What is completeness in blockchain

Ⅰ What are the advantages of blockchain

The advantages of blockchain are mainly reflected in the following points:
1. Decentralization
Due to the use of distributed accounting and storage, There is no centralized hardware or management organization, the rights and obligations of any node are equal, and the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system.
2. Openness
The system is open, except that the private information of the transaction parties is encrypted, the data of the blockchain is open to everyone, and anyone can query the blockchain through the public interface Data and development related applications, so the entire system information is highly transparent.
3. Autonomy
Blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms) to enable all nodes in the entire system to exchange data freely and securely in a trustless environment , so that trust in “people” is changed to trust in machines, and any human intervention will not work.
4. Information cannot be tampered with
Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% of the nodes in the system can be controlled at the same time, the database on a single node will not be tampered with. The modification is invalid, so the data stability and reliability of the blockchain is extremely high.
5. Anonymity
Because the exchange between nodes follows a fixed algorithm, the data interaction is trustless (the procedural rules in the blockchain will judge by themselves whether the activity is valid), so the counterparty does not need to It is very helpful for the accumulation of credit to allow the other party to generate trust through public identity.

As above, there are many applications of blockchain now, and it has been applied to various fields, such as GSN in social banking. GSN’s application of blockchain technology to finance can effectively reduce financial risks. Because the participating market entities will improve their credit management level due to the use of blockchain technology, on the other hand, it will also be beneficial to the construction and improvement of the entire social credit body.

Secondly, GSN can transform the traditional credit management based on experience and system design to a blockchain management model supported by technical means. The technological content improves the precision and rigor of management.

Finally, GSN can effectively reduce the current high cost of social credit, open up information islands between commercial information, and effectively prevent social credit information from being compromised, leaked, or tampered with. Blockchain has a wider range of application scenarios in building a whole-of-society credit trust system and promoting digital inclusive credit reporting.

Ⅱ Advantages of blockchain technology

1. Decentralization:
Blockchain technology does not rely on additional third-party management agencies or hardware facilities, and there is no central control , in addition to the self-contained blockchain itself, through distributed accounting and storage, each node realizes the self-verification, transmission and management of information. Decentralization is the most prominent and essential feature of blockchain.
Second, openness:
The foundation of blockchain technology is open source, except that the private information of the transaction parties is encrypted, the data of the blockchain is open to everyone, and anyone can The interface queries blockchain data and develops related applications, so the entire system information is highly transparent.
3. Independence:
Based on consensus specifications and protocols (similar to various mathematical algorithms such as the hash algorithm used by Bitcoin), the entire blockchain system does not depend on other third parties, and all nodes can Automatically and securely authenticate and exchange data within the system without any human intervention.
4. Security:
As long as 51% of all data nodes cannot be controlled, it is impossible to manipulate and modify network data arbitrarily, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes.
V. Anonymity:
Unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information transmission can be carried out anonymously.
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Ⅲ What are the characteristics of the blockchain

Blockchain has the following characteristics:

1. Decentralization. Blockchain technology does not rely on additional third-party management agencies or hardware facilities, and there is no central control. Except for the self-contained blockchain itself, through distributed accounting and storage, each node realizes information self-verification, transmission and management. Decentralization is the most prominent and essential feature of blockchain.

2. Openness. The foundation of blockchain technology is open source. In addition to the encrypted private information of transaction parties, blockchain data is open to everyone. Anyone can query blockchain data and develop related applications through public interfaces. System information is highly transparent.

3. Independence. Based on consensus specifications and protocols (similar to various mathematical algorithms such as the hash algorithm adopted by Bitcoin), the entire blockchain system does not rely on other third parties, and all nodes can automatically and securely verify and exchange data within the system without the need for Any human intervention

(3) What is the completeness of the blockchain? Extended reading:

Application of the blockchain:

1. Application in the financial industry

It can be said that blockchain technology is very suitable for application in the financial industry, just like our common international exchange, letter of credit, equity registration and stock exchange, etc. , blockchain technology can play a very large value, especially when making transaction payments, blockchain technology can directly bypass third parties to achieve fast payment, which can greatly reduce costs.

2. The Internet of Things Industry

The application of blockchain technology in the Internet of Things industry is also one of the fields that people are optimistic about and has very good prospects. It is very simple that the logistics industry For example, through blockchain technology, the status of products and goods can be monitored and inquired in real time at any time, and the efficiency of supply chain management can be improved.

3. The field of public service

It has to be said that the field of public service can be said to be closely related to people’s lives. There are also quite a few problems, so on the issue of centralization, we can use blockchain technology to achieve the effect we want.

4. In the field of digital copyright

For various reasons, there are not a few cases of infringement in our society, and through blockchain technology, we can obtain timely rights to our own works. , upload the corresponding certification materials to ensure the authenticity of their rights and interests, and confirm that the works will have corresponding records in all subsequent places.

IV Whether the blockchain can achieve Turing completeness

Turing completeness is originally a concept from computers, it is a variety of code languages ​​written by programmers, plus a The arithmetic rules that can operate perfectly in a virtual machine such as a Turing machine, so a logic system, device or programming language that meets such requirements is called Turing complete. Although Bitcoin is safe, complex logic programs cannot be developed on its system, which makes the landing scenarios and applications of blockchain very few in the early years. With the development of the blockchain, these requirements are constantly on the agenda, and people gradually need a system that can support the development and operation of blockchain applications, so the blockchain introduces the concept of Turing completeness.
After Bitcoin, in order to realize richer functions and usage scenarios, some Turing-complete blockchain systems came into being. This is what a friend of mine in Xuanling Technology told me, very good and powerful

IV What are the characteristics of the blockchain

Blockchain technology has three obvious characteristics: Openness, security and uniqueness.
Openness mainly means that the stored information in the blockchain is completely open to all participants. This is mainly determined by the point-to-point network storage method of the blockchain. In the blockchain network, each node can store a copy of the blockchain, and the uniqueness of the blockchain can ensure that this copy is between different nodes. exactly the same.
Security mainly means that the information stored in the blockchain block is stored after being processed by digital encryption technology, and only the holder of the private key can decrypt the information to obtain the real information. Other members can only see and verify the integrity and uniqueness of the information, but cannot see the real information.
The unique feature is mainly because the information on the blockchain cannot be tampered with once it is on the chain, so it is unique. Of course, the uniqueness mentioned here also includes the uniqueness in space, that is, all nodes have only one information of the same version, and also includes the uniqueness in time.Uniqueness, that is, historical data cannot be changed. This uniqueness also refers to the feature that the blockchain maintains the only main chain during its operation, and once other chains appear, a fork occurs. The appearance of forks will lead to the appearance of copies of the blockchain in two different spatial dimensions. Of course, this problem needs to be avoided by setting reasonable consensus rules. When the blockchain concept was hot, many related top domain names were registered and used as blockchain platforms.

Ⅵ What are the main features of the blockchain

Decentralization
Due to the use of distributed accounting and storage, there is no centralized hardware or management organization, any node The rights and obligations of the system are equal, and the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system.
Open
The system is open, except that the private information of the transaction parties is encrypted, the data of the blockchain is open to everyone, and anyone can query the blockchain data and data through the public interface. Develop related applications, so the entire system information is highly transparent.
Autonomy
Blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms) so that all nodes in the entire system can exchange data freely and securely in a trustless environment, making Trust in “people” was changed to trust in machines, and any human intervention would not work.
The information cannot be tampered with
Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% of the nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid, so the data stability and reliability of the blockchain is extremely high.
Anonymity
Because the exchange between nodes follows a fixed algorithm, the data interaction is trustless (the procedural rules in the blockchain will judge whether the activity is valid or not), so the counterparty does not need to pass the public The way of identity allows the other party to trust itself, which is very helpful for the accumulation of credit

VII What are the characteristics of the blockchain

The characteristics of the blockchain

One of the four major characteristics of blockchain: immutability

The most easily understood feature of blockchain is that it cannot be tampered with.

Immutable is formed based on the unique ledger of “block+chain”: blocks with transactions are continuously added to the end of the chain in chronological order. To modify the data in a block, all blocks after it need to be regenerated.
One of the important roles of the consensus mechanism is that it is extremely expensive to modify a large number of blocks, making it almost impossible. Taking a proof-of-work blockchain network (such as Bitcoin, Ethereum) as an example, only with 51% of the computing power can it be possible to regenerate all blocks to tamper with data. However, destroying data is not in the self-interest of players with large computing power, and this practical design enhances the reliability of data on the blockchain.
In general, transaction data in the blockchain ledger can be considered as not being “modified”, it can only be “modified” by new transactions that are approved. The process of correction will leave traces, which is why the blockchain cannot be tampered with, and tampering means changing or misinterpreting it by false means.
In the files and relational data that are commonly used now, unless a special design is adopted, the system itself does not record the traces of modification. The blockchain ledger adopts a different design from files and databases. It draws on the actual ledger design—retaining traces of records. Therefore, we cannot “modify” the ledger without leaving a trace, but only “modify” the ledger (see Figure 2).

Figure 6: Bitcoin is decentralised in organisations, logically centralised

In envisioning future organisations At the time, the ideal prototype in our minds is often the organization of Bitcoin: a fully decentralized autonomous organization. But in practice, in order to be efficient and able to advance, we will move slightly closer to the centralized organization, and finally find a suitable balance point.

Now, in blockchain projects that create and issue tokens through Ethereum’s smart contracts and operate in a community or ecological manner, the ideal state of many projects is an organization similar to Bitcoin , but the reality is somewhere between a fully decentralized organization and a traditional company.

When discussing the fourth feature of blockchain, decentralized self-organization, we are actually moving out from the world of code, involving the organization and collaboration of people. Now, various discussions and practical explorations also reveal the significance of blockchain beyond technology: it may serve as infrastructure to support human production organization and collaborative change. This is another example of the complete isomorphism between the blockchain and the Internet. The Internet is not just a technology, it has changed the organization and collaboration of people.

In general, Ethereum brings blockchain to a new level. When discussing Ethereum, such asIf I want to summarize two keywords, then these two keywords are smart contracts and tokens; and if I can only say one, I will choose “tokens”. I would prefer to find its meaning in the history of the Internet, repeating the previous analogy: as a token as a representation of value, its role is similar to HTML. With HTML, what kind of website we build is entirely up to our imagination.

VIII What are the characteristics of blockchain

Blockchain features: 1. Security: not attacked by any person or entity; 2. No information can be tampered with; 3. Traceable, All nodes in the network are accessible; 4. Decentralized, no third parties. About blockchain news, you can learn about it at Crypto Finance.

IX Characteristics of Blockchain

1. Decentralization

The so-called decentralization refers to the fact that the blockchain uses distributed accounting and storage, There is no centralized hardware or management organization, the rights and obligations of any node are equal, and the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system.

2. Openness

The so-called openness means that the blockchain system is open. Open, anyone can query the blockchain data through the open interface, and can develop related applications, and the information of the entire system is highly transparent.

3. Autonomy

The autonomous feature of blockchain is based on specifications and protocols. The blockchain adopts consensus-based specifications and protocols (such as open and transparent algorithms), so that all nodes in the system can exchange data freely and securely in a trustless environment, so that trust in “people” can be replaced by trust in machines trust that no human intervention can make a difference.

4. Information cannot be tampered with

The so-called information cannot be tampered with, that is, once the information is verified and added to the blockchain, it will be permanently stored, unless more than 51% of the nodes in the system are controlled at the same time, the modification of the database on a single node is invalid.

Because of this, the stability and reliability of blockchain data are very high, and blockchain technology has fundamentally changed the way of centralized credit creation, through mathematical principles rather than centralized credit institutions To establish credit at low cost, birth certificates, real estate certificates, marriage certificates, etc. can be notarized on the blockchain, with a global central node, and become something trusted by the world.

5. Anonymity

The so-called anonymity means that the exchange between nodes follows a fixed algorithm, and its data interaction does not need to be trusted. The other party has confidence in himself, which is conducive to the accumulation of credit.

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