ Explain blockchain in vernacular
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Recently, various ICO financial scams have been blocked in China, but this does not hinder the vigorous development of blockchain technology. After all, technology is innocent and can bring benefits to people. As for how to use it, it depends on people to operate it. If the operation is good, you can recommend development. If the operation is not good, it is like the major ICO projects. Find some knowledge for Internet celebrities to conduct so-called illegal fund-raising and financial fraud.
After talking for a long time, what is blockchain? When it comes to blockchain, the first thing that comes to mind for many people is Bitcoin. We need to solve a problem. Bitcoin is a blockchain, but blockchain is not Bitcoin. Simply put, blockchain is distributed ledger technology (DLT), not a token. It has many characteristics, such as decentralization, traceability, and difficulty in tampering.
(1) Blockchain is a distributed database
First of all, this is a decentralized distributed architecture system. Therefore, having only one central server or node is not called a blockchain. For example, if you go to Taobao to buy a mobile phone, you and the seller are strangers and have no basis for trust. If you give the money to the seller first, the seller may block you by not delivering the goods, and then your mobile phone money will be gone. If the seller ships first, do you pay? It is possible that you will not pay the seller after receiving the goods. Anyway, one party mayWill lose money. At this time, a third-party guarantee is needed to solve the trust problem. Just like Alipay now, you give money to Alipay and the seller will deliver the goods. When you receive the goods, the seller will receive the money.
The above example is a centralized system because all guarantee work is handled by Bora, a third-party payment company. Suppose one day Alipay wants to tamper with data, neither buyers nor sellers can do anything because all authority is in the hands of one company.
At this time, a distributed database is needed. This third party is no longer Alipay, but thousands of monitors. When you buy a mobile phone on Taobao, you will shout to everyone that I am going to XXX to buy a mobile phone, and I paid XXX yuan. The other person will yell like everyone else. I collected XXX’s mobile phone bill and sent it over. In this way, everyone knows about this transaction and everyone is recording this transaction, so it is useless if one or two nodes have problems or malicious behavior, because most nodes have recorded this matter.
(B) Blockchain uses encryption technology to ensure data security
There are two important points here: 1. Crypto-enabled hash function 2. Asymmetric encryption.
If you are interested in specific concepts, you can go online, but people without basic knowledge may not be able to understand it, because these two points are too professional. In fact, if you only know the use of blockchain, you don’t need to have an in-depth understanding of it. It is also a technical concept. All you need to know is that blockchain relies on these technical points to ensure data security and is not easily tampered with. Of course, many people say that these two points can guarantee 100% non-tampering. I want to be a little conservative here. As an author who works in the security industry, I have always been skeptical about 100% security, so it may be more appropriate to call it difficult to be tampered with.
I will briefly introduce these two concepts and try to explain them clearly in plain English.
1. Cryptographic Hash Function
This is mainly used to verify the integrity of information. For example, I sent a message to the company leader saying that I was sick on Friday and needed to take a day off. At this time, a hash value will be generated based on the message I sent, such as: 123456. At this point, when the leader receives this message, a hash value is also generated. Because the content of the message I sent has not changed (it has not been tampered with), the hash value remains unchanged, still: 123456. This is if someone wants to tamper with this news and get sick on Friday and need to take a year off. At this time, the hash value will change, such as: 123489. That's when we learned our information had been tampered with.
2. Asymmetric encryption
It is mainly used for information encryption and authentication. It is actually two keys, one is called the public key and the other is called the private key. Public key encryption, private key decryption.
A public key is a key that everyone has. You own it, I own it. We can all encrypt with this key, but when decrypting it must be decrypted with my private key. If you don't have my private key, you can't decrypt it.
(C) The blockchain uses a consensus algorithm to reach consensus on new data.
The role of the consensus algorithm is to enable all nodes to reach a consensus on the new block.In other words, everyone must approve the new block.
For a centralized deployment system, this is simple, everything is controlled by the center, but in the distributed system of the blockchain, it is very complicated. For example, there are three nodes. A said he bought a mobile phone from XXX store and paid for it, B said he didn’t pay, and C said he didn’t pay enough. Then who do you listen to? What's more, blockchain technology is not as simple as three nodes, but a huge distributed system.
This is when a solution is needed. There is a corresponding problem in computer science called the "Byzantine Universal Problem" or "Byzantine Fault Tolerance" (BFT). This question was raised not because of Bitcoin, but because of a special background.
Early aircraft had three independent control systems. Why do we need three independent control systems? For example, in an emergency, there is a plane opposite. How to judge whether you should hide? If there is only one system, there is no choice, which is equivalent to centralized deployment. If the system breaks, you're dead. What if one of the two systems breaks? The good ones are said to hide, and the bad ones are said not to hide. The computer cannot judge the final result. Therefore, three independent systems are needed to support it, and the probability of two total failures is still very small. But this only takes into account injuries. What should I do if there is a malicious system? Is three enough? The answer is no, we need four systems to maintain consensus.
The use of blockchain is similar, because it is supported by a huge number of nodes, and each node is an independent system without interfering with each other. We can assume that the number of failed nodes and malicious nodes is limited, so it will not cause abnormal consistency of data.
Related questions and answers: What is blockchain? What is the use?
Blockchain is a new computing paradigm and distributed infrastructure that uses fast chain data structures, distributed node consensus algorithms, cryptography and smart contracts based on automated script code to produce, verify, store and transmit data. It can also be said that blockchain is a distributed ledger technology that can provide a decentralized trust mechanism in a non-trust environment, allowing multi-party participants to conduct secure and trust-based transactions without intermediaries.
The core advantage of blockchain technology is decentralization. It can realize decentralized credit-based transactions in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Point-to-point transactions, coordination and collaboration provide solutions to the common problems of high cost, low efficiency and insecure data storage in centralized institutions.
The fields of use of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered. It has had a relatively large impact on the domain name industry.
Related Q&A: Can you explain to me what a blockchain is in an easy-to-understand way?
Er Gazi is my friend since we were young, and we were naked in Hegou together. Later, I came to the city to study and work, and lived a life as a drifter in the north; he farmed at home and did some small business, and now he has a son and a daughter, and his life is safe. He envied my so-called ""I have seen the big world", and I envy his simple life without the pressure of mortgage loans. We have completely different and mutually enviable lives??
That day, Gazi came to me on WeChat and asked, "What is blockchain?" "I was stunned for a moment. How could this idiot care about such avant-garde words? I pretended to be calm and prepared to talk about the technical principles bit by bit, but I could see that idiot's clouds and fog through the phone screen. Confused expression. How to explain clearly "what is blockchain" to people with a little bit of Internet concept and technical foundation? This seems to be a very thorny problem??
The village kiosk interprets the core of blockchain (picture quoted from the Internet )
The core essence of blockchain is "decentralization". Almost all operating modes of blockchain operate around the concept of "decentralization". Once you understand what "decentralization" is, then This can basically explain the question "What is blockchain". For Erga, of course, he must interpret a version that he can understand.
"I said, Gazi, you still open the canteen at the east end of the village? Are you here? "Gazi answered yes. I decided to use this canteen as an example to explain the actual use scenarios of blockchain in modern business and financial models, so that he can better understand what blockchain is.
"Now then Are there many villagers who take credit? By the end of the year, are some of the accounts unclear and there are still many defaulters or those who refuse to acknowledge their accounts? " At this point, Ergazi got emotional and kept complaining that people are not as old as they used to be and business is hard to do!
"In the past, the operation mode of your canteen was a typical centralized one. You gave credit to the villagers and all the accounting was done. They are all directly connected to our villagers through you, and you are the center of all accounts. " Ergazi said he understood and let me continue.
I said: "If you fail one day, then all the debts will become dead debts? It is estimated that it will be difficult to get back the IOUs written in black and white. Forget about remembering those accounts orally, but the decentralization of the blockchain can solve this problem very well. As long as the earth still exists, then the blockchain will remember that every account will exist forever." Erga became more energetic after hearing this.
The essence of the blockchain is "decentralization"
"The The essence is decentralization. Once someone takes credit from you, all the neighbors in the village will help you keep accounts. Because there are many nodes for accounting, it is neither easy to make mistakes nor others can refuse to pay, so everyone reaches a consensus. If someone maliciously fails to repay the debt, the whole village will know his character, and no one will be willing to have financial dealings with him in the future??"
At this point, Gazi was obviously a little excited. It seemed that he was I was really worried about the credit issue. Seeing that Gazi was interested, I also felt a small sense of accomplishment and continued: "Of course, the above is just an analogy. In fact, the blockchain does not really allow villagers to get paper. The pen helps you keep accounts, but it is done through the Internet and computer networking. "
At this time, Gazi was a little confused and asked: "Then what others bought from me, wouldn't everyone in the village know it? Then who would buy things from me? There is really no privacy at all. And you don’t have time to keep accounts here, last year's account is said to be this year's, what should I do if it keeps delaying? "
"Okay, Gazi, your question is on point. "It seems that Gazi is not stupid at all, and he is very shrewd in doing business. I continued to explain: "So, the recording and transmission of this information are all done through encryption. What you see is a picture of numbers and English. String, and each account has a timestamp to record the time of occurrence, which cannot be relied on. "
Gazi had another question: "Is it possible that the people who owe the debt have a good relationship with the villagers, and they join forces to tamper with the accounting? Then you won’t be able to explain clearly at that time??”
“Gazi, that’s all you have, haha. "I understood Gazi's concerns and continued to explain: "The mechanism of the blockchain requires more than 51% of people to agree to tamper with a bill. Everyone has a degree of closeness and distance between them, and it is impossible for everyone to favor the same person. If it were a computer, more than half of the computers on the entire network would need to recalculate. This project would be so huge that it would be almost impossible to complete??"
In this way, through the actual situation of the canteen and combined with some scenes in life, Gazi understood What is in the blockchain: decentralization, distributed accounting, consensus mechanism, encryption mechanism, timestamps, and the characteristics of being difficult to tamper with.
Ergazi was silent for a moment, seeming to be digesting the example I just gave him. I don’t know how much he can understand the example. Not long after, he sent me a voice message on WeChat: “What does blockchain mean? In the past, when I bought goods online and paid, I had to go through Jack Ma’s house. If there is a blockchain, can we directly trade with the seller? Anyway, the accounting is very safe. "
"Okay, Gazi, it's really clear at first glance. Blockchain is essentially a decentralized distributed ledger data cloud. Of course, it can be understood according to your understanding. "I'm very happy that Gazi can roughly appreciate the true charm of the blockchain. Fortunately, my words have not been in vain.
What is Bitcoin? (Picture quoted from the Internet)
"Then Bitcoin What is this thing again? What does it have to do with blockchain? "Gazi asked.
I thought about it briefly and decided to continue to explain to Gazi with the story of the canteen: "Your canteen, the villagers can't keep accounts for you for free all day long, right? Do you have to carry some during the holidays? This is the reward mechanism of the blockchain, and everyone who participates in bookkeeping may receive rewards. "
"Then what are the rewards based on? There has to be a rule, right? "Gazi asked very puzzled.
I explained: "Zhang San went to your store to borrow a pack of cigarettes on credit, but Li Si knew about it first and kept an account for you first, and then others knew about it. Keep accounts, then Li Si can get a small red flower as a reward ~ This small red flower is generated by the blockchain system and has no value in itself, so you do not need to pay any cost for this small red flower??"< p>“Can Bitcoin be spent as money? How is it different from the banknotes we usually spend? "Gazi continued to ask.
"Bitcoin is a digital encrypted virtual currency. In principle, it is the same as our banknotes.The paper currency itself has no value, but the banknotes have the state's credit guarantee, so they have value. Bitcoin is the value formed by consensus among Bitcoin network users, and it has tradable properties, so it can be used to carry value. "What is said here is a bit profound. I don't know if I can understand it.
I continued to explain: "Banknotes can be printed infinitely. If more are printed, inflation will occur. When we were young, popsicles worth 1 cent were very good. , now you can’t eat with 1 yuan. Of course, there are many factors that affect inflation. The number of Bitcoins is fixed, and there is no possibility of unlimited over-issuance. However, different people have different judgments on their value, and coupled with the influence of supply and demand and investor sentiment, their prices are always fluctuating. ”
What is the difference between Bitcoin price fluctuations and stocks?
“So is speculating in Bitcoin just like speculating in stocks? Can you understand it this way? "Gazi seems to know a lot.
"In fact, there are some similarities, but there are also big differences. "I continued Gazi's topic: "The price of stocks always fluctuates around the valuation of companies, and there is government supervision in the stock market. Bitcoin itself has no value. It is priced entirely based on supply and demand and player valuations. It grows wildly without any government supervision. Therefore, it may have higher risks and higher returns than stocks. "
In the end, Gazi revealed the real purpose of today. He asked me: "Can I invest in blockchain projects? ”
Gazi is a typical example of those who don’t go to the Three Treasures Hall for anything. Although there is a large circle of people who are involved in both blockchain and Bitcoin, in fact, what he really cares about is “blockchain project investment” Is it reliable? "When these words came out, I was extremely shocked. Now the so-called blockchain investment projects have actually reached fourth- and sixth-tier cities and small towns!
As of now, there are only three types of blockchain investments. Situation: Mining, currency speculation, so-called blockchain projects.
Mining and currency speculation are still the main lines of the blockchain (pictures quoted from the Internet)
The so-called mining means mining by purchasing mining machines, etc. Equipment, mine virtual currency, and then sell it for cash to get returns. You can install the mining machine yourself, or you can find a mining pool to host it, but the core keys to profitability are "computing power" and "power consumption" as well as Investment in equipment. With the sharp drop in the price of virtual currencies and the increase in mining difficulty, the current mining returns of many currencies are very unsatisfactory. Mining is obviously only a very small number of investors who understand technology can play successfully. I My childhood friend Gazi obviously can’t play with it.
As for “coin speculation”, I have just introduced some differences between Bitcoin and stocks in the previous section. In principle, although they are both “buy low and sell high” operations , but there is a huge difference. Ordinary investors cannot determine the value of a virtual currency itself, and the price is determined entirely by the relationship between supply and demand, which is somewhat similar to what we often call "market makers." On the other hand, the virtual currency trading market is extremely Irregularities, theft and hacker attacks often occur, and the risk factor is much greater than investing in stocks. For the safety of my friends’ funds, I am aTen thousand people who don’t agree with Ga Zi coming to “speculate”!
The "September Fourth Movement" stipulated that the issuance of virtual currency is illegal
In fact, in my opinion, most of the so-called investment projects in the market are essentially "illegal fund-raising" and "pyramid schemes." Some so-called blockchain investment projects attract investors into the circle through various packaging and inflammatory rhetoric, and then create the illusion of profitability by building a software and hardware ecosystem of issuing new coins + mining + currency speculation, and then finally run away. Our country's laws clearly stipulate that the issuance of virtual currencies is illegal.
Illegal pyramid schemes now wear the cloak of blockchain (picture quoted from the Internet)
And how to identify some pyramid schemes under the guise of blockchain? In fact, these pyramid schemes are also so-called Ponzi schemes, what we people often call "empty gloves." These so-called "direct sales" or "marketing" activities often have no actual products to circulate, and rely more on developing "downline" to ensure top-level profits. With the rise of the concept of blockchain, this MLM model has shown an intensification trend, and it even deceives people under the banner of state support for new technologies.
When Gazi asked, “Can blockchain projects be invested in?”, I realized the seriousness of the problem. Gazi is a typical young man from a small town, and his pursuit is his wife and children. But when faced with the attraction of "wealth", people often do inappropriate things. Mining and currency speculation are simply not suitable for him, let alone blockchain investment projects that are most likely "illegal financing" or "illegal pyramid schemes"!
I quickly dialed Gazi’s phone number and conducted the above analysis carefully??
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