Decentralized Oracle

1. Absrtact: blockchain technology is the underlying technology of bitcoin. Without any centralized organization operation and management, bitcoin has been running very stably for many years (perfectly for seven years), and there has been no problem (no missing account). Therefore, some people have noticed its underlying technology and abstracted bitcoin technology, which is called blockchain technology, Or distributed ledger technology
what is centralization

the so-called centralization means "ownership" or ownership by the company. For example, Tencent's q-coin, which is issued by Tencent, is a kind of centralized electronic currency, including the total amount and the issuing method, is supervised and controlled by Tencent. You can use it, trade and go shopping, but you always have to operate in the framework of Tencent, and the final right of interpretation belongs to Tencent

the issuing mode of bitcoin is preset by the program and encryption algorithm, and runs on multiple nodes all over the world. No one or organization can modify it (everyone has his own account book, so it is impossible for one person to control everyone's account book at the same time. If there is such a technology, why should it be so complicated, If you want to blackmail money into your account, you will be the richest man in the world. There is no one left, And it is not controlled by any single person or organization
take an example: for example, Lao Zhang borrows 100 yuan from Lao Li, but Lao Li is afraid that he will default, so he asks the village head to do notarization and write down the account. This is called centralization. But if you don't find the village head, you can use the loudspeaker to shout in the village: "I Lao Li lent Lao Zhang 100 yuan! Please put it in the account book. "We all put this account in our own account book. This is called decentralization
anyone who transfers money between them will release information through loudspeakers. After receiving the information, everyone will record the transaction in their own account book. With distributed ledgers, it doesn't matter if Lao Zhang or Lao Li's ledgers are lost, because Lao Zhao, Lao Ma, Lao Wang and other families have ledgers

the main advantages of blockchain are that it does not need intermediary participation, the whole process is open and transparent, and the cost is low, and the data security is high

at present, blockchain is in a stage where everyone talks about blockchain, but can't perceive its actual technical charm. Since 2017, it has graally come into our sight, and we have graally realized that bitcoin is more fierce than real estate speculation (the price of mining machinery has skyrocketed! The news is on the screen But I still don't know

so, in which fields can blockchain be applied, what kind of changes will it bring to our future life

the core key: everyone has an account book, everyone has an account book, and the information recorded in each person's account book is consistent and synchronous, and the information is completely transparent. If it is fake, it will be the public enemy of the whole people, which greatly increases the cost of data fraud

core key 2: decentralization, which does not need a central system to manage data, prevents some people from changing data and damages the interests of the majority of people

Application:

1. Account security and privacy protection: currency transfer, exchange, payment system. Blockchain can help prevent data manipulation and fraud, prevent distributed denial of service attacks (DDoS), and effectively protect users' network privacy. Key words: anti counterfeiting, anti-counterfeiting, loan payment

2. Copyright regulation and interest disputes: for example, when a song is downloaded, from the author to the procer and then to the singer, they can get payment in real time through the blockchain, without having to wait for a long time like the traditional way, or even get no reward e to right disputes. Instead of waiting for publishers to provide royalty checks, creators can freely control the process from publishing to payment through blockchain application. Key words: real time receipt, no property dispute

3. Internet of things + artificial intelligence: the intelligent devices in the Internet of things based on the blockchain will be used to monitor the real-time situation of urban infrastructure such as bridges, roads, power grids, etc. the blockchain can connect these intelligent devices together for unified management to help them monitor more efficiently. This will help people better understand how to build a smart city in the future. Key words: unified monitoring, intelligent city

4: proof of existence: in life, once you are asked to prove that you are you, that your mother is your mother, that you have never been married, that the house belongs to you, and so on, things seem very simple. Once it falls on you, it is a great trouble. The application of blockchain technology can perfectly solve the above embarrassment. At that time, all the information that belongs to you will be recorded accurately and can not be tampered with. No one has the right to change it. When the technology develops to a certain stage, birth certificate and marriage certificate may be recorded on the blockchain. Keywords: no keywords

in addition to the application scenarios mentioned above, blockchain technology can also be applied to e-commerce, data storage, logistics and other fields. As long as we grasp the characteristics of blockchain technology, it will become easy to understand.

2. One of the three conditions for large-scale implementation of blockchain applications is blockchain 3.0 technology, which can improve the performance, ease of use, operability and scalability of blockchain, and involves new technologies such as side chain, sub chain, cross chain, layering, fragmentation and zoning. According to Xiao Feng's observation, most of these technologies will mature in 2019, and the main network will go online. The launch of these new technologies is the premise of large-scale commercial application of blockchain. So from a technical point of view, after 2019, the large-scale commercial application of blockchain can be expected
the second is that only mature technology is not enough. In order to realize a large number of DAPP and commercial applications on the blockchain, we must be prepared on one hand: that is, the digital currency that can be used as payment tool, exchange medium, value measure and value storage. Xiao Feng said that everyone thinks that bitcoin is a payment system, but the real bitcoin can not meet our demand for payment because its currency value fluctuates too much
for example, he said that a mall sold a bottle of water and accepted bitcoin payment. When he got up the next morning, he found that 20% of the value was gone. So it can't be accepted. After the Japanese parliament made it clear that bitcoin could be used as a payment tool, some Japanese businesses announced that they would accept bitcoin payment. But later found that it caused a lot of trouble for the stability of the company's balance sheet. Your balance sheet is unstable, up or down. This not only affects the value of the things sold, but also affects the credit evaluation of enterprises and the services provided by banks to companies
the third condition is the construction of laws and regulations and supervision system. The digital economy on the blockchain must obtain legal protection and comply with the law. Xiao Feng stressed that there can be no decentralization in this regard
the differences between blockchain and Internet are discussed. He believes that the core difference between the two is that the Internet is a centralized trust mechanism, while the blockchain is a decentralized trust mechanism, and there is no need to trust a third party
the second core difference between the Internet and blockchain is the incentive mechanism, not the digital currency or the ability to issue currency. Economics has been discussing incentive incompatibility. Under the company system and on the Internet, the incompatibility of incentive mechanism has not been solved. However, in the decentralized blockchain, the blockchain achieves complete incentive compatibility. Without shareholders, board of directors and employees, the conflicts of interest between these roles will not happen again.

3. The main incement of financial ecological theory is the deterioration of financial ecological environment and the imbalance of financial ecological system. If this state is not changed decisively, it will threaten the stability of the financial instry and cause huge losses to economic development
performance
there are still some problems and deficiencies in the theory and practice of financial ecology, mainly as follows:
① the concept and connotation of financial ecology are not well understood. The concept of financial ecology lost the direction of financial ecology theory and the accuracy of financial ecology practice, which made the macro sector unable to start and the micro sector at a loss< (2) the basic principles of financial ecology are unclear. Many people use financial ecology, financial environment, financial mechanism and financial laws in combination, which leads to unclear objectives and channels of financial ecology, and it is easy to become a hodgepodge
③ the working mechanism and mode of protecting the financial ecology are unclear, and there is no standard for evaluating the state of the financial ecology, which makes the basis for specific research and investigation unclear< (4) e to the lack of knowledge and understanding of the scientific and forward-looking nature of financial ecology, many people do not know enough about the significance of the theory and practice of financial ecology, and some even think it is a kind of hype and catching up with the trend. This paper analyzes these four aspects in order to promote the development and unification of financial ecological theory
research
financial ecology is a bionic concept, and it is difficult to find similar terms in economic dictionaries. In China, Dr. Zhou Xiaochuan (2004) first extended the concept of ecology to the field of finance, and emphasized the use of ecological methods to study financial development. Shanghai Securities News exclusively launched the core content of the general report "China's urban financial ecological environment assessment" - the analysis framework of urban financial ecology
generally speaking, ecological environment is mainly a biological concept, which refers to the whole composed of various ecosystems composed of biological communities and abiotic natural factors, and has indirect, potential and long-term impact on human survival and development
according to this expression, the ecology of general things includes the sum of various relationships within and between systems, and is a dynamic and systematic organic chain. If we regard finance as a subsystem of social economic system, then financial ecology is an ecological chain composed of financial subsystem and other related systems, which is closely related to the sustainable development of financial instry
just as the survival and development of any creature in nature are determined by its own conditions and external environment, financial institutions, as a member of the social and economic system, on the one hand, the realization of its survival and sustainable development depends on its own system construction and management level

4. There is a certain correlation between the indicator light and the normal operation of the mining machine, but the indicator light can not indicate the normal operation of the mining machine. It may be a parameter setting error. It is suggested that you ask the relevant technical personnel of the ore pool. There is now the use of graphics card mining income is very low, may have exceeded the currency price. Of course, your electricity bill is free, so it doesn't matter.

5. Seedlings, then, according to the size of each plant 0.8-20 pieces of ocean, dry (commercial medicinal materials), 420 / kg!

6. Polkadot is the representative of the existing cross chain technology, which pays more attention to the cross chain infrastructure; The emerging fusion emphasizes the realization of asset smart contract, while ether universe emphasizes high-performance, decentralized cross chain infrastructure, and access to a variety of cross chain applications, focusing on commercial landing.

7. Bitcoin is a consensus network, contributing to a new payment system and a fully digital currency. It is the first decentralized peer-to-peer payment network, which is controlled by its users without a central management organization or middleman. From the user's point of view, bitcoin is much like Internet cash. Bitcoin can also be regarded as the most outstanding three style bookkeeping system
in addition to bitcoin, there are also famous digital currencies such as Ethereum, Puyin, lightcoin and Ethereum classic.