区块链联盟链技术要点,区块链 联盟链

近年来，随着区块链技术的发展，联盟链也成为了一个热门话题。联盟链技术是一种基于区块链的技术，它可以帮助不同的机构或组织之间建立信任关系，从而实现更安全、更高效的信息交换。本文将介绍联盟链技术的三个关键词：共识机制、隐私保护和智能合约。

共识机制是联盟链技术中最重要的一个关键词。共识机制可以帮助组织或机构之间建立信任关系，以确保数据的安全性和一致性。共识机制也可以帮助机构之间实现更有效的信息交换，以及更有效的数据处理。常用的共识机制有工作量证明（PoW）、权益证明（PoS）和拜占庭容错（BFT）等。

隐私保护也是联盟链技术的重要关键词。隐私保护可以帮助组织或机构之间实现更安全的信息交换，以保护其信息的安全性和隐私性。常用的隐私保护技术有哈希签名技术、零知识证明技术、隐私保护智能合约等。这些技术可以帮助机构之间实现更安全的信息交换，从而实现更安全、更高效的信息交换。

智能合约也是联盟链技术的重要关键词。智能合约可以帮助组织或机构之间实现更安全、更高效的信息交换。智能合约是一种基于区块链技术的自动执行协议，它可以帮助组织或机构之间实现自动化的协议执行，从而实现更安全、更高效的信息交换。智能合约可以让组织或机构之间的信息交换更加安全、可靠，从而实现更高效的信息交换。

总之，联盟链技术是一种基于区块链技术的技术，它可以帮助不同的机构或组织之间建立信任关系，从而实现更安全、更高效的信息交换。本文介绍了联盟链技术的三个关键词：共识机制、隐私保护和智能合约，它们都可以帮助机构之间实现更安全、更高效的信息交换。

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A. The technical classification of blockchain mainly includes

including public chain, alliance chain, private chain, etc. The emergence of these lead-up technology classifications is mainly to solve different usage scenarios and needs of the public chain. The public chain is relatively transparent, and the security is jointly maintained by network participants. The delay and high handling fee cost caused by its decentralization cannot be tolerated. On the other hand, consortium chains and private chains have more flexible access control and faster network speeds. Blockchain is a decentralized, digital ledger technology that is secure, transparent, and cannot be tampered with.

B. How to use alliance blockchain to protect network copyright

On February 11, the Procuratorate Daily published an article "Using Alliance Blockchain to Protect Network Copyright" stating that alliance blockchain Technology, as a blockchain technology with limited authorization management, has the characteristics of non-tampering, easy traceability, and controllability, and is suitable for fields with high requirements for privacy protection, interaction efficiency, and supervision. Based on the alliance chain technology, the author proposes to use judicial agencies and intellectual property management agencies as trusted certification agencies to build an alliance blockchain network and establish a traceable prosecution intellectual property certification service platform to protect the legitimate rights and interests of property owners and combat network infringement. Copyright crime provides a reference path. Alliance chain technology protects network copyright strategy. Blockchain technology's unique characteristics of decentralized storage, inability to tamper with data, trusted verification, and full traces can effectively solve the problems of difficulty in verification, tracing, and rights protection that exist in traditional online copyright protection.
Based on "blockchain + judicial + application", Yibaoquan has successfully built a one-stop service platform for blockchain applications by deeply cultivating the underlying technology of blockchain and expanding judicial service capabilities to provide enterprises, government agencies and individuals with The four innovative product services of "electronic data storage, electronic contracting, Internet justice, and originality protection" can effectively solve the pain points of traditional business cooperation and judicial rights protection, completely transform the traditional business model, and create a new digital business infrastructure.
Through the "blockchain + judicial + intellectual property" model, Yibaoquan has launched micro-copyright in the field of intellectual property protection, providing work rights confirmation, infringement monitoring, and infringement protection for original works such as pictures, text, music, and videos. One-stop intellectual property protection services such as analysis, network forensics, and agency rights protection make every original work worthy of protection. Each function can be sold individually or combined freely. Micro-copyright can help image platforms, photographers, designers, lawyers, writers, newspapers and other users solve the problem of protecting original works, and can issue digital copyright certificates and notarial certificates online.

C. What is blockchain technology? What exactly is blockchain?

Blockchain technology is one of the top ten typical judicial technology applications on the Internet. Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Blockchain is an important concept of Bitcoin. In fact, it is a decentralized database. Blockchain as the basis of BitcoinLayer technology is a series of data blocks generated using cryptographic methods. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next data block.

Blockchain originated from Bitcoin. On November 1, 2008, a person who called himself Satoshi Nakamoto published the article "Bitcoin: A Peer-to-Peer Electronic Cash System", which elaborated on P2P network technology, encryption technology, timestamp technology, and block technology. The concept of electronic cash system framework such as chain technology marks the birth of Bitcoin.

(3) Extended reading on blockchain alliance chain technology:

The birth of blockchain:

The concept of blockchain was first proposed by Satoshi Nakamoto in 2008. In the following years, blockchain became the core component of the electronic currency Bitcoin: a public account for all transactions. By using peer-to-peer networks and distributed timestamp servers, blockchain databases can be autonomously managed.

The blockchain invented for Bitcoin made it the first digital currency to solve the problem of repeated consumption. Bitcoin design has become a source of inspiration for other applications. On December 20, 2016, the Digital Currency Alliance-China FinTech Digital Currency Alliance and FinTech Research Institute were officially established.

D. What issues do you need to know about blockchain technology security?

I believe everyone should be familiar with blockchain technology, and today we will take a look at it together. What are the issues in the field that require our attention? Let’s start with today’s main content.

Currently, most blockchain projects carried out within enterprises are so-called "private chains with permissions". Unlike public blockchains, private blockchains can only be accessed by a selected group of users who have the authority to enter, verify, record, and exchange data on the ledger.

Of course, for an "outsider" who has never been allowed to join, such a network is almost impossible to break. But with the emergence of private chains, another question arises: In order to improve privacy and security, do we really need to abandon decentralization?

Mike Orcutt from "MIT Technology Review" wrote that a private chain system "might make its owners feel more secure, but it really just gives them more control, meaning they can make changes regardless of whether other network participants agree or not." Such systems need to come up with balancing mechanisms to grant different levels of permissions to different user groups and perform identity checks on validators to ensure they are who they claim to be.

That’s why many companies are looking for a way to have both—the decentralization of a public chain and the extra security of a private chain. The consortium chain developed by major manufacturers such as IBM, Corda, and Ripple currently seems to be a good securityFull choice. Simply put, they provide businesses with access to centralized systems that themselves have a level of cryptographic auditability and security.

Other companies are also considering how to adjust public chains to meet their security needs. For example, the Ethereum blockchain already provides mechanisms that can be used to ensure the privacy of network participants, including ring signatures, stealth addresses, and storing private data on the public chain.

In general, the blockchain field is developing steadily towards new solutions that define technology-granular privacy layers for public chains, private chains, and consortium chain networks. IT training found that companies are actively investigating and patching known vulnerabilities and adopting new mechanisms to ensure that all parties are protected and that no malicious hacker can break through and exploit vulnerabilities in the ledger.

E. How to learn blockchain technology_How to understand blockchain technology

1. Technical language

Python and Go These two languages ​​are technical languages ​​mentioned by many companies in recruitment. Need to prioritize learning. Moreover, these two languages ​​​​also have great applications in the direction of sliding technology outside of the blockchain. For example, Go is used in the background construction of large-scale concurrent systems, and Python is used in the construction of artificial intelligence systems. So learning these two languages ​​is a priority.

2. Technical framework

Master one or more of Bitcoin, ETH and Hyperledger. Needless to say, BTC is written in C at the bottom level. A large number of currency projects, such as Litecoin, Dash, Monero, zcash, etc., all use Bitcoin technology for secondary development.

ETH is the representative of blockchain 2.0, and various application Dapps can be built on the ETH network. Nowadays, a large number of application blockchain projects are developed using the ETH platform.

Hyperledgerfabric is a blockchain development platform strongly promoted by IBM. It is mainly used for the development of alliance chains and is currently the most popular alliance chain development platform.

3. Algorithm

POW (Proof of Work Algorithm), POS (Proof of Stake Algorithm), PBFT (Byzantine Fault Tolerance Algorithm), etc. are all important in the cryptography part of the blockchain Composition, a full understanding of these algorithms will help you have a better understanding of the cryptography part when participating in the underlying development of blockchain projects.

(5) Extended reading on blockchain alliance chain technology:

Blockchain technology is a distributed accounting technology, and its characteristic is decentralization , open and transparent, allowing everyone to participate in the establishment of the database, and each created data cannot be tampered with. With everyone participating, the problem of trust between strangers is solved.

Blockchain technology has emerged. It is an accounting technology that allows all people to participate. The transaction information and data between AB are made public and cannot be tampered with. Everyone knows this. hairstudent, then there is no need for any authoritative third-party C, or everyone in the system plays the role of C. This is also called decentralization.

F. What kind of blockchain does the consortium chain belong to?

The consortium chain is still essentially a private chain. The consortium chain is still essentially a private chain, but it is smaller than a single chain. The private chain developed by small organizations is larger, but not as large as the public chain. It can be understood that it is a kind of blockchain between private chain and public chain. A consortium blockchain is a blockchain whose consensus process is controlled by pre-selected nodes; for example, imagine a consortium of 15 financial institutions, each running a node and requiring each block to be valid. It has been confirmed by 10 institutions (2/3 confirmed). The blockchain may allow everyone to read it, or it may only be limited to participants, or it may take a hybrid route, such as the root hash of the block and its API (application programming interface) that are made public, and the API allows outsiders to use it. Make a limited number of queries and obtain information about the blockchain status. These blockchains can be considered “partially decentralized.” Characteristics of the alliance chain 1. Partial decentralization is different from the public chain. The alliance chain is only owned by the members within the alliance to a certain extent, and it is easy to reach a consensus because after all, the number of nodes in the alliance chain is very limited. of. 2. Strong controllability: Once the blockchain is formed, the public chain cannot be tampered with. This is mainly due to the fact that there are generally a large number of nodes in the public chain. For example, there are too many nodes in Bitcoin, and it is almost impossible to tamper with the block data. , and the alliance chain, as long as the majority of all institutions reach a consensus, the block data can be changed. 3. Data will not be made public by default. Unlike public chains, the data of the alliance chain is only accessible to institutions and users in the alliance. 4. The transaction speed is very fast. Like the private chain, the alliance chain is essentially a private chain. Therefore, due to its small number of nodes, it is easy to reach consensus and the transaction speed is naturally much faster. There are currently many alliance chain applications. The more well-known ones are: 1. R3 Blockchain Alliance. The R3 Blockchain Alliance was established in September 2015. At present, more than 40 international banking organizations have joined, and its members Almost all over the world. R3CEV is a well-known alliance chain 2. Hyperledger Hyperledger was launched by the Linux Foundation in 2015. 3. Russian Blockchain Shenqiao Chain Alliance (Russian version R3).

G. What are the basic concepts of blockchain programming and development technology

With the continuous development of the Internet, the development and application of blockchain technology has also been put on the agenda. Today Let’s take a java course to learn about the basic concepts that need to be mastered in blockchain programming and development technology.

1. Blockchain technology

Chain data structure, the head of each block stores the link to The hash value of the previous node is connected in sequence.

Based on the P2P network, the distributed node consensus algorithm maintains and updates data to ensure that the data is "non-tamperable".

Use cryptography principles to ensure the security of data transmission and access.

Automated scripts (smart contracts) to program and manipulate data.

Essentially it is a decentralized database, and what it ultimately wants to solve is the trust issue in Internet transmission.

2. Decentralization

The entire network is jointly participated and maintained by each node, and does not rely on central processing nodes , each node is a center.

Data storage and update are distributed and do not require intermediary or trust structure endorsement.

3. Private chain, public chain and alliance chain

Private chain:

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The qualifications for participating nodes are limited and controllable, and reading and writing are limited.

Weak centralization corrects the problem of trust among "teammates" (within the organization).

Public chain:

Open, anyone can read the data on the chain and participate in transactions.

Completely decentralized, the data on the chain cannot be tampered with by any person or institution.

Encourage participants to compete for accounting rights through the mechanism of rewarding positive and negative coins.

Solve the problem of "human beings" (all people) being untrustworthy.

Consortium chain:

It is jointly participated, maintained and managed by multiple institutions. The data on the chain is only allowed within the system. Institutions read, write, and trade.

Partially decentralized, each institution runs one or more nodes.

Solve the problem of "organizational" (inter-agency) distrust.