Resume of blockchain

1.

blockchain is an important concept of bitcoin. It is essentially a disintermediated database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains the information of a bitcoin network transaction, which is used to verify the effectiveness of its information (anti-counterfeiting) and generate the next block

blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies

in a narrow sense, blockchain is a kind of chain data structure that combines data blocks in a sequential way according to the time sequence, and it can not be tampered with and forged by cryptography

broadly speaking, blockchain technology uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, and uses cryptography to ensure the security of data transmission and access It is a new distributed infrastructure and computing method to program and operate data by using intelligent contract composed of automated script code

extended data:

the evolution mode of blockchain is as follows:

& 9642; Blockchain 1.0 - digital currency

▪ Blockchain 2.0 - digital assets and smart contracts

▪ Blockchain 3.0 - Implementation of distributed applications in various instries

blockchain features:

1. Disintermediation. Due to the use of Distributed Accounting and storage, there is no centralized hardware or management organization in the system, the rights and obligations of any node are equal, and the data blocks in the system are jointly maintained by the nodes with maintenance function in the whole system

2. Openness. The system is open. In addition to the private information of all parties to the transaction is encrypted, the data of the blockchain is open to all. Anyone can query the blockchain data and develop related applications through the open interface, so the information of the whole system 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 whole system to exchange data freely and safely in a de trusted environment, so that the trust in "people" is changed into the trust in machines, and any human intervention does not work

The information can not 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. Therefore, the data stability and reliability of the blockchain are extremely high

5. Anonymity. Because the exchange between nodes follows a fixed algorithm, the data interaction does not need to be trusted (the program rules in the blockchain will judge whether the activity is effective). Therefore, the counterparties do not need to make the other party trust themselves by disclosing their identities, which is very helpful for the accumulation of credit

2. Blockchain is a technology, but it is not a single technology, but the result of the integration of a variety of technologies, including cryptography, mathematics, economics, network science and so on. You can think of it as a distributed shared accounting technology, or as a database, but the database is jointly maintained by all nodes in the chain, and each node has an account book. Because the account books of all nodes are consistent, different nodes can trust each other, and there is no doubt about the data, so we all say that the blockchain has realized trust technically. For detailed professional technology, you can consult some professional technology companies, such as Jinbo technology, which focuses on the development of blockchain related procts, professional R & D team and perfect after-sales service, and you can consult by telephone.

3. The resume is very rich. Let's pick the main one. He is a doctor of economics, former vice president of Bank of China and President of LETV finance. The blockchain technology he said is actually used to help solve a series of bottleneck problems such as online authentication.

4. There are many platforms for job intention, such as 58 city, ganji.com, zhaopin.com, Zhonghua yingcai.com, etc

5. Generally, the scope of entrepreneurship is limited to business and trade, a small number of them are engaged in instry, and they are basically small-scale processing instry. Of course, there are also large and medium-sized enterprises that have grown up because of opportunities, but the number is very small, because the domestic market is not like that of more than 20 years ago, such as Liu Yonghao brothers, Lu Guanqiu and Nan Cunhui. In their entrepreneurial era, the economy was short, the mechanism was chaotic, and opportunities were everywhere. Nowadays, as the saying goes, there are more wolves and less meat. It's unrealistic to just rely on opportunities to achieve great achievements.

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7. Big data, artificial intelligence (AI) and blockchain are hot topics at present. These emerging technologies will change our future life all the time. So, for HR practitioners, what impact will these emerging technologies have on HR
big data
big data refers to the data set that can not be captured, managed and processed by conventional software tools within a certain period of time. It is a massive, high growth rate and diversified information asset that needs new processing mode to have stronger decision-making power, insight and process optimization ability
in the past, when recruiting personnel, it was first to establish a competency model based on theory. This model is based on certain experience, logic and hypothesis, and does not test whether it is really correct and effective in practice, but pays more attention to the logical inference before and after. However, the core of big data is to speculate what may happen in the future through massive data, rather than establishing causality. It comes from the summary of past practice. Google can be said to be the pioneer of employing big data technology. Google first let all employees complete a questionnaire with hundreds of questions, and then use big data analysis to get a set of mathematical model, so as to find the right talents according to the mathematical model. In this way, Google will not only judge the ability of job seekers based on their diplomas and grades, but also find those job seekers with great potential who are not good at school and grades

at present, big data is used in HR, mainly to digitize the behavior characteristics of the company's existing personnel, and to establish the competency model through big data and algorithms. The difficulty of application lies in how to conct data and how to establish mathematical model<
artificial intelligence, abbreviated as AI, is to study the law of human intelligence activities, construct artificial systems with certain intelligence, and study how to make the computer complete the work that needs human intelligence in the past, that is, to study the basic theory of how to use computer software and hardware to simulate some human intelligent behaviors Methods and techniques. For example, our common intelligent search is a kind of AI application
predictive algorithms and machine learning, as a tool to identify the best candidates, are emerging rapidly, and many AI + recruitment companies are emerging. By using AI to quickly evaluate the personal quality of job seekers, through the investigation of language preference, micro action, psychological emotion and social media language, the conclusion is drawn. You can also use AI tools to filter resumes and search in the database to save recruiters' time and sell jobs to qualified candidates automatically. AI recruitment software can be used in the early stage of recruitment to narrow the range of candidates. In the late stage of recruitment, employers often choose face-to-face communication and artificial judgment. This software improves the efficiency of recruitment and reces the bias of screening

at present, the application of AI in HR is mainly in the external recruitment software services, and the internal establishment of recruitment based on AI costs a lot
blockchain
blockchain is an encrypted general ledger of digital records, which are organized into a group of data, called "blocks", and distributed on a network. These blocks are located on the server and are called "nodes" that are chained together. Whenever a new transaction occurs, the blockchain will be authenticated on the network. Therefore, the authentication of each node is required to add the block to the chain. Blockchain creates trust because a of the chain showing each transaction is held by the entire network. It's a way to distribute data, only with the people you want to share it with, and the data can only be modified or deleted by its owner. It's encrypted, and it's almost impossible to change unless you're the validation owner of the data

the immutability and openness of information in blockchain make this data storage method very reliable. In the past, we need to spend a lot of time to verify the authenticity of ecation certificates, the effectiveness of skills, and even need to verify the relevant information through external background investigation agencies. Similarly, job seekers are reluctant to disclose personal information for fear of disclosure. Blockchain technology can help recruiters verify candidates' certificates in a highly secure way, rece the possibility of certificate being changed or forged, and effectively protect job seekers' information. In this way, we will rece the time of information verification and improve the efficiency of recruitment
at present, the application of blockchain is only a creation and conception. It requires a large number of people and organizations to participate in it. Only in this way can it be applied in the field of HR in the future.