区块链服务网络,区块链支付网关

区块链技术是一种分布式记账技术，可以提供安全、可靠的数据存储和交换服务。它利用区块链网络进行数据存储和交换，可以更有效地解决传统网络中的数据安全问题，提高信息交换的安全性和可靠性。本文将从三个关键词：区块链服务网络、区块链支付网关、区块链技术三个方面对区块链进行介绍。

区块链服务网络是一种基于区块链技术的网络服务，它可以将信息存储在区块链网络上，并且可以实现安全可靠的数据传输和交换。它可以支持多种数据类型，包括文本、图像、视频、音频等，可以更有效地实现数据存储和交换。此外，区块链服务网络还可以实现跨境数据交换，使跨境数据交换变得更加安全可靠。

区块链支付网关是一种基于区块链技术的支付网关，它可以实现数字货币的支付和转账服务。它可以支持多种数字货币，包括比特币、以太坊、莱特币等，可以更有效地实现数字货币的支付和转账。此外，区块链支付网关还可以实现跨境支付，使跨境支付变得更加安全可靠。

区块链技术是一种基于分布式记账技术的技术，它可以实现安全可靠的数据存储和交换服务。它可以支持多种数据类型，包括文本、图像、视频、音频等，可以更有效地实现数据存储和交换。此外，区块链技术还可以实现跨境数据交换，使跨境数据交换变得更加安全可靠。

总的来看，区块链技术可以提供安全、可靠的数据存储和交换服务，并且可以实现跨境数据交换和跨境支付，使数据存储和交换变得更加安全可靠。

『一』What is the development status of my country’s blockchain technology?

Domestic blockchain technology has now been conceptualized from the very beginning and has now been applied in practice. In business scenarios, such as Vonetracer traceability system of Vonetracer Technology, their blockchain traceability technology has been applied to actual agricultural products.

『二』Let’s talk about BasS-Blockchain as a Service

1. What is Bass

2. The development trends and challenges of the Bass industry

1. What is Bass?

1.1 Definition: Bass Blockchain as service. That is, it provides one-stop blockchain services to developers and entrepreneurs based on their needs.

BasS is one of the ways to combine cloud computing and blockchain technology. One is that the blockchain is on the cloud, and the other is that the blockchain is in the cloud. That is, the blockchain Bass service. Compared with the first method, the second method is simpler and has lower development costs for developers.

Tencent Cloud and Ant Blockchain both provide BasS services directly. They are said to be cloud service providers themselves, so when combined with cloud services, the cost is low and implementation is easy. For users, of course, the threshold for use is lower, and they can just call the interface directly.

However, small and medium-sized platforms like ours generally provide the first method. In view of our server procurement costs and the security and privacy considerations of customer information data, during the implementation stage, we generally ask customer service to provide servers ( Cloud services or self-built hardware services are acceptable). We have specialized technical personnel to set up the chain on the customer's server. Provide key management solutions according to user needs, and provide users with APIs to interact with the blockchain. (In addition to standardized APIs, we will help users define some API fields according to user needs, and provide users with front-end applications and areas. Upgrade suggestions for blockchain integration), and build underlying visualization (blockchain browser) and management and control systems (authority management system, visual management system), big data processing system, visual large-screen solutions, etc. for users according to their needs.

Note: IasS (Infrastructure as a Service), that is, Infrastructure as a Service. Refers to a service model that provides IT infrastructure as a service through the network and charges based on the actual usage or occupation of resources by users

PasS (platform as a service) PaaS The company provides a variety of solutions for developing and distributing applications online, such as virtual servers and operating systems. This saves you money on hardware and allows for distributed workCollaboration between rooms becomes easier.

Is Alibaba Cloud iaas or paas?

Alibaba Cloud should belong to IaaS, while Sina Cloud, Network Cloud and Network Open Cloud Platform belong to PaaS.

IaaS actually provides a server, and users can install and configure various software environments on the server by themselves. Various functions can be implemented flexibly.

PaaS is currently mainly a WEB environment application, usually supporting PHP, Java, Python and GO languages. It must be developed within the framework of the cloud computing service provider.

IaaS requires you to build your own program running environment. The advantage is flexibility, but the disadvantage is that you need to configure it yourself

PaaS does not require you to configure the environment yourself. The disadvantage is that you must use a designated development language. Follow the development specifications of the platform.

1.2 Technical characteristics of Bass mode

1. Technical framework: relatively stable performance, high versatility, reasonable layered decoupling elements

2. Product system, with one-stop commercialization capabilities, providing functional retreat and mis-scenario adaptation capabilities

3. Ecological construction, in blockchain security, blockchain tools, and blockchain industry Adaptation field itinerary partner matrix to accelerate commercialization

4. Application practice, with core capabilities such as measurable value, versatility, templates, and flexible industry adaptation

1.3 The difference between BaaS and BTaaS.

BTaaS, namely Blockchain Technology as a service, refers to the use of blockchain technology to build a new blockchain and Combined with the needs of real business, applications are developed on the chain or combined with applications.

From this, the service we provide is actually closer to BTaaS.

1.4 Relevant data predicts that the blockchain BasS market will exceed US$30 billion in 2024.

I don’t know how to predict it! In fact, I should look for information myself and think carefully about what this market is like!

2.Bass development trends and challenges

2.1 Trends

The prospect is relatively broad and the development is rapid. Since the concept of blockchain as a service was proposed, , many giants in the world have entered the game. With the development of blockchain technology, the Bass market will usher in a large-scale explosion.

Multiple oligopolies and BaaS in vertical fields coexist and develop. Not only giants, but also blockchain manufacturers in multiple vertical fields have entered BasS. For example, Zhigui, which specializes in copyright, has also launched its own BasS platform.

The technical differences are small and the products and services are the main features

Most of the underlying blockchain platforms use the Hyperledger or draw on the Ethereum framework. The technical differences are actually Relatively small, the future competitiveness lies more in product ideas and service capabilities.

The BasS platform still has some way to go before it is truly decentralized.

True decentralization actually still depends on the public chain. In addition to coins, are there other incentives for the operation of the public chain? Need to think

But I have always believed that in the future there will be a high-performance public chain connecting the entire world, and we can build our own chain and selectively link the required data to this public chain. , achieve openness and credibility!

2.2 Challenges

The limitations of the blockchain technology itself: Limited by the performance of the blockchain technology itself, TPS cannot be achieved, and many seemingly good It is difficult to implement applications, such as transactions and settlements in the financial field.

The development of other technologies: In addition to transactions, blockchain technology itself is only a trusted storage method. It can only guarantee the authenticity of the chain. Every interaction with the real world It requires credit endorsement. Many of its application scenarios, such as traceability, actually rely on the development and application of other technologies such as the Internet of Things and digital identity, and require guarantees from systems and rules.

People’s perception: Blockchain technology is still in a very early stage of development. Most people don’t understand it and are not even willing to accept it, so there are not many real applications. .

『三』What is the development trend of blockchain and the future development trend of blockchain

The dual-layer policy and market drive the blockchain industry with broad development prospects
Policy and market Driven by two layers, China's blockchain-related industries are expected to move from reality to reality
In the context of the rapid development of blockchain, China complies with the needs of globalization, keeps up with international pace, and actively promotes research in domestic blockchain-related fields. , standardization formulation and industrialization development. Compared with the background of increasingly strict supervision of digital currencies such as Bitcoin, support and encouragement for blockchain technology has reached a global consensus, and domestic blockchain technology will also receive national and local policies in the next few years. support. Driven by the dual layers of policy and market, blockchain-related industries are expected to move from reality to reality, and blockchain technology will accelerate the exploration of possible application scenarios.
Global Blockchain Market Scale Forecast
According to the "In-depth Analysis of Business Model Innovation and Investment Opportunities in the Blockchain Industry" released by the Qianzhan Industry Research InstituteData from the "Analytical Report" show that the global blockchain market size is expected to increase from US$411.5 million in 2017 to US$7.6837 billion in 2022, equivalent to a compound annual growth rate of 79.6%. Given the wide range of applications for distributed ledgers and the rising market value of cryptocurrencies, there is a strong need to improve transparency, security, efficiency and streamline processes, as well as blockchain as a service (
BaaS). As a hot topic of development, the blockchain market will expand rapidly. In addition, communication services, international trade, supply chain management, program platforms, payments, smart contracts, digital identity verification, etc. also urgently need blockchain technology and will create a large number of growth opportunities.
Blockchain, as an integrated application of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other technologies, has become a hot topic of research and discussion by international organizations such as the United Nations and the International Monetary Fund as well as governments of many countries in recent years. The industry has also increased investment. At present, the application of blockchain has extended to many fields such as the Internet of Things, intelligent manufacturing, supply chain management, and digital asset transactions, and will bring new opportunities to the development of new generation information technologies such as cloud computing, big data, and mobile Internet. , has the ability to trigger a new round of technological innovation and industrial change.
By 2022, the payment sector may occupy the largest share of the blockchain market
Relying on blockchain technology, instant payment of assets can be realized, which not only has the characteristics of non-tampering and digital identity verification, but also can provide Financial institutions and banks significantly save settlement costs. In addition, blockchain makes it possible to automate payments, eliminating the need for middlemen, saving labor costs and time for buyers and sellers. Thanks to the many advantages mentioned above, it is expected that the payment sector will be the most important segment in the entire blockchain market.
The fastest growing region will be the Asia-Pacific
Blockchain service providers in the Asia-Pacific region are good at designing and developing user-friendly, cost-saving and fast cryptocurrency platforms, extending the blockchain to multiple Industry application tentacles. Both large enterprises and small and medium-sized enterprises are actively seeking venture financing and investing in the research and development of cutting-edge blockchain technology. In addition, the real estate industry in some countries in the Asia-Pacific region is expected to rapidly transform from semi-transparent to fully transparent, which will also help enhance the development prospects of blockchain in the Asia-Pacific region.

『四』 What are the 7 core technologies for blockchain operation that you should know?

How many of the 7 core technologies for blockchain operation do you know?
1. Blockchain links
As the name suggests, blockchain is a chain composed of blocks. Each block is divided into two parts: block header and block body (including transaction data). The block header includes the hash (PrevHash) value (also called hash value) of the previous block used to implement block linking and the random number (nonce) used to calculate the mining difficulty. The hash value of the previous block is actually the hash value of the header of the previous block, and the rules for calculating random numbers determine which miner can obtain the power to record the block.
2. Consensus machine
Blockchain was born with Bitcoin and is the basic technical architecture of Bitcoin. Blockchain can be understood as a decentralized accounting system based on the Internet. A decentralized digital currency system like Bitcoin requires blockchain to ensure the consistency of accounting by each honest node without a central node. Therefore, the core of blockchain technology is a consensus mechanism that reaches consensus on the legality of transactions among individuals who have no basis for trust in each other without central control.
There are currently four main categories of blockchain consensus mechanisms: PoW, PoS, DPoS, and distributed consensus algorithms.
3. Unlocking scripts
Scripts are an important technology for automatic verification and automatic execution of contracts on the blockchain. Each output of each transaction does not strictly point to an address, but to a script. A script is like a set of rules that govern how the recipient can spend the assets locked on this output.
The legality verification of transactions also relies on scripts. Currently it relies on two types of scripts: locking scripts and unlocking scripts. The locking script is a condition added to the output transaction, implemented through a script language, and is located at the output of the transaction. The unlocking script corresponds to the locking script. Only if the conditions required by the locking script are met, the corresponding assets on this script can be spent, which is located at the input of the transaction. Many flexible items can be expressed through scripting language. The interpretation script is similar to a "virtual machine" in our programming field, which is distributed and runs on every node in the blockchain network.
4. Transaction Rules
Blockchain transactions are the basic units that constitute blocks, and are also the actual effective content that the blockchain is responsible for recording. A blockchain transaction can be a transfer or other transactions such as the deployment of smart contracts.
In the case of Bitcoin, a transaction refers to a payment transfer. The trading rules are as follows:
1) The input and output of the transaction cannot be empty.
2) For each input of the transaction, if its corresponding UTXO output can be found in the current transaction pool, the transaction will be rejected. Because the current transaction pool is a transaction that has not been recorded in the blockchain, and each input of the transaction should come from a confirmed UTXO. If found in the current transaction pool, it is a double spend transaction.
3) For each input in the transaction, its corresponding output must be UTXO.
4) Each input unlocking script must work with the corresponding output locking script to verify the compliance of the transaction.
5. Transaction Priority
The priority of blockchain transactions is determined by the blockchain protocol rules. For Bitcoin, the priority of a transaction being included in a block is determined by the time it takes for the transaction to be broadcast to the network and the size of the transaction. As the time it takes for a transaction to be broadcast to the network increases and the chain age of the transaction increases, the priority of the transaction is increased and will eventually be included in the block. For Ethereum, the priority of a transaction is also determined by how much the publisher of the transaction is willing to pay.Related to transaction fees, the higher the transaction fee the publisher is willing to pay, the higher the priority of the transaction being included in the block.
6.Merkle proof
The original application of Merkle proof is the Bitcoin system (Bitcoin), which was described and created by Satoshi Nakamoto in 2009. The Bitcoin blockchain uses Merkle proofs in order to store transactions in every block. This makes the transaction unable to be tampered with and makes it easy to verify whether the transaction is included in a specific block.
7.RLP
RLP (Recursive Length Prefix, recursive length prefix encoding) is a main encoding method for object serialization in Ethereum. Its purpose is to encode any nested sequence of binary virtual data. Lu Ji

『Wu』 What is blockchain

Let’s talk about some basic concepts first.

The network said that blockchain is a new usage model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanisms, and encryption algorithms. It is essentially a decentralized database, and as the underlying technology of Bitcoin, it is a series of data blocks generated by cryptography.

We try to translate "what is blockchain" into "human language".

The definition refers to the "decentralized database" nature of blockchain3354. This is very different from the traditional "centralized database" in storage, update and operation.

A centralized database can be thought of as having this shape:

For example, if I want to use Alipay to pay a Taobao seller, all data requests from when I make money to when he receives the money will be centrally processed by Alipay. The advantage of this data structure is that as long as Alipay is responsible for the efficient and safe operation of the system, others can unconditionally believe it without worrying; the disadvantage is that if there is a problem with Alipay, such as being hacked, the server being burned, a traitor appearing, and the company running away (Of course, the possibility of the above is extremely low), the balance details and other information in our Alipay will be confused.

Then some people think that this kind of low-probability event can use any technical means to avoid individual risks, and not only hand over the data to a centralized organization. For example, everyone can store and process data.

The database structure may look like this:

This picture is a schematic structural diagram of a "distributed database". Each point is a server, they all have equal rights to record and calculate data, and information is spread point-to-point. At first glance, it seems that it can indeed resist the risk caused by the crash of a certain node, but it is also very confusing and inefficient intuitively. Who will handle my information, and who has the final say on the outcome?

At this time, the "consensus mechanism" in the definition of blockchain comes into play. The consensus mechanism mainly "stipulates" the following things: who will process a data request (what qualifications are required); who will verify the results (to see if he has handled it well); how to prevent processors and verifiers from colluding with each other, etc.

Some people may like to be questioned when a "rule" is made.In order to form a stronger consensus, in addition to making the rules more reasonable, they must also be more attractive so that people are interested and motivated to participate in data processing. This involves the incentive mechanism of the public chain. We will start again later when we discuss the classification of blockchain and the role of digital currencies.

When we hand over a transaction to a distributed network, there is also a "psychological threshold": there are so many nodes that can process information, and I don't know any of them (unlike Alipay, if it hurts me, I can go and file a lawsuit against it). They all have my data, why should I trust them?

At this time, encryption algorithm (the last descriptive word in the definition of blockchain) comes on stage.

In the blockchain network, the data requests we send will be encrypted according to cryptographic principles into a string of characters that the recipient cannot understand at all. Behind this encryption method is the support of a hash algorithm.

Hash algorithms can quickly convert any type of data into hash values. This change is one-way irreversible, deterministic, random, and anti-collision. Because of these characteristics, the person handling my data request could record the information for me, but they had no idea who I was or what I was doing.

So far, the working principle of the decentralized network has been introduced. But we seem to have overlooked one detail. The previous diagram is a net. Where are the pulleys and chains? Why do we call it blockchain?

To understand this matter, we need to clarify a few knowledge points first:

The previous picture is actually a "macro" database perspective, showing the basic rules and processes of the blockchain system for processing information. . And specifically at the "micro" data log level, we will find that the ledger is packaged, compressed, stored in blocks, and strung together in chronological order to form a "chain structure", like this:

Figure Each ring in can be regarded as a building block, and many links are linked together to form a blockchain. Blocks store data, unlike ordinary data storage: on a blockchain, the data in a later block contains the data in the previous block.

In order to academically explain the fields of each part of the data in the block, we tried to use a book metaphor to describe what a blockchain data structure is.

Usually, when we read a book, we read the first page, then the second and third pages. The spine is a physical existence that fixes the order of each page. Even if the book is scattered, the order of each numbered page can be determined.

Inside the blockchain, each block is marked with a page number, the second page contains the content of the first page, the third page contains the content of the first and second pages. The tenth page contains the previous Nine pages of content.

It is such a nested chain that can be traced back to the original data.

This brings up an important attribute of blockchain: traceability.

When the data in the blockchain needs to be updated, that is when new blocks are generated in sequence, the "consensus algorithm" comes into play again. This algorithm stipulates that a new block can only be formed if it is recognized by more than 51% of the nodes in the entire network. To put it bluntly, it is a matter of voting, and it can be elected if more than half of the people agree. thisThis makes the data on the blockchain difficult to tamper with. If I were to force a change, there would be too many people to bribe and the cost would be too high to be worth it.

This is what people often call the "non-tamperable" feature of blockchain.

Another reason why blockchain gives people a sense of trust is because of "smart contracts."

Smart contracts are commitment agreements defined and automatically executed by computer programs. It is a set of transaction rules executed by code, similar to the current automatic repayment function of credit cards. If you turn on this function, you don’t have to worry about anything. The bank will automatically deduct the money you owe when it is due.

When your friend borrows money from you but doesn't remember to pay it back, or makes excuses not to pay it back, smart contracts can prevent breach of contract. Once the terms in the contract are triggered, such as when it is time to pay back the money, or there is a limit in his account, the code will automatically execute, and the money he owes you will be automatically transferred back whether he wants it or not.

Let’s briefly summarize. Blockchain technology is mainly decentralized, difficult to tamper with, and traceable, which represents more security and trustlessness. But it also brings new problems: redundancy and inefficiency, which requires many nodes to agree with the rules and actively participate.

This concludes the "drying" section. Next, let’s talk about unofficial history and the official history of blockchain.

A new technology is often used to serve a certain task.

Or goals. So where was blockchain first used, and who came up with it first?

Let's go back to 2008.

On September 21, Wall Street investment banks collapsed one after another, and the Federal Reserve announced that it would convert the only two remaining investment banks (Goldman Sachs Group and Morgan Stanley) into commercial banks; it hoped to survive the financial crisis by absorbing savings. On October 3, the Bush administration signed a $700 billion financial rescue package.

Twenty-eight days later, on November 1, 2008, a new post appeared in a cryptography mailing group: "I am developing a new electronic currency system that is completely peer-to-peer and does not require a third party. Three-party trust institution." The text of the post is a paper titled "Bitcoin: A Peer-to-Peer Electronic Cash System", signed by Satoshi Nakamoto.

The paper explains the design of this peer-to-peer electronic cash system with a more rigorous logic. It first discusses the problem that financial institutions are subject to "trust based" (based on credit), and then explains step by step how to achieve "no third-party agency" , and cleverly solved the technical problems left by the predecessors.

Two months later, Satoshi Nakamoto released the first version of the open source Bitcoin client and mined 50 Bitcoins for the first time. The block that generated the first batch of Bitcoins is called the "Genesis block". The genesis block was compiled into block 0 and was not uploaded to the chain. It took Satoshi Nakamoto 6 days to mine this block. This also sparked discussion in the bitcointalk forum. Bitcoin "believers" thought of the Bible, "God created the heaven and earth in six days, and on the seventh dayRest in peace.”

Although concepts such as decentralized, token, and economy did not appear in the paper, Satoshi Nakamoto explained in detail the block and chain ( Chain) working principle in the network. So, there is Block Chain.

This paper later became the "Bible" of the "Bit Cult", and technology became the cornerstone of faith. Developers The document became the "Code of Hammurabi."

After that, Bitcoin realized the first real-life payment by exchanging pizza, WikiLeaks, whose account was blocked by the US government, miraculously survived by relying on Bitcoin, and Satoshi Nakamoto's "delegation of power" " and retirement, true and false appearances, and refutation of rumors, etc. A series of legends, etc., merged with the expectations, imagination and speculation of later generations, and became "Biblical stories".

Some people are not satisfied with the "Old Testament" The described world started a new sect, wrote the doctrines into white papers, and told the story of their faith in the ten years after Bitcoin. Just like the writing of 66 volumes of the Bible spanned 1,500 years, and after 2,000 years of interpretation, Christianity It has divided into 33,000 branches.

CoinMarketCap shows that there are more than 4,900 types of digital currencies, and the overall digital currency market size is nearly 140 million yuan. Bitcoin still leads the entire digital currency market with a market share of 66%, and the recent price is 7,200 Hovering around the U.S. dollar/coin.

So many currencies have different functions and are divided into different categories: Digital currencies represented by Bitcoin are positioned as "digital gold" and have certain functions of storing value, avoiding Risk characteristics; digital currencies represented by Ethereum have become the "operational fuel" in its network system; stablecoins represented by USDT and Libra have good payment properties due to their low volatility; digital currencies represented by DCEP The central bank issues digital currency, which to a certain extent replaces M0, allowing commercial institutions and ordinary people to avoid delays in receipts and payments when they have no cash and are disconnected from the Internet.

It can be seen that after 10 years of development of blockchain technology, the initial and most " The biggest use is digital currency.

Digital currency has also become an attractive reward for participants to maintain the public chain.

So besides digital currency, where else can blockchain technology be used?< p> Let us recall what the essence of blockchain is - a decentralized database, and its corresponding characteristics: traceability, publicity, anonymity, and tamper-proof. In theory, traditional centralized databases can be used You can try to use blockchain to transform any scenario to see if it is suitable.

Next, let’s talk about a few industries and scenarios that have successfully implemented blockchain:

Blockchain can pass hashes Timestamps prove the existence of a certain file or digital content at a specific time, providing a perfect solution for forensic authentication, identity certification, property rights protection, anti-counterfeiting and traceability, etc.

In the field of anti-counterfeiting and traceability, blockchain technology can be used to track supply chain It is widely used in various fields such as food and medicine, agricultural products, alcohol, luxury goods, etc.

Give two examples.

Blockchain can allow government data to be run, greatly streamlining service processes

The distributed technology of blockchain can allow government departments to be centralized on one chain, and all service processes are delivered to smart contracts, and the workers only need to be in one department Through identity authentication and electronic signature, smart contracts can be automatically processed and transferred, and all subsequent approvals and signatures can be completed in sequence.

Blockchain invoices are the earliest use of blockchain technology in China. 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 "immediate reimbursement of invoices" - in seconds Level invoicing and minute-level reimbursement accounting greatly 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.

Give two examples as well.

The eID network identity operation agency guided by the Third Research Institute of the Ministry of Public Security is jointly developing a "digital identity chain" with Gongyilian, which will be issued to Chinese citizens based on the citizen's identity number as the root and cryptographic algorithm. Since it was put into operation, the eID digital identity system has served the full life cycle management of 100 million eIDs, effectively alleviating the problems of personal identity information being fraudulently used, abused and privacy leaked.

Odaily Planet Daily compiled 5 identity chain projects registered with the Cyberspace Administration of China

Blockchain technology naturally has financial attributes

In terms of payment and settlement, under the blockchain distributed ledger system, there are many markets Participants jointly maintain and synchronize a "general ledger" in real time. In just a few minutes, they can complete payment, clearing, and settlement tasks that currently take two or three days to complete, reducing the complexity and cost of cross-bank and cross-border transactions. At the same time, the underlying encryption technology of the blockchain ensures that participants cannot tamper with the ledger, ensuring that transaction records are transparent and safe. Regulators can easily track transactions on the chain and quickly locate high-risk capital flows.

In terms of securities issuance transactions, the traditional stock issuance process is 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. The issuer can handle the issuance on its own through smart contracts. , regulatory authorities conduct unified review and verification, and investors can also bypass intermediaries for 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.

Give me an example.

By ICBC,The China Enterprise Cloud Chain jointly launched by the Postal Savings Bank, 11 central enterprises, etc. has covered 48,000 companies since its establishment in 2017. The amount of rights confirmed on the chain has reached 100 billion yuan, factoring financing has reached 57 billion yuan, and the cumulative transactions have reached 300 billion yuan. Yuan. After receiving the loan application, financial institutions can verify the authenticity of the contract on the chain and whether the contract has been verified multiple times (multiple loans); the smart contract automatically clears and settles, reducing costs and increasing efficiency; at the same time, the accounts payable of core enterprises can have The corresponding vouchers will be split by the first-level suppliers and handed over to the second- and third-level suppliers in the chain to help them with financing; core enterprises can also use this to understand whether the entire chain is operating normally and avoid emergencies. Redemption pressure.

Blockchain technology will greatly optimize the existing use of big data and play a huge role in data circulation and sharing

The aforementioned areas are areas that we are relatively familiar with. As more new technologies develop, blockchain may be able to be combined with them and play a role in unexpected cross-fields and new scenarios that are currently unforeseen.

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 the use of all data 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 use 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 usage 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.

During this trial process from traditional technology to blockchain, we found that when certain scenarios have stronger demands for traceability, tamper-proofing, and decentralization, they also have problems with the weaknesses of blockchain (such as performance). , the requirements are not high, and this field is quite suitable for combining blockchain.

At the same time, in the process of blockchain evolution, it has also developed from a highly decentralized public chain accessible to everyone to a consortium chain with different permissions and maintained by multiple centers. Balances the advantages and disadvantages of the two systems.

Typical examples of alliance chains include: FISCO BCOS jointly developed by WeBank and the Golden Alliance Open Source Working Group, Fabric, a major contribution from IBM, and Ant Alliance Chain led by Ant Blockchain, etc.

These trustless systems represent more secure data authentication and storage mechanisms, where data is effectively authenticated and protected. Businesses or individuals can exchange or enter into contracts digitally, where those contracts are embedded in code and stored in a transparent,Shared databases where they are protected from deletion, tampering and revision.

It is boldly predicted that in the future, contracts, audits, tasks, and payments will all be digitized with unique and secure signatures. Digital signatures will be permanently identified, authenticated, legalized, and stored, and cannot be tampered with. There is no need for an intermediary to guarantee each of your transactions. You can conduct transactions without knowing the basic information of the other party. While improving information security, it effectively reduces transaction costs and improves transaction efficiency.

Generally speaking, there has been a lot of progress in the implementation of blockchain compared to two years ago.

Many improvements are at the bottom of the system, and users cannot directly see that blockchain is used, but they have actually benefited from it; some applications are still in pilot mode, and users have not yet been able to experience it. In the future, blockchain is expected to be used on a large scale and become one of the Internet infrastructure.

I hope that after reading this, you have a general understanding of what blockchain is and what blockchain can do.

Related Q&A: What is blockchain

Blockchain is actually equivalent to a disintermediated database, which is composed of a series of data blocks. Each of its data blocks contains information about a Bitcoin network transaction, which is used to verify the validity of the information and generate the next block.

In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be non-tamperable and non-forgeable. distributed ledger.

In a broad sense, blockchain is actually a distributed infrastructure and computing method, which is used to ensure the security of data transmission and access.

Blockchain infrastructure:

Blockchain is composed of six infrastructures: data layer, network layer, consensus layer, incentive layer, contract layer and usage layer.