区块链方案介绍文案,区块链方案设计
请查看相关英文文档
① Six core algorithms of blockchain technology
Six core algorithms of blockchain technology
Blockchain core algorithm 1: Byzantine Agreement
The story of Byzantium goes something like this: The Byzantine Empire has huge wealth, and its 10 neighboring countries have been around for a long time. However, Byzantium’s high walls are towering and impregnable, and no single neighbor can successfully invade. Any invasion by a single neighbor will fail, and it is also possible that it will be invaded by 9 other neighbors. The Byzantine Empire's defensive capabilities were so strong that at least half of its ten neighbors had to attack at the same time to be able to break through. However, if one or several of the neighbors agree to attack together, but betrayal occurs during the actual process, then the invaders may all be annihilated. So each party acted cautiously and did not dare to trust its neighbors easily. This is the Byzantine Generals Problem.
In this distributed network: each general has a message ledger that is synchronized with other generals in real time. The signature of each general in the ledger can be used to verify the identity. If any of the messages are inconsistent, you can know which generals the messages are inconsistent with. Even if there is inconsistent information, as long as more than half agree to attack, the minority obeys the majority, and a consensus is reached.
Thus, in a distributed system, although there are bad guys, bad guys can do anything (not restricted by the protocol), such as not responding, sending error messages, sending different decisions to different nodes, and combining different wrong nodes. Get up and do bad things, etc. However, as long as most people are good people, it is entirely possible to achieve consensus in a decentralized manner
Blockchain Core Algorithm 2: Asymmetric Encryption Technology
In the above Byzantine Agreement, if one of the 10 generals Several messages initiated at the same time will inevitably cause chaos in the system, causing each to have its own attack time plan, making it difficult to act in a consistent manner. Anyone can initiate offensive information, but who will send it? In fact, this only requires adding a cost, that is: only one node can spread the information within a period of time. When a node sends a unified attack message, each node must sign and stamp the message from the initiator to confirm their identity.
It seems today that asymmetric encryption technology can completely solve this signature problem. The asymmetric encryption algorithm uses two different keys for encryption and decryption. These two keys are the "public key" and "private key" that we often hear. Public keys and private keys generally appear in pairs. If a message is encrypted with a public key, the private key corresponding to the public key is required to decrypt it; similarly, if a message is encrypted with a private key, the public key corresponding to the private key is required to decrypt it.
Blockchain Core Algorithm Three: Fault Tolerance Issue
We assume that in this network, messages may be lost, damaged, delayed, sent repeatedly, and the order received is inconsistent with the order sent. In addition, the behavior of nodes can be arbitrary: they can join and exit the network at any time, they can discard messages, forge messages, stop working, etc. Various human or non-human failures may also occur. IOur algorithm provides excellent fault tolerance for a consensus system composed of consensus nodes. This fault tolerance includes both security and availability, and is applicable to any network environment.
Blockchain core algorithm 4: Paxos algorithm (consensus algorithm)
The problem solved by the Paxos algorithm is how a distributed system can reach agreement on a certain value (resolution). A typical scenario is that in a distributed database system, if the initial state of each node is consistent and each node performs the same sequence of operations, then they can finally obtain a consistent state. In order to ensure that each node executes the same command sequence, a "consistency algorithm" needs to be executed on each instruction to ensure that the instructions seen by each node are consistent. A general consensus algorithm can be applied in many scenarios and is an important issue in distributed computing. There are two models for node communication: shared memory and message passing. The Paxos algorithm is a consensus algorithm based on the message passing model.
Blockchain Core Algorithm Five: Consensus Mechanism
The blockchain consensus algorithm is mainly proof of work and proof of equity. Taking Bitcoin as an example, in fact, from a technical point of view, PoW can be regarded as reused Hashcash. Generating proof of work is a random process in terms of probability. To mine a new confidential currency, when generating a block, all participants must agree, and the miner must obtain PoW proof of work for all data in the block. At the same time, miners must constantly observe and adjust the difficulty of this work, because the network requirement is to generate a block every 10 minutes on average.
Blockchain Core Algorithm 6: Distributed Storage
Distributed storage is a data storage technology that uses the disk space on each machine through the network and combines these dispersed storage resources into a virtual Storage devices, data are dispersedly stored in every corner of the network. Therefore, distributed storage technology does not store complete data on each computer, but splits the data and stores it in different computers. It's like storing 100 eggs, not in the same basket, but in different places. The total sum is 100.
② What are the application examples of blockchain technology
The express logistics industry is an industry that is very suitable for the application of blockchain technology.
In fact, the logistics ecosystem is relatively complex and there are many groups involved in the process.
The industry itself is a complex of segments with the concept of "flow". Starting from the initial "business flow", it gradually gave birth to "logistics", as well as the corresponding support of "capital flow" and "information flow" , complete the service chain.
There is a key issue behind the emergence of various "flows", which is the transfer of commodity ownership.
Coincidentally, many of the types of problems that blockchain technology solves are related to the trust friction generated during the transfer of asset ownership.
The application of blockchain technology can significantly improve the processing speed and efficiency of settlement business in the express logistics industry.Efficiency, effectively solves the problem of traceability and anti-counterfeiting of items, and fully guarantees information security and the privacy of senders and recipients.
In the field of promoting application in the express logistics industry, there are domestic blockchain companies doing applications in this area, such as Walton Chain.
Last year, Waltonchain reached a strategic cooperation with Huodou (Xiamen) Technology Co., Ltd., using Waltonchain’s “RFID blockchain” technology solution to help it improve its logistics solutions and move goods to Dou puts data on the chain in all aspects of its logistics turnover, such as entering and exiting the warehouse, receiving goods and other key nodes. After deploying the reading and writing system, when the object passes through any link, the relevant data can be read by the RFID reader and writer, and the relevant data can be read by the RFID reader. The corresponding behavior is converted into data and uploaded to the blockchain. Users can trace the entire logistics process with one click.
Four business scenarios that can be implemented in the real environment are suitable for the application of blockchain technology.
Scenario 1: Insured express delivery
Revolving around the insured scenario, express companies transport goods, insurance companies provide guaranteed goods, merchants provide goods sales, sellers purchase insured services, and the government regulates the industry.
So, what should be recorded on the blockchain? There are several key points. The logistics details of the goods, accounts, identities, claims, other reference data and other information are recorded on the blockchain.
Insured price is the concept of a contract. When the customer signs for the package normally, the account claim is automatically triggered, the contract ends normally, and the automatic settlement of the premium ends. If there is a problem or missing piece, the insurance company's claim process will be triggered.
Scenario 2: Charity express delivery
For charity activities, such as the "One Cent" campaign, one cent from the cost of each charity package is donated to the account of the charity organization . In this scenario, the express delivery company is still responsible for the transportation of goods, the public welfare organization provides the execution of public welfare activities, and the poverty alleviation merchants provide the sales of public welfare and poverty alleviation products.
Then what is recorded in the blockchain is the logistics details of the goods. After the package is signed for, it will be recorded on the blockchain, automatically triggering the transfer from the logistics company's public welfare account to the public welfare organization's account. When the public welfare activities are completed, the entire process is open and transparent, which avoids the public's distrust of social welfare activities.
Scenario 3: Industry blacklist sharing
At present, the blacklist of express delivery employees is still mainly offline. We hope that through blockchain technology, each company can record the blacklist of employees on the blockchain, and other companies can also query it, and the data cannot be modified, and can be traced back to which company this person worked in What kind of inappropriate behavior and other information.
Scenario 4: Supervision of safety incidents in postal delivery channels
Many express companies will install security inspection machines, and the government also wants to know whether each logistics company has any transportation safety hazards. Through the distributed accounting model, each express delivery company can record the effective information of the security incident on the blockchain when a security incident occurs, so that regulatory agencies can monitor it in real time and cannot be tampered with.
③ What are the blockchain solution development companies?
Based on the decentralized characteristics of blockchain technology, it can be said that there are many applications of blockchain technology, but currently There are still relatively few substantive practical applications, and they are mainly used in fields such as finance, medical care, forensic evidence, smart contracts, shared economics, and digital assets. Like Yingtang Zhongchuang, its blockchain solutions are mainly focused on data encryption, the development of transaction systems that ensure transaction transactions and data security, while other companies are more focused on developing solutions for internal needs.
④ Blockchain digital currency exchange platform construction solution
Digital cash exchanges are the focus of competition in the financial field. Having a good digital currency exchange will help you compete among peers. There are great advantages. The market of digital cash exchanges is a global market, and it is involved in global transaction business hosting platforms. Digital cash exchanges have different customization needs and different functions due to different data. Good digital cash The exchange platform has rich functions, secure and powerful performance, and is differentiated among similar products. Blockchain digital asset exchange technology development
The unique interface of digital cash exchanges can provide customers with convenient means of fund transfer , such as fast recharge, currency withdrawal, currency recharge, etc. It can also support multiple transaction methods, currency transactions, legal currency transactions, over-the-counter transactions, etc.
1. Off-site exchanges: off-site transactions Also known as the OTC trading market, this is a place with no fixed place, no fixed rules and regulations, and no prescribed trading products. Users can achieve two-way transactions on off-site exchanges. The transactions are very free. It is the same as other blockchain applications. Off-site exchanges do not Unified trading system and mechanism
2. Currency transaction: Currency transaction, as the name suggests, is a transaction between digital currency and digital currency. Currency is used as the evaluation unit to purchase other currencies, with price priority and time. Intermediary in order of priority.
3. French currency trading: French currency trading can be said to be the most direct way. What is the target price of the digital cash platform? The direct purchase transaction by users with fiat currency is a French currency exchange. The disadvantage of French currency exchange is that the currencies that can be purchased are limited. For encrypted currency types, it is necessary to purchase other types of currencies and exchange them through currency transactions.
Since the digital asset exchange is targeting the global market, its language richness is very important. The digital asset exchange not only supports the development of multiple currencies, but also supports the customized development of multiple functional modules, and also supports the development of languages in various countries.
The functions of the blockchain digital asset exchange will not stop here. With the upgrade of technology in the future, new and better functions will also appear. Similarly, functional requirements also promote technology upgrades.
⑤ How to develop blockchain
Share Zone View Network:
The application scope of blockchain technology is still very wide. Based on decentralization and trustlessness, Collective maintenance, reliable database and other characteristics, its application in the financial industry isZuchang was the first to take the lead.
Blockchain is the underlying technology of Bitcoin, and the application and development of blockchain in digital currencies is already mature.
Like the blockchain-based trading system development solution provided by Yingtang Zhongchuang, the developed software system has a high degree of security and transparency.
⑥ What are the blockchain P2P system development solutions?
Blockchain technology can effectively solve the current dilemma in the bill market and the P2P field (data in-depth mining and application, data security), Provide reliable technical support for effective supervision and low-cost supervision, and build a new trading platform for bill market innovation. In terms of system development solutions, there are currently not many companies that can apply blockchain technology to build them. The only specific solution that can be found currently is developed by Yingtang Zhongchuang. Its P2P system solution developed with blockchain technology can solve a large number of problems. Some problems encountered in data credit investigation.
⑦ Easy to understand What is blockchain
Bitcoin began in 2008 with the paper of the mysterious Satoshi Nakamoto. In the 13 years since its birth, Bitcoin has experienced countless market tests and technical attacks, but it has always stood firm.
Now Bitcoin has grown into a currency system with millions of users around the world, tens of thousands of merchants accepting payments, and a market value of up to tens of billions of dollars.
In layman's terms, a Bitcoin user runs the Bitcoin client software, and such a computer is called a node. A large number of node computers are connected to each other to form a P2P (peer-to-peer) network.
The specific principle can be understood like this:
For example, A has 10 Bitcoins and wants to transfer 1 to B, and B’s original account The balance is 2 Bitcoins.
• A first broadcasts the transfer transaction request to surrounding nodes: "Attention everyone, I am A, and I want to transfer 1 Bitcoin to B. This broadcast is true and signed with my private key. "
• Nodes around A receive A's broadcast, first check the authenticity of the transaction signature of A's account, and then check whether A's account has sufficient balance.
• After checking and confirming that there is no problem, the node starts to make a note on its own account book: Account A transfers 1 Bitcoin to Account B, and modifies the account balances of A and B: Account A balance = 10 Bitcoin - 1 Bitcoin = 9 Bitcoins, account B balance = 2 Bitcoins + 1 Bitcoin = 3 Bitcoins.
• After the node has recorded the transaction, it broadcasts the transaction to the surrounding node brothers, spreading it from ten to ten until all nodes receive the transaction. The transaction between A and B was recognized by the entire network.
⑧ What does my country’s blockchain team building solutions include?
my country’s blockchain team building solutions include:
1. Team building must break the traditionalbreak the constraints of traditional disciplines and colleges and give full play to the advantages of interdisciplinary research.
2. Establish a chief expert responsibility system.
3. Strictly manage the size of the team and encourage in-depth communication among members.
4. Strengthen the joint construction of blockchain scientific research teams to achieve complementary advantages and strong alliances between teams.
Origin
Blockchain originated from Bitcoin. On November 1, 2008, a person claiming to be Satoshi Nakamoto published The article "Bitcoin: A Peer-to-Peer Electronic Cash System" [4] elaborates on the architectural concept of an electronic cash system based on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc., which marks the The birth of.
Two months later, the theory came into practice, and on January 3, 2009, the first genesis block with serial number 0 was born. A few days later, block number 1 appeared on January 9, 2009, and was connected to the genesis block number 0 to form a chain, marking the birth of the blockchain.
In recent years, the world's attitude towards Bitcoin has been ups and downs, but blockchain technology, one of the underlying technologies of Bitcoin, has received increasing attention. In the formation process of Bitcoin, blocks are storage units one by one, recording all communication information of each block node within a certain period of time.
The links between each block are realized through random hashing (also called hash algorithm). The latter block contains the hash value of the previous block. With the expansion of information exchange, a block Continuing with one block, the result is called a blockchain.
⑨ 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 reducing the burden of the real economy and reducing transaction costs, which is now emphasized, 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.
Chongqing Jinwowo Analysis: The most important thing about blockchain is to solveSolve 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 triggered increasing attention and attention in the financial field, especially in the Internet financial field. Research applications. There are many blockchain system development companies. Blockchain technology development companies like Renren Chain are relatively reliable. You can refer to blockchain solutions.
Point 1: First of all, you must understand the technical strength of the blockchain technology service provider you choose, including the underlying strength of the blockchain and the technical strength of the team; what successful cases have been developed. Ask for developed projects, and the other party will analyze previous successful cases.
Point 2: It depends on the other party’s existing underlying blockchain architecture and project development experience.
Point 3: You can ask your friends if they know anything about it and recommend it. I personally know that the Renren blockchain BaaS platform 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 blockchain, eachWorks entered into the blockchain copyright registration system will generate unique digital fingerprints 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" backend 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-tamperability 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.
