区块链的非安全环境包括,区块链的非安全环境有哪些
区块链的非安全环境包括智能合约漏洞、51%攻击和资金池风险等。今天，我们将深入讨论这三个关键词，以帮助您了解区块链的非安全环境。
智能合约漏洞是指在区块链网络中，由于智能合约编程错误或设计缺陷，导致攻击者可以访问系统的敏感信息或资金，或者可以控制系统的行为。智能合约漏洞的存在使得区块链网络不安全，因此，智能合约的开发者需要仔细检查他们的代码，以确保没有漏洞可以被攻击者利用。
51%攻击是指攻击者控制了网络的51%以上的节点，从而控制了网络的整体行为。51%攻击可以用来拒绝服务（DoS），篡改交易，双花，延迟确认，拒绝确认等。因此，51%攻击是区块链网络中的一种非常严重的安全风险，可能导致网络的瘫痪。
资金池风险是指投资者在投资区块链项目时，可能会面临的风险。由于区块链技术的初级性，以及投资者自身的不足，许多投资者投资了一些不实际的项目，从而导致资金损失。因此，投资者在投资区块链项目时，应当仔细审查，以避免投资风险。
以上就是关于区块链的非安全环境的三个关键词：智能合约漏洞、51%攻击和资金池风险。虽然区块链的安全性和可靠性仍然有待改进，但是，以上这三个关键词可以帮助您了解区块链的非安全环境，从而更好地保护您的资产安全。
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1. What is a blockchain link and is it legal?
Legal analysis: Blockchain technology originated from Bitcoin and is the underlying supporting technology of Bitcoin. Blockchain is a technology that allows transactions to break through the traditional trust transaction model and centralized architecture to achieve transaction security in non-security environments.
Legal basis: "Notice on Further Preventing and Dealing with Speculation Risks in Virtual Currency Transactions" 1. Clarify the essential attributes of virtual currency and related business activities
(2) Virtual currency-related business activities Belongs to illegal financial activities. Carry out legal currency and virtual currency exchange business, exchange business between virtual currencies, act as a central counterparty to buy and sell virtual currencies, provide information intermediary and pricing services for virtual currency transactions, token issuance financing, virtual currency derivatives transactions and other virtual currency related Business activities suspected of illegal sales of tokens, unauthorized public issuance of securities, illegal futures business, illegal fund-raising and other illegal financial activities are strictly prohibited and will be resolutely banned in accordance with the law. Those who carry out relevant illegal financial activities that constitute a crime will be investigated for criminal liability in accordance with the law.
2. What production relations are defined by the use of digital technologies such as blockchain?
What production relations are defined by the use of digital technologies such as blockchain: Blockchain is a Distributed databases (systems) in non-secure environments. Blockchain uses cryptography to ensure that existing data cannot be tampered with.
Let it operate on the chain and become a blockchain economic organization. In essence, chain reform is to reasonably allocate the value created by each value creator to him. It is more about the improvement of production relations behind it, that is, the application of token economy to transform traditional industries.
The content and characteristics of chain reform:
Specifically speaking, the tasks that companies need to complete in chain reform include: digital asset trading system Establishment; establishment of digital asset storage system (such as wallet); design of business model and economic model; construction of community construction and operation plan. In terms of characteristics, enterprises should note that, first of all, chain reform is an organic whole, and the above components should play a role at the same time.
It is not just about overcoming technical difficulties; secondly, the threshold for users should be lowered as much as possible to avoid exposing users to professional terms and technical details related to the blockchain, so as to achieve "insensitive chain changes"; Finally, in line with the company's own situation and development trends, chain reform should be carried out as early as possible. For ordinary companies that do not have advantages in technology and resources, flexibility is the best weapon to fight against giants.
3. What does blockchain link mean?
Briefly, blockchain can be defined as follows:
1. Blockchain is a system that is placed in a non-secure environment. Distributed database (system).
2. Blockchain uses cryptography to ensure that existing data cannot be tampered with.
3. The blockchain uses a consensus algorithm to reach consensus on new data.
A system with the above three properties is a districtBlockchain.
1. Blockchain is a distributed database (system) placed in a non-secure environment.
There are two key points here: (1) distributed, (2) non-secure environment. First of all, this is a distributed, decentralized system. Therefore, there is a central server or node, not a blockchain. The nodes are all safe and non-malicious, so this is not a blockchain. Similarly, from an application perspective, if your application must use a central node (such as using a supercomputer for deep learning) or there is no need to consider the insecurity of the node (such as a sensor in a safe factory), then There is no need to consider blockchain technology.
2. Blockchain uses cryptography to ensure that existing data cannot be tampered with.
The two core points of this part are: (1) cryptographic hash function, (2) asymmetric encryption. Cryptographic hash function is mainly used to verify the integrity of information - put the hash value of this information after a piece of information, this value is very small. For example, 256bit, and it is easy to calculate. After receiving the message, the recipient calculates the hash value again and compares the two to know whether the message has been tampered with. If it is tampered with, even if only one bit is tampered with, the entire hash value will be completely different. According to the nature of the hash function, no one can forge another message with the same hash value, which means that the tampered data is completely impossible to pass hash verification.
Asymmetric encryption: This is easy to understand - symmetric encryption has a key, which can be understood as a safe key. You encrypt the message into ciphertext. No one can understand what it is, and then the same key Decrypt it into the original message. Asymmetric encryption means that there are two keys, one is called the public key and the other is called the private key. If you use one of them to encrypt, you can only use the other to decrypt, and vice versa. Another important property is that, given you ciphertext, plaintext and one of the keys, you still can't figure out what the other key is.
3. The blockchain uses a consensus algorithm to reach consensus on new data. The purpose of the consensus algorithm is to allow all nodes to reach a consensus on the new blocks, that is, everyone must recognize the new blocks.
4. Is blockchain investment safe?
The act of blockchain investment itself is legal, but it is illegal to commit fraud, illegal fund-raising and other illegal activities through blockchain investment. There are no specific legal provisions on blockchain investment. According to the principle of legal punishment, it is not illegal in itself, but it does not rule out that it is used as a currency outside supervision by a small number of fraudsters and illegal fund-raisers as a tool for illegal crimes and money laundering.
[Legal Basis]
Article 3 of the "Criminal Law of the People's Republic of China" If the law expressly stipulates that the act is a crime, it shall be convicted and sentenced in accordance with the law; if the law does not expressly stipulate that the act is a crime, it shall not be convicted and punished. Article 13 All activities that endanger national sovereignty, territorial integrity and security, split the country, subvert the power of the people's democratic dictatorship and overthrow the socialist system, undermine social and economic order, infringe upon state-owned property or the gathering of working peopleInfringement of privately owned property of citizens, infringement of citizens' personal rights, democratic rights and other rights, as well as other behaviors that endanger society and should be punished according to the law are all crimes, but the circumstances are obvious and minor and the harm is not great Yes, it is not considered a crime.
5. Is blockchain safe?
Blockchain has been developing for many years and is still an emerging trend in the market. In the world of virtual currencies, benefits are often accompanied by risks, and they are often reported in the news. It can be seen that negative news such as currency value plummeting and currency theft have made people worried about asset security. It is reported that there is an emerging financial platform called Fintoch recently. The HyBriid encryption technology developed by it combines "multi-signature" and "zero "Proof of knowledge" can make the probability of illegal transfer of assets infinitely close to zero, and users' financial management is relatively guaranteed. For more details, please refer to the Internet
6. How to define blockchain and what are its application scenarios
Many people now think that blockchain is a universal technology. Omnipotent, blockchain technology is somewhat of a myth!
Regarding the definition of blockchain technology, American scholar Melanie Swann defined blockchain technology as an open, transparent and decentralized technology in her book "Blockchain: A New Economic Blueprint and Introduction" database.
Definition of Blockchain: Narrow VS Broad
As for the application scenarios of blockchain technology, it is natural to combine the differences between blockchain and other technologies. In terms of system characteristics.
Blockchain technology features include:
Blockchain is a global A database storage system that can be operated collaboratively in various places is different from traditional database operations where read and write permissions are in the hands of a company or a centralized authority (a characteristic of centralization). Blockchain believes that anyone with the ability to set up a server can participate. Nuggets from all over the world have deployed their own servers locally and connected to the blockchain network to become a node in this distributed database storage system; once joined, the node enjoys exactly the same rights as all other nodes and obligations (decentralized, distributed characteristics).
At the same time, people who provide services on the blockchain can perform read and write operations on any node in the system. In the end, all nodes around the world will complete the process again and again according to a certain mechanism. Synchronize in sequence to achieve complete consistency of data in all nodes in the blockchain network.
At the beginning of this year, the term blockchain began to enter everyone’s lives. From national leaders to aunts who dance square dances, everyone knows this term. This term is widely known by Bit Brought by coins.
As we all know, the first few dozen Bitcoins can only be exchanged for one pizza, and at its peak, 2000More than 0 US dollars each, it has skyrocketed by more than a thousand times, which has also benefited a large number of local tycoons. Currently, virtual currencies generated by blockchain technology are increasingly entering everyone's lives. Many people have joined the ranks of currency speculation. I often hear people say , if you buy the right one hundred times the coin, the bicycle will turn into a sports car, and one coin will turn you into a young model. You can imagine how attractive it is.
Since 2008, various games applying blockchain technology have also become popular, such as development games (Network Letts Dog, 360 Block Cat), mining games (NetEase Planet, Virtual Earth, Gongxinbao), these are attracting everyone to join in the name of blockchain, and of course there are some that are really reliable, which requires everyone to identify them carefully.
Blockchain is a distributed ledger (database) that connects data blocks in an orderly manner and cryptographically ensures that it cannot be tampered with or forged. technology. In layman's terms, blockchain technology can achieve openness, transparency, non-tampering, non-forgery, and traceability of all data information in the system without the need for third-party endorsement. As an underlying protocol or technical solution, blockchain can effectively solve the problem of trust and realize the free transfer of value. It has broad prospects in the fields of digital currency, financial asset transaction settlement, digital government affairs, and certificate deposit and anti-counterfeiting data services.
Digital currency
After experiencing physical objects, precious metals, banknotes and other forms, digital currency has become the development direction of the digital economy era. Compared with physical currency, digital currency has the characteristics of easy portability and storage, low circulation cost, convenient use, easy anti-counterfeiting and management, breaking geographical restrictions, and better integration.
Bitcoin technically implements an electronic cash system in which both parties to the transaction can directly transfer funds to each other without the need for third-party transfer or arbitration. In June 2019, the Internet giant Facebook also released a white paper on its cryptocurrency Libra. Whether it is Bitcoin or Libra, the underlying technology they rely on is blockchain technology.
my country began the development of central bank digital currency as early as 2014. my country's digital currency DC/EP adopts a two-tier operating system: the central bank does not directly issue digital currency to the public. Instead, the central bank redeems the digital currency to various commercial banks or other legal operating institutions, and then these institutions exchange it for public supply. its use. In early August 2019, the central bank held a video conference on work for the second half of the year. The meeting called for accelerating the pace of research and development of the national legal digital currency.
Financial asset transaction settlement
Blockchain technology naturally has financial attributes, and it is causing disruptive changes in the financial industry. In terms of payment and settlement, under the blockchain distributed ledger system, multiple market participants jointly maintain and synchronize a "general ledger" in real time. Payment, clearing, and settlement that currently take two or three days can be completed in just a few minutes. tasks, reducing the complexity and cost of cross-bank and cross-border transactions. At the same time, blockchainThe underlying encryption technology ensures that participants cannot tamper with the ledger, ensuring that transaction records are transparent and secure. Regulators can easily track on-chain transactions and quickly locate high-risk capital flows. In terms of securities issuance transactions, traditional stock issuance processes are long, costly and complex. Blockchain technology can weaken the role of underwriting institutions and help all parties establish a fast and accurate information exchange and sharing channel. Issuers handle issuance on their own through smart contracts, and regulatory authorities With unified review and verification, investors can also bypass intermediaries and conduct direct operations. In terms of digital bills and supply chain finance, blockchain technology can effectively solve the financing difficulties of small and medium-sized enterprises. It is difficult for current supply chain finance to benefit small and medium-sized enterprises in the upper reaches of the industrial chain, because they often do not have direct trade relations with core enterprises, and it is difficult for financial institutions to evaluate their credit qualifications. Based on blockchain technology, we can establish a consortium chain network covering core enterprises, upstream and downstream suppliers, financial institutions, etc. The core enterprises issue accounts receivable vouchers to their suppliers. After the bills are digitized and uploaded to the chain, they can be uploaded to the supplier Transfer between them, each level of supplier can realize the corresponding amount of financing with the digital bill certificate.
Digital Government Affairs
Blockchain can make data run and greatly streamline the service process. The distributed technology of blockchain can allow government departments to concentrate on one chain, and all service processes are delivered to smart contracts. As long as the service personnel pass the identity authentication and electronic signature in one department, the smart contracts can be automatically processed and transferred, and the subsequent steps can be completed in sequence. All approvals and signatures. Blockchain invoice is the earliest application of domestic blockchain technology. The tax department launched the "Tax Chain" platform for blockchain electronic invoices. The tax department, the issuer, and the payee join the "Tax Chain" network through unique digital identities, truly realizing "instant invoicing for transactions" and "instant reimbursement after invoicing" - in seconds Level invoicing and minute-level reimbursement accounting significantly reduce tax collection and management costs, and effectively solve problems such as data tampering, over-reporting of one ticket, and tax evasion. Poverty alleviation is another practical application of blockchain technology. Utilize the characteristics of openness, transparency, traceability, and non-tampering of blockchain technology to achieve transparent use, precise investment, and efficient management of poverty alleviation funds.
Evidence-based anti-counterfeiting
Blockchain can prove the existence of a file or digital content at a specific time through hash timestamps, and it is open, non-tamperable, and traceable. It provides perfect solutions for judicial forensics, identity certification, property rights protection, anti-counterfeiting and traceability, etc. In the field of intellectual property, the digital signature of blockchain technology and on-chain certificates can confirm the rights of text, pictures, audio and video, etc., and create and execute transactions through smart contracts, allowing creators to regain pricing power and preserve data formation in real time. The evidence chain covers the three major scenarios of rights confirmation, transaction and rights protection. In the field of anti-counterfeiting and traceability, blockchain technology can be widely used in various fields such as food and medicine, agricultural products, alcohol, and luxury goods through supply chain tracking.
Data services
Blockchain technology will greatly optimize existing big data applications.It plays a huge role in communication and sharing. In the future, the Internet, artificial intelligence, and the Internet of Things will generate massive amounts of data. The existing centralized data storage (computing model) will face huge challenges. Edge storage (computing) based on blockchain technology is expected to become a future solution. Furthermore, the non-tampering and traceability mechanism of blockchain ensures the authenticity and high quality of data, which becomes the basis for all data applications such as big data, deep learning, and artificial intelligence. Finally, blockchain can realize multi-party collaborative data calculations while protecting data privacy, and is expected to solve the problems of "data monopoly" and "data islands" and realize the value of data circulation. In response to the current blockchain development stage, in order to meet the blockchain development and application needs of general business users, many traditional cloud service providers have begun to deploy their own BaaS ("Blockchain as a Service") solutions. The combination of blockchain and cloud computing will effectively reduce enterprise blockchain deployment costs and promote the implementation of blockchain application scenarios. In the future, blockchain technology will also play an important role in many fields such as charity, insurance, energy, logistics, and the Internet of Things.
The three words "blockchain" were completely ignited during the Spring Festival that just passed, and the limelight overshadowed everything else. Some people said that this was the arrival of a new era, and the past It has become a classic, and some people say that it is all hype and is ultimately a bubble.
In fact, blockchain technology is not a new concept. It has been applied to many industries, such as electronic signatures, as early as the past two years. Recently, the third-party electronic signature platform eShanbao revealed the latest progress of blockchain applications to NewSeed.
Currently, blockchain technology is mainly used in e-signing products for certificate deposit and certificate issuance. The application scenarios include copyright protection and online signing. , web page forensics, phone recording, email storage of evidence, etc.
Take the rights protection of online works as an example. Since online rights protection generally adopts the method of collecting evidence after the fact, real-time confirmation of rights is not carried out in the process of evidence generation, so the entire confirmation process is difficult. The copyright process is time-consuming, difficult and costly to obtain evidence, and extremely difficult to prove and trace the source. It cannot meet the characteristics of rapid dissemination and large quantity of online works.
eShanbao's new intellectual property protection solution based on timestamp + blockchain starts from the user's real-name authentication and solidifies the information generated during the real-time solidification process. Electronic data, and through the time source service synchronized with the National Time Service Center, online works are stamped with legally valid timestamps to prove that electronic files have not been tampered with in a certain period of time. Blockchain technology can establish point-to-point trust in the network, ensuring that all blockchain nodes can record complete copyright confirmation and transaction records, and can trace their origins, truly realizing anti-repudiation and anti-tampering, and realizing a kind of distribution. trust infrastructure.
Founder and CEO Jin Hongzhou believes that the application of decentralized blockchain technology has greatly improved the efficiency of data storage and certificate issuance, as well as the identity of the parties involved. Credibility reduces the cost of trust, but it cannot replace the original centralized public key encryption technology. The two should complement each other. Through the combination of the two, users can be provided with real-time and reliable confirmation solutions. .
Next, e-Shanbao will also focus on building a smart contract platform based on blockchain technology. Jin Hongzhou said that data storage, Issuing certificates is only a relatively superficial application based on blockchain technology. It is the first step to implement blockchain technology, and the realization of real smart contracts is the second step. "Smart contracts cannot simply be understood as electronic contracts. They refer to a process, from the conclusion of the contract to the confirmation to the final execution." Jin Hongzhou explained.
From a technical perspective, blockchain is not a brand-new technology, but a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanisms, encryption algorithms, and smart contracts. Specifically, blockchain technology is a technical solution that collectively maintains a reliable database in a decentralized, high-trust manner.
Due to its advantages such as "decentralization", "distributed data storage", "traceability", "anti-tampering", and "openness and transparency", blockchain technology can effectively solve data problems. By establishing a trustworthy data management environment, we can prevent and avoid various data management problems such as data fraud, tampering, and loss, and promote the efficient sharing and application of data. In the process of practice and exploration, the application scope of blockchain technology continues to expand, especially in the field of public resource transactions, and continues to empower public resource transaction management services.
Facilitate transaction data sharing and transaction witnessing
Facilitate transaction data Share
Currently, the data of different trading centers are not interoperable, and the subject information of different trading centers needs to be entered repeatedly. It is difficult to verify the off-site performance provided by the bidders during the bid evaluation process. It is difficult to troubleshoot the same person repeatedly serving as project manager. Issues such as low cost of breach of trust. Establishing a cross-regional subject database based on blockchain can well alleviate the above problems.
The distributed ledger feature based on the blockchain can effectively ensure the real-time or quasi-real-time sharing of data, and can reduce the repeated entry of subject information; the use of blockchain information that cannot be tampered with can ensure the data circulation process on the chain. The authenticity of the bidders in the regional alliance is directly obtained from the on-chain data, making it impossible to hide the fake performance. At the same time, the sharing of bidding behavior data through the blockchain provides a data basis for the development of "joint punishment of dishonest enterprises".
Blockchain-based transaction witness
"Guiding Opinions on Deepening the Integration and Sharing of Public Resource Trading Platforms" (Letter from the State Council [State Council] Document No. 41 (2019) points out the need to optimize services such as witnessing, venues, information, archives, and expert extraction. However, at present, public resource transaction process witnessing is mainly based on manual on-site witnessing, which has limited witnessing intensity, high occupation of human resources, and limited witnessing effect. Due to its centralized characteristics, the traditional digital witness system is prone to data tampering, and the data is easily damaged or lost during the storage and migration process, which has certain flaws in terms of security and usability.
Utilize the distributed, difficult to tamper, and traceable characteristics of the blockchain to solidify and store the data generated in each transaction link, and accurately record the data generated through time stamp technology, summary algorithm, and electronic signature technology. Time, content, data source. According to the technical characteristics of the blockchain, simple structured data can be directly saved on the blockchain. For unstructured layout files, videos, audio and other large files, the summary information and original files can be saved through the blockchain. Save via a distributed file storage service. When there are disputes or problems in a transaction, the blockchain can provide a set of credible transaction process data and clarify the responsibilities of all parties involved in the transaction. Achieve the goals of risk prevention and control in all aspects, traceability of the entire process, and improvement of all-round services.
Promote the rationalization of electronic guarantee rates
Promote financial services and corporate financing for bidding companies
Promote the rationalization of electronic guarantee rates
At present, electronic bidding deposit guarantee letters have certain applications in the field of bidding, solving the problem of bidding deposit funds for bidding companies. Occupancy issues. However, because financial institutions currently do not have reliable historical bidding behavior data of bidders, they are unable to judge the default risks of different bidders. As a result, the guarantee services charged to bidders adopt fixed rates, which makes a small number of bids with high default risks The cost of personal guarantee is allocated to most bidders with low default risk, which increases the guarantee rates for most bidders to a certain extent.
At present, it is up to the bidder to choose whether to use an electronic letter of guarantee, and the rate is the main choice basis for the bidder. If the bidder performance records are shared through the blockchain and the performance risks of different bidders are analyzed, it will be Different bidders provide different guarantee rates, which not only reduces the risks of financial institutions, but also reduces the use costs of most bidders and promotes the use of bid guarantees. To a certain extent, it can also encourage bidders to abide by their promises and maintain the order of the bidding market. .
Promote bidding corporate financial services
Bidder'sBidding behavior is scattered in various trading centers. Simply aggregating data into a centralized information system will run the risk of data tampering (untrustworthy). Valuable bidder transaction behavior data cannot be gathered and shared safely and reliably. Through blockchain technology, bidders from multiple trading centers are gathered, and historical bidding, winning bids, defaults, violations and other behavioral records provide data support for financial institutions to evaluate the bidders' credit in the bidding sub-sector.
Solving the financing problems of successful bidders
Traditional corporate loans mainly evaluate the company's solvency: collateral, audit There are requirements for accurate financial statements and sustained profitability, but most small and medium-sized enterprises cannot provide these "proofs" at all. Difficulty and expensive financing have become problems faced by many small and medium-sized enterprises in bidding activities. Using the methods of the past will no longer work. To solve the financing difficulties of small and medium-sized enterprises, we can only rely on new technologies and new tools. With the help of the non-tamperable characteristics of blockchain, primary business data from multiple trading centers are gathered, and big data analysis technology is combined to build a portrait of a credible bidder. On the one hand, it improves the risk control level of financial institutions and taps high-quality bidding companies. On the other hand, it lowers the loan threshold for bidding companies and optimizes the service experience.
Drawing on the supply chain finance model, the bidder is a core enterprise with good credit in government departments, national enterprises and institutions, and the winning contract obtained by the winning bidder as a supplier is considered by financial institutions to be a high-quality asset. Apply for a loan from a financial institution. Under the traditional paper-based model, there is a risk of order and contract fraud and the process is cumbersome. Centralized information systems require operators to have strong authority. The distributed ledger and difficult-to-tamper characteristics of the blockchain will help solve the above problems. The contract signing between the tenderer and the bidder and the subsequent financial service links will be realized on the blockchain, which not only solves the problem of data trustworthiness but also reduces the risk of corruption. The entire system relies on a centralized authority.
Through further analysis, we found that credit sales are currently prevalent among domestic enterprises, and the upstream suppliers of the winning bidder have a large funding gap. The credit of the bidder can only be passed to the winning bidder (the winning contract cannot be split or transferred), and the upstream suppliers Business owners are unable to obtain high-quality loans from financial institutions. If the winning contract is converted into a "pass" on the chain, the "pass" can be split, and the winning bidder holding the "pass" can pay part or all of the voucher to the upstream supplier, making it possible to discount and finance. The "tokens" on the chain can be split and transferred from first-level suppliers to second-level (and multi-level) suppliers, thereby allowing core enterprise credit to be transferred to multi-level suppliers. The shortage of funds from suppliers due to credit sales has been solved, improving the business environment; through value transfer through the blockchain, the financing cycle has been greatly shortened; the cost of supplier loans has been reduced, which will help reduce the production costs of raw materials or intermediate products, and ultimately Increase bidders' profit margins and indirectly reduce bidders' costs.
Regarding blockchain, we can imagine it as a decentralized management model and technical solutionMode.
Let me give you an example. There are five people in your family, and they have never been able to figure out how to arrange work and handle family relationships.
So, you and your family discuss it together and simply use voting to solve the problem.
Then this way of voting to solve problems can be called the most elementary blockchain.
Decentralization solves problems.
What application scenarios can blockchain have?
In fact, many of our families and many organizations use blockchain management forms every day
However, this kind of blockchain application for organizational relationships cannot produce Economic Value.
What are the economic applications of blockchain?
The first type is used for tax deposit certificates, bank transfers, etc.
Make full use of the traceability function of the blockchain so that all records can be retrieved and queried at any time
The second type is applied to enterprise operation and management
Enterprises using blockchain management can better solve the problems of enterprise development and allow enterprises to Able to develop faster and make more money.
Summary: The application scenarios of blockchain include taxation, bank transfers, etc., and can also be applied to business operations.
The characteristics of blockchain are distributed accounting and decentralization, but the ultimate goal is to make people get along more equally. Technology is meaningful only when it serves human values, and technology that meets human value needs will develop. Therefore, blockchain is in line with human pursuit of freedom and equality, so its trend to become mainstream is unstoppable.
Currently, there are many blockchain gimmicks, which are basically used to issue coins. The newly launched ono is a decentralized, free and global social platform. Due to decentralization, your chat communication information is peer-to-peer and cannot be viewed by others. In other words, your every word and deed will no longer be recorded and reviewed at any time like it is now on WeChat, QQ, and Facebook, freeing you from the trouble of surveillance.
In fact, blockchain technology can be used in any field. Information that previously required third-party confirmation can be completed online and confirmed at multiple nodes, making it difficult (almost impossible) to delete.
At present, blockchain is still in its infancy, and the technology is not mature enough, but it is also a better time to enter.
Blockchain is a decentralized technology. Blockchain can be applied to all products currently covered by the Internet.
The most popular application industry at present is the financial industry.
The application that has been implemented is product traceability. Alibaba and JD.com are already using blockchain technology to trace some of the products they sell.With full traceability, consumers can trace the origin of the purchased goods. There are also many blockchain applications in the digital advertising industry. Since digital advertising traffic fraud causes losses of tens of billions of dollars every year, there are already blockchain application projects based on digital advertising, such as DCAD, which is based on blockchain. The digital advertising application of blockchain technology mainly solves the problem of traffic fraud
In the future, as the application of blockchain technology becomes more mature, it will be applied in many industries, creating a new ecosystem based on technological trust. Mode
What is blockchain If you explain blockchain in non-technical terms, blockchain is a place where data is stored. However, the data stored in the blockchain is safe and reliable and does not need to be managed by anyone. Therefore, in the Internet, a place where data and information are exploding, having such a place will be like a magical treasure land.
If you ask what the blockchain can do, it is better to say what applications require the use of the blockchain. As mentioned earlier, blockchain is a safe place, so wherever data needs to be protected securely on the Internet, blockchain technology needs to be used. For example:
Because the use of blockchain technology can better protect the data of policyholders, in today’s Internet, data is value and wealth, so value protection and value transmission are the future development directions of the Internet. And blockchain technology can really do just that.
If there are any deficiencies, you are welcome to comment and correct me.
In a narrow sense, blockchain is a chained data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be non-tamperable and non-tamperable. Fake distributed ledger.
The two parties involved in the transaction do not need to know who the other party is, nor do they need a third party for trust endorsement. They only need to trust a common algorithm to establish mutual trust and conduct direct transactions.
Its characteristics are trustlessness and decentralization. The destruction of each node's ledger has no impact on the entire blockchain. The blockchain runs point-to-point payments without a center that may cheat, and the security is greatly improved. Improved, the entire transaction network has changed from a star structure to a point-to-point P2P structure.
In the future, blockchain will be used in many fields and will have a great impact on human life. . It can be widely used in fields ranging from digital currency to securities and financial contracts, medical care, games, artificial intelligence, smart contracts, Internet of Things, e-commerce, file storage and other fields.
1. Cloud storage
This is the statistics of current cloud storage on the Internet. Volume, Google has the largest volume, which is 8000PB, then if we take the idle data of everyone on the InternetShare it?
Starlight Cloud builds a blockchain data computing and storage lake through Starlight Chain, with a total storage capacity of 15,000P (approximately 15.72864 billion G) in the future. This will be more than 10 times that of Alibaba Cloud's 1500PB! It is also more than four times the size of the Taizhou Storage Center, the largest storage lake in the world after expansion.
2. Medical aspects
Using blockchain technology to save personal medical records also retains personal medical historical data, which can be used when seeing a doctor or planning for your own health in the future. Historical data can be called directly. These data are highly private, and the use of blockchain technology also helps protect patient privacy.
7. Is blockchain safe?
When it comes to the essence of blockchain, I believe several keywords are already familiar. For example, decentralization, trustlessness, consensus mechanism, asymmetric encryption, distributed accounting, immutability, absolute transparency, openness, etc. At the same time, some teaching posts also list the structure of the blockchain, such as data layer, network layer, consensus layer, incentive layer, contract layer, and application layer.
However, anyone with a discerning eye can tell at a glance, why is there no security layer? In fact, several key features of blockchain have already solved security issues. First, blockchain uses asymmetric encryption technology. In fact, encryption and decryption are different keys, namely the public key and the private key. To put it simply, the public key is made public, while the private key is absolutely confidential.
Secondly, distributed accounting is the way blockchain stores data. It can also be understood as distributed storage, which is consistent with the concept of decentralization. From the perspective of the form of the ledger, it means that there is no central ledger in the network, and the ledger is stored in each node. Each node can work independently or act as a central node. Therefore, there will be no situation where the central node is attacked, resulting in the loss of core ledgers or data, and the entire network being paralyzed.
Furthermore, non-tamperability is a basic feature of the blockchain. As long as it is on the chain, it cannot be modified, and it cannot be deleted. If changes are needed, based on the principles of transparency and openness, the entire network and all nodes need to be notified. Therefore, under a democratic mechanism, the possibility of arbitrarily tampering with data is very low. Therefore, blockchain technology is applied in various industries, such as finance, payment, traceability, games, etc., such as the online "Universe", Tencent's "Let's Catch Monsters", and Zhongan Huanyu Blockchain's "DR Dragon Hunt" are examples of this area. Safe and high-quality products under blockchain technology.
8. Is blockchain safe?
Hi, everyone, I am your Q&A assistant—Zi Xiaochen. Recently, blockchain resistance has been widely concerned and discussed. But there are many people who don’t know much about its safety. So today we will talk about the security issues of blockchain.
First of all, would you like to hear an easy-to-understand metaphor? A friend of mine joked: "Blockchain is like a password lock. Without a password, no one can open it." Although this is simple and interesting, it makes a lot of sense. Since the blockchain adopts distributedWith ledger technology, data is stored in a huge network, and the transmission between each node uses asymmetric encryption, making the blockchain highly secure and making third-party attacks very difficult.
Secondly, of course there are some security issues that need attention. For example, hacker attack methods such as "51% attack" can pose a threat to the blockchain. In addition, there are also security risks in virtual currency trading venues, such as Bitcoin exchanges, and you need to pay attention to precautions. Therefore, when choosing a blockchain platform or participating in virtual currency transactions, you need to know more and consider carefully to avoid losses.
In short, blockchain is an open technology, which has huge advantages in ensuring data security and preventing tampering. But we also need to be alert to potential security risks and choose reliable platforms and exchanges to participate in cryptocurrency investments.
I hope my answer can help you better understand the blockchain and its security issues. If you have any questions or want to share your experience, please feel free to message me privately! Finally, don’t forget to like, comment and forward, follow my articles, more content is waiting for you!
