区块链的三大种类有什么不同之处,区块链的三大种类有什么不同

区块链是一种分布式账本技术，它是由一系列的区块组成的，每个区块都存储着一定数量的交易信息。区块链可以分为三种类型：公有链、联盟链和私有链。每种链都有自己的特点，下面将对它们进行详细介绍，并讨论它们之间的不同之处。

公有链是一种开放的、去中心化的区块链网络，它是全球用户共同维护的。它允许任何人加入网络，参与网络的维护，并可以自由地使用网络上的服务。公有链的优点在于，它能够让用户自由地参与网络的维护，它也具有良好的安全性，因为它是由全球用户共同维护的，攻击者很难破坏这种网络。

联盟链也是一种分布式账本技术，但它是一种特殊的私有区块链，它是由一组特定的参与者共同维护的。它的优点在于，可以更好地控制网络的安全性，因为只有特定的参与者才能参与网络的维护，他们也可以更好地控制网络上的交易。联盟链也可以更快地处理交易，因为只有特定的参与者可以参与网络的维护，这样可以减少交易的延迟。

私有链是一种特殊的区块链网络，它是由一个特定的组织或公司维护的。私有链的优点在于，它可以更好地控制网络上的交易，因为只有特定的组织或公司才能参与网络的维护。它也可以更好地保护数据的安全性，因为只有特定的组织或公司才能参与网络的维护，攻击者很难破坏这种网络。

从上面可以看出，公有链、联盟链和私有链之间有很多不同之处。它们的主要区别在于：参与网络维护的参与者不同，安全性不同，交易处理速度也不同。每种链都有自己的优势和劣势，因此在选择区块链时，需要根据自己的需求进行选择。

1. How to classify blockchains

What are the characteristics of public chains, private chains and consortium chains? Blockchains are divided into three categories based on access mechanisms: public chains, private chains and alliance chains. Other types of blockchains may be born in the future. The public chain is open and transparent. Any individual or group in the world can send transactions on the public chain, and the transactions can be effectively confirmed by the blockchain. Everyone can compete for accounting rights. The Bitcoin blockchain is a typical representative of the public chain. The alliance chain is semi-public. It is a blockchain used within a certain group or organization. Several nodes need to be pre-designated as bookkeepers. The generation of each block is jointly decided by all pre-selected bookkeepers. Other nodes can trade, but do not have bookkeeping rights. Private chains are completely closed. Only blockchain technology is used for accounting. The accounting rights are not public, and only internal transactions are recorded, which is exclusive to the company or individual.

2. SAC official website, let’s learn about the types of blockchain

SAC official website can be said to be the authoritative organization of blockchain and artificial intelligence application systems. This organization specializes in A brand of intelligent application chain technology, the intelligent application chain system it creates has a very high reputation across the country. There are actually several types of blockchains. I believe many people are not clear about them. Let’s share them with you below. The blockchain on the SAC official website is divided into three categories, including public blockchain, industry blockchain and private blockchain. The public blockchain refers to any individual or group in the world who can send transactions. And transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. Currently, the most widely used public blockchain is the Bitcoin blockchain. The industry blockchain is composed of multiple pre-selected nodes designated within a certain group as bookkeepers. The generation of each block is jointly decided by all pre-selected nodes. Other access nodes can fully participate in transactions, but cannot interfere with bookkeeping. process, and anyone else can make limited queries through the blockchain’s open API. A private blockchain only uses the general ledger technology of the blockchain for accounting. It can be a company or an individual and has exclusive write permissions to the blockchain. This type of blockchain is not much different from other distributed storage solutions. difference. As far as these three types of blockchain are concerned, each has its own benefits. Among them, the application of public blockchain has been very extensive, while the application products of private blockchain are still in the exploratory stage. SAC official website has launched customized services. If If an enterprise or individual wants to use the intelligent application chain, they can consult and professionals will give extremely professional answers.

3. Blockchain, 4 types, how much do you know

——Hello, I am mentality, focusing on sharing my understanding of blockchain and investment thinking. hope this helps.

Based on different usage requirements and scenarios, blockchain is divided into 4 types: public chain, alliance chain, private chain and hybrid chain.

1. Public chain

Public chain refers to anyone at any node in the world.From any geographical location, you can enter the system to read data, send transactions, compete for accounting, etc. to participate in the consensus blockchain. No institution or individual can tamper with the data in it, so the public chain is completely decentralized.

Bitcoin and Ethereum are both representatives of public chains. Public chains generally encourage participants to compete for accounting (i.e. mining) by issuing tokens to ensure data security and consensus updates.

Bitcoin generates one block every 10 minutes on average, and its POW mechanism is difficult to shorten the block time. The POS mechanism can shorten the block time relatively speaking, but it is more likely to cause forks. So the transaction needs to wait for more confirmations before it is considered safe.

It is generally believed that a block in Bitcoin is secure enough after 6 confirmations, which takes about an hour. Such a confirmation speed is difficult to meet commercial-level applications. Therefore, public chains such as ETH and EOS that support more writing speeds are constantly developing.

2. Alliance chain

Alliance chain refers to a blockchain that is jointly participated and managed by several institutions, with each institution running N nodes.

The data of the alliance chain only allows different institutions in the system to read, write and trade. The PKI-based identity management system transactions or proposals are initiated through digital certificates and are verified by the joint signature of the participants. A consensus is reached, so there is no need for proof of work (POW), and there is no digital currency (token), which improves the efficiency of transaction completion and saves a lot of computing costs (computing hardware investment and electricity energy consumption).

Normally, nodes participating in the alliance chain will be divided into different read and write permissions, which can support more than 1,000 data writes per second.

3. Private chain

Unlike the public chain, which is completely decentralized, the private chain’s access rights are controlled by an organization, and the participation qualifications of each node are controlled by the organization. Authorization control.

Since the participating nodes are limited and controllable, private chains often have fast processing speeds and can support more than 1,000 data writes per second, while reducing the transaction costs of internal nodes.

Nodes can participate under real names and therefore have financial attributes to confirm identity. The value of the private chain is mainly to provide a safe, traceable, non-tamperable, and automatically executed computing platform, which can prevent both internal and external security attacks or tampering of data, which is difficult to achieve in traditional systems.

The application scenarios of private chains are generally within enterprises, such as inventory management of branches, summary statistics of data from various places, etc. It can also be used in areas that can be supervised by the public, such as government budgeting and execution. Large financial groups are also currently inclined to use private chain technology.

4. Mixed chain

When the respective advantages of public and private chains are combined, a hybrid chain will appear. The development of hybrid chains is difficult, but the prospects are broad.

In the future market, there will definitely be giant companies that develop underlying technologies and protocols. These giant companies will set up public chains, private chains or alliance chains for different purposes, based on performance and security. and the different needs of application scenarios, and then grafted on applications in different industries. For example, a communication public chain that supports high concurrency, a payment alliance chain that focuses on security, etc.

(Thanks for reading)

A like and a follow are the greatest support for me. See you tomorrow.

4. What are the technical classifications of blockchain?

1. Public chain, no official organization or management agency, no central server, participating nodes are free according to system rules Access to the network is uncontrolled, and nodes work based on a consensus mechanism. (Subversive: absolutely credible and open)
Typical case: Digital currency represents Bitcoin
2. Private chain is established within a group, and the operating rules of the system are set, modified or modified according to the requirements of the group Read permissions are subject to certain restrictions, while retaining the authenticity and partial decentralization of the blockchain. (Relatively trustworthy and public)
Typical case: R3
3. Alliance chain, jointly initiated by several institutions, is between the public chain and the private chain, and has the characteristics of partial decentralization. The read permission on the District Quick Chain may be public or partially public, that is to say, multiple pre-selected nodes are designated internally as bookkeepers, and the pre-selected people compete for the book-keeping rights, and other access nodes can participate in transactions. But don’t ask about the accounting process. (The abilities of the pre-selected candidates cannot be uneven). ?
(relatively credible and open)
Existing cases: Hyperledger
Example: ?Take loan diversion as an example, when the user jumps to the other party's webpage through our link to register, The docking party can choose to lie and say that it has not received the user's registration request. But if we put the user registration behavior on the block, if the docking party wants to receive the user registration behavior, it must pay us at the same time when receiving it.

5. What is blockchain, how was it born, and what are the types of blockchain?

If you want to understand blockchain, you must first understand the basic structure of the program. Everything we see on the Internet is constructed through computer language. There are many kinds of computer languages, but the most basic characters that make up the language are codes, and blockchain technology is a way of applying codes, which is different from traditional centralization. The difference between the models is that the blockchain has the characteristics of immutability, privacy, security, and consensus.

There are many application scenarios for blockchain. The most successful case so far is Bitcoin, followed by electronic invoices, cross-border payments, etc. Based on the interoperability of data, it is impossible to tampering and other characteristics, it can alsoIt is used to save some important data. As long as the data uses blockchain technology as the underlying technology, it can never be destroyed and will be saved forever. No person or institution has the ability to modify or delete it. In addition, there are certain intersections between blockchain payment and education, medical care, credit reporting, automobiles, transportation and other fields. It is a technology, not a certain product, so there is only one type of it, but with the application As the scene changes, its role is also different. It can be integrated with existing scenes in almost any field and then derive other applications.

6. What categories can blockchain technology be roughly divided into at present?

From the perspective of known application classifications of blockchain technology, Jinwowo Group believes that it can be roughly divided into Three major categories:
1-Public blockchain; refers to a blockchain that anyone can read, send transactions to confirm validity, and anyone can participate in its consensus process and jointly maintain public blocks The chain data is safe, transparent and cannot be tampered with. For example, Bitcoin is represented
2-Community blockchain; also known as alliance chain, it means that participating blockchain nodes are selected in advance, and there are usually good network connections and other cooperative relationships between nodes;
Community blockchain is a practical application scenario that combines blockchain with physical goods, such as Domenech Jewelry’s Ubei model
3-Private blockchain: The participating nodes have only a limited scope and data access And use has strict permission management. Write permission is only in the hands of participants, and read permission can be opened to the outside world.

7. What are the common basic types of blockchains

Common blockchain types include public chains, private chains, alliance chains, permissioned chains, hybrid chains, complex chains, etc. Some other opinions.

Public chain: The so-called public chain is a block in which anyone can read and send transactions, and the transactions can receive relevant and effective confirmation, and everyone can participate in the consensus process. Chain, the consensus process determines which blocks can be added to the blockchain, while clarifying the current state.

The public chain has the following characteristics:

1. It can protect users from the influence of developers. In the public chain, program developers have no right to interfere with users, and the blockchain can protect users.

2. The threshold for access is low. Anyone can access the public chain, and only a computer that can connect to the Internet is needed to meet the most basic access conditions.

3. All data is public by default. In the public chain, every participant can see all transaction records in the entire distributed ledger.

Other explanations: In the classification of blockchain, in addition to the ones mentioned above, there are also several other explanations: permissioned chain, hybrid chain and complex chain. .

Permissioned chain refers to a blockchain system in which each node requires special permission to join. Both private chains and consortium chains are permissioned chains. With the continuous popularization of blockchain technology, the technical architecture of blockchain is no longer just a simpleIt is divided into private chain and public chain, and the boundaries between the two are becoming increasingly blurred. Against this background, the concepts of complex chains and hybrid chains were born.

8. What are the different types of blockchains

The different types of blockchains are as follows

1. Divided by degree of openness: public chain, alliance chain , Private chain

2. Divide by application scope: basic chain, industry chain
There is a saying that currency is about consensus, and chain is about ecology.

3. Divide by original program: original chain, forked chain
This division may be more niche, and maybe there is such an understanding

Four , divided according to the degree of independence: main chain, side chain
There is another way to divide the blockchain according to whether the blockchain is independent enough.

5. Division by hierarchical relationship: parent chain, sub-chain
The last division method is also relatively niche, and let’s give a simple definition.