类似区块链的歌曲有哪些,类似区块链的软件

❶ Jay Chou released 5 collected DEMOs. Why did he want to develop in the field of "music digital collections"

Jay Chou released 5 collected DEMOs. Why did he want to develop in the field of "music digital collections"? The development of the field of "collections" has a lot to do with Jay Chou's character. Jay Chou himself is a person who likes to try new things. As a new thing, music digital collections are something that Jay Chou definitely wants to try. Secondly, this can be regarded as Zhou's development. A benefit given by Dong to his fans.

Jay Chou released 5 collection DEMOs. Do you know why he wants to explore the field of "music digital collections"? Welcome to leave a message for discussion.

❷ Who is the spokesperson for the "Chinese aunt" who plays in the blockchain?

In the morning of April 25, Bitcoin rose by more than 700 US dollars or 7% in 24 hours, refreshing 3 The highest level since March 12 was $9,580. Analysts pointed out that the entry of groups such as Chinese "aunts" may also have a certain impact on the recent rise in Bitcoin prices. Judging from recent blockchain-related conferences, the number of participants, who were mainly born in the 1990s, has been clearly felt by the number of "aunts" and "uncles".

Second, the investment market is not very healthy. At the end of 2017, my country's elderly population over 60 years old exceeded 240 million, accounting for 17.3% of the total population. The "Healthy China 2030" Planning Outline shows that in 2015, my country's average life expectancy reached 76.34 years, will reach 77.3 years in 2020, and will reach 79.0 years in 2030. China is still rapidly aging on the road, and there are more and more wealthy elderly people. With the strengthening of financial supervision, P2P and other projects cannot be bought, and the stock market and real estate are not easy to speculate. Money is being poured into phantom new technologies such as blockchain. field, it’s just a matter of time. If you don’t buy health care products and don’t play with blockchain, is there a better outlet for a large amount of idle funds?

Don’t demonize “Chinese aunts”, they are just shadows of this era. No matter how stupid you are when you play with the blockchain, it is still much better than a Ponzi scheme or a pyramid scheme. And what we need to reflect on is: after the teasing is over, what else can you do if you ask them to take the money?

Content comes from NetEase News

❸ What is blockchain

Blockchain is distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. New application models of computer technology. Blockchain is an important concept of Bitcoin.

It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each data block contains a batch of The information of Bitcoin network transactions is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

(3) Extended reading of songs similar to blockchain

Characteristics of blockchain:

1. Deposit certificate< /p>

Blockchain “cannotThe characteristics of "tampering" provide a solution to the "evidence" problem in economic and social development. As long as the authenticity of the on-chain information and data can be ensured, then the blockchain can solve the "existence" and "evidence" problems of information. .

For example, in the field of copyright, blockchain can be used to store electronic evidence, which can ensure that it is not tampered with, and can link original platforms, copyright bureaus, judicial agencies and other parties through distributed ledgers. Greatly improve the efficiency of handling infringements.

2. Sharing

The "distributed" characteristics of the blockchain can break through the "data barriers" between departments and realize information and data sharing . Different from centralized data storage, the information on the blockchain will be distributed to each node through point-to-point broadcasting, and all information can be "truthfully recorded" through "whole network witness".

❹ What is blockchain

[Definition]

Blockchain refers to a technical solution that collectively maintains a reliable database through decentralization and trustlessness. The The technical solution allows any number of nodes participating in the system to calculate and record all information exchange data in the system over a period of time into a data block (block) through cryptographic algorithms, and generate the fingerprint of the data block for chain ) next data block and verification, all participating nodes in the system jointly determine whether the record is true.

Blockchain is a collective name for technical solutions similar to NoSQL (non-relational database) , is not a specific technology, but can implement blockchain technology through many programming languages ​​and architectures. And there are many ways to implement blockchain, currently common ones include POW (Proof of Work, proof of work), POS ( Proof of Stake, Proof of Stake), DPOS (Delegate Proof of Stake, Share Authorization Proof Mechanism), etc.

The concept of blockchain was first published in the paper "Bitcoin: A Peer-to-Peer Electronic Cash System" ( "Bitcoin: A Peer-to-Peer Electronic Cash System", it is proposed that the author is an individual (or group) who calls himself Satoshi Nakamoto. Therefore, Bitcoin can be regarded as the first blockchain in the field of financial payments. Application in.

[Popular explanation]

No matter how big the system or how small the website, there is usually a database behind it. So who will maintain this database? Under normal circumstances, whoever is responsible for operating the network or system will maintain it. If it is a WeChat database, it must be maintained by the Tencent team, and Taobao's database must be maintained by the Alibaba team. Everyone must think that this approach is natural.Yes, but this is not the case with blockchain technology.

If we imagine the database as a ledger: Alipay, for example, is a typical ledger, and any change in data is an accounting type. We can think of database maintenance as a very simple accounting method. The same is true in the world of blockchain. Everyone in the blockchain system has the opportunity to participate in accounting. The system will select within a period of time, maybe within ten seconds, or maybe ten minutes, to select the person with the fastest and best accounting during this period. This person will do the accounting, and he will combine the changes in the database during this period with Changes in the ledger are recorded in a block. We can imagine this block as a page of paper. After confirming that the record is correct, the system will link (chain) the data fingerprint of the past ledger to this paper, and then This piece of paper is sent to everyone else in the entire system. Then the cycle starts over and the system looks for the next person who can do the accounting quickly and well, and everyone else in the system gets a copy of the entire ledger. This means that everyone in this system has exactly the same ledger. This technology is called blockchain technology, also known as distributed ledger technology.

Since everyone (computer) has exactly the same ledger, and everyone (computer) has exactly the same rights, there will be no problem due to a single person (computer) losing contact or going down. The entire system collapses. Since there are exactly the same ledgers, it means that all data is open and transparent, and everyone can see the digital changes in each account. Its very interesting feature is that the data in it cannot be tampered with. Because the system will automatically compare, it will consider the account books with the largest number of the same number as the real account books, and the small number of account books with different numbers as others are false account books. In this case, it makes no sense for anyone to tamper with their own ledger, because unless you can tamper with most of the nodes in the entire system. If the entire system has only five or ten nodes, it may be easy to do, but if there are tens of thousands or even hundreds of thousands of nodes, and they are distributed in any corner of the Internet, unless someone can control most of the computers in the world , otherwise it would be unlikely to tamper with such a large blockchain.

[Elements]

Combined with the definition of blockchain, we believe that it must have the following four elements to be called a public blockchain technology. If it only has the first three points elements, which we will consider as private blockchain technology (private chain).

1. Point-to-point peer-to-peer network (peer-to-peer power, physical point-to-point connection)

2. Verifiable data structure (verifiable PKC system, non-tamperable database)

3. Distributed consensus mechanism (solve the Byzantine generals problem and double payment)

4. Nash equilibrium game design (cooperation is an evolutionarily stable strategy)

[Features]

Combined with the definition of blockchain, Blockchain will realize four main characteristics: decentralized, trustless, collectively maintained, and reliable database. And the four characteristics will lead to two other characteristics: open source (Open Source) and privacy protection (Anonymity). If a system does not possess these characteristics, it will not be considered an application based on blockchain technology.

Decentralized: The entire network has no centralized hardware or management organization. The rights and obligations between any nodes are equal, and the damage or loss of any node will not affect it. operation of the entire system. Therefore, the blockchain system can also be considered to have excellent robustness.

Trustless: Each node participating in the entire system does not need to trust each other for data exchange. The operating rules of the entire system are open and transparent, and all data contents are also public. , therefore within the rule range and time range specified by the system, nodes cannot and cannot deceive other nodes.

Collectively maintain: The data blocks in the system are jointly maintained by all nodes with maintenance functions in the entire system, and these nodes with maintenance functions can be participated by anyone.

Reliable Database: The entire system will be divided into databases so that each participating node can obtain a copy of the complete database. Unless more than 51% of the nodes in the entire system can be controlled at the same time, modifications to the database on a single node are invalid and cannot affect the data content on other nodes. Therefore, the more nodes and stronger computing power participating in the system, the higher the data security in the system.

Open Source: Since the operating rules of the entire system must be open and transparent, for the program, the entire system must be open source.

Privacy protection (Anonymity): Since nodes do not need to trust each other, there is no need to disclose their identities between nodes. The privacy of each participating node in the system is protected. protected.