Why is blockchain a distributed system
in the future, jinwowo network technology will continue to tap the value of blockchain technology in the commercial field, give full play to the advantages of big data services, add value to user behavior, break the ice for the development of small and medium-sized enterprises, and build a real, efficient, safe and honest Internet community of destiny.
blockchain is a digital account book that can be jointly bookkept, and will record all transactions that have occurred and have been unanimously recognized by the system it's the same as the whole family. You're bookkeeping, and your father and mother are also bookkeeping. They can see the general ledger, but the saved information can't be tampered with any more
In 2008, Nakamoto first proposed the concept of blockchain subsequently, blockchain has become the core component of electronic currency bitcoin, which serves as the public account book for all transactions. By using peer-to-peer network and distributed timestamp server, the blockchain database can be managed independentlyextended data:
type of blockchain
1, public blockchain
any indivial or group in the world can send transactions, and transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. Public blockchain is the earliest and the most widely used blockchain. The virtual digital currencies of bitcoin series are all based on public blockchain. There is only one blockchain corresponding to this currency in the world
2, Alliance (instry) blockchain
instry blockchain: multiple preselected nodes are designated as bookkeepers within a group, and the generation of each block is jointly determined by all preselected nodes (preselected nodes participate in the consensus process), and other access nodes can participate in the transaction, However, regardless of the bookkeeping process (in essence, it is still managed bookkeeping, only distributed bookkeeping, how many preselected nodes, and how to determine the bookkeeper of each block to become the main risk point of the blockchain), anyone else can conct limited query through the open API of the blockchain
3, private blockchain
only uses the general ledger technology of blockchain for bookkeeping. It can be a company or an indivial, and enjoys the write permission of the blockchain. This blockchain is not very different from other distributed storage schemes
the blockchain system uses the distributed consensus algorithm to generate and update data, which eliminates the possibility of illegal tampering with data from the technical level, thus replacing the third-party intermediary institutions in traditional applications to ensure trust and transaction security, and recing the time cost, human cost and resource consumption caused by maintaining credit.
distributed structure means that the blockchain system adopts open source and decentralized protocol to ensure complete data recording and storage
each transaction information in the blockchain is sent to all nodes in the whole network by the current node. Therefore, the information interceptor cannot successfully intercept the information through a certain information propagation path, because each node receives the information.
Internet plus is an outdated word. Who is still talking about this word? p>
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the half hanging teacher in Colleges and universities, who couldn't find a good job in those years, was reluctant to bear hardships and went to the school to be a teacher, and then gave all kinds of advice, which is called "mistaking the children". What kind of entrepreneurship competition is also a laughing matter. All kinds of old ideas are on the table. They have no experience in social work. How can they talk about entrepreneurship? Of course, colleges and universities also have strong teachers, or academic strong, they will not talk about entrepreneurship with you. Either I have worked outside for a long time, worked as a leader, and become a teacher; Another is to realize financial freedom early. What the three groups do not do is Internet plus, because the word is out of date. p>
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ZF officials declined to comment
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Why do I say this word is out of date? Go and see what is the hot field of venture capital, that is, the so-called tuyere
1, AI, has been fried for many years. This year,
2 is specially
2 and share the economy. Now it is in the red sea state. It can be regarded as the Internet Plus +
3, block chain technology
4, lithium battery and new energy vehicle, and is beginning to mature. p>
5. Fintech, Alibaba has long said that it is not engaged in Internet finance, but copied a foreign word, called financial technology company
the level of judges in the entrepreneurship competition is too low. Even if college students win the championship in the competition, they are in the wrong direction
if you want to start a business competition, you have to invite angel investors, PE, VC, at least those who have been in these companies, or else you are going to have a family
by storing information blocks among nodes in the blockchain network, the failure of a system will not make the blockchain bankrupt. When the computer or system fails, other systems will act as backup and keep running, independent of the system that is down. Once all active nodes receive and confirm that the transaction is valid, the block (transaction) will be added to the chain (general ledger) for public access. Even if one or two nodes exit the network, all nodes can still maintain the ability of normal operation, which can ensure that users continuously record and confirm their transactions in an uninterrupted and timely manner<
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.