The oracle of Ethereum

1. For a few cents, Ethereum is not an organization, but an underlying system that can implement smart contracts and open source on the blockchain. In just three and a half years from its birth to may 2017, Ethereum has created more than 200 Ethereum applications around the world
Ethereum is a platform and a programming language, which enables developers to build and release the next generation of distributed applications
Ethereum can be used to program, distribute, guarantee and trade anything: voting, domain names, financial exchanges, crowdfunding, corporate management,
contracts and most of the agreements, intellectual property, and smart assets that benefit from hardware integration. At present, if you want to invest in Ethereum, you can trade in the bitnet exchange.

2. Whether a currency is counterfeit depends on whether it meets the basic characteristics of blockchain. Blockchain is divided into public chain and private chain. The public chain is a block chain based on the principle of decentralized open consensus, which has two characteristics: 1. Decentralized, single point can not be controlled; 2; 2. Open, all people or institutions can participate in any part of the blockchain ecology; Private chain or alliance chain is a local decentralized and non open block chain based on internal or self trust. It has two characteristics: 1. Local decentralization. For example, several banks run one node and have equal computing power; 2. In closed operation, only officially designated participants can participate in the core work of blockchain operation, and even block queries are limited or not open to the outside world at all; Ethereum started as a community project and is still on the road of decentralization. However, Ethereum chooses to become more and more decentralized and public chain like bitcoin. At present, Qube is the largest trading platform of Ethereum in China, followed by oke, and the trading volume of bitmex abroad is not small. Its recognition is second only to BTC.

3. Ethereum is an open source public blockchain platform with smart contract function, which provides decentralized Ethernet virtual machine to process point-to-point contract through its special cryptocurrency Ethereum. If you need to, you can contact Shengshi Huacai. They do it very well

4. Eth is a kind of digital token of Ethereum. Like other digital currencies, ETH can be bought and sold on the trading platform. However, e to the recent instability of the currency price, so now few people fry the currency
but it's not necessarily the only way to get eth, which can also be obtained by mining. Hayu miners can quickly get Ethereum, so you can quickly understand what Ethereum is!

5.

The extension of the chain of etc was unexpected by the Ethereum community at that time. When 90% of the computing power was switched to the new chain eth, Ethereum classic with 10% of the computing power appeared in the Ethereum community. This 10% of the computing power is still reported in the short chain, until P network suddenly launched a digital asset called etc, and the token of Ethereum classic was officially born. At that time, the online P network of etc once caused the threat of replay attack. It was predicted that if etc could not solve this problem, etc, a short chain abandoned by most Ethereum communities, would not last. However, etc is still running today< a better digital currency trading platform "currency exchange"

compared with eth, led by vitalik, a computer genius and blockchain star, etc's development team is too quiet. In today's blockchain field, Ethereum has become the second largest cryptocurrency after bitcoin in terms of market value. At the same time, community members are all over the world. According to statistics, among the 100 blockchain projects, 94 are based on Ethereum platform. Such brilliant achievements, in addition to Ethereum development team's superb technology, of course, there is no lack of fierce marketing. Compared with other teams, God V's blessing is originally a big IP, although Ethereum has grown into the second largest cryptocurrency. Today's V God will still hold meetings all over the world, marketing itself as well as eth

on the other hand, etc has been lukewarm for many years. With the continuous development of the blockchain instry, etc, as an old currency, is about to be submerged in the long history. Is it true that, as the instry says, etc and dogcoin are guerrillas? Looking back on the development history of etc in recent years, in 2016, Ethereum classic (etc) was born in the Dao event, which was maintained by a new development team. P network is the first online exchange of etc. with the addition of more and more computing power, the trading volume of etc has graally increased

6.

Link

< H2 > 1. Introction

link is the erc20 standardized token based on Ethereum blockchain, which is used to pay the chainlink node operators, so as to retrieve data from the data of the chain off, format the data into the readable format of the blockchain, calculate the chain off and ensure the normal running time. Chainlink token, as a part of the running node, can prevent undesirable participants

< H2 > 2. Project introction

the first distributed Oracle network, which allows anyone to safely provide smart contracts, access key external data, offline payment and any other API functions. Any user with a data feed, offline service (such as local payment) or any other API can directly provide it to a smart contract in exchange for a link token. Chainlink network is a distributed network of chainlink nodes, which directly transport specific data, API and various offline payment functions to smart contracts. Chainlink network is composed of two independent parts, on chain and off chain, which must interact to provide services. The network is built in such a way that it can be upgraded, so that it can replace its different components when better technologies and technologies emerge. The chain components of the network filter Oracle through service level agreement (SLA) based on the measurement of one party's request of smart contract. Using these metrics, chainlink collects responses to SLA queries, sorts them using reputation and aggregation models, and provides final set results of chainlink queries that may be implemented in smart contracts. The out of chain components of the network are composed of Oracle nodes connected to the Ethereum network, which independently collect responses to offline requests. These off link nodes can be located in any instry. For example, the off link nodes operated by the New York stock exchange can provide real-time and accurate transaction information for the chainlink network, or the off link nodes of the visa network can solve transactions and interact with consumers and suppliers through the chainlink network. Chainlink technology aims to integrate nodes from all these instries into a common network, which itself acts as a (low-cost) middleman, interpreting and allocating data correctly as needed. The chainlink system will ensure that the results obtained from the Oracle are accurate and allow the oracle to remain independent of the data they provide. Any data, payment, e-signature or other API providers and personal developers can easily join the chainlink network by connecting their familiar API to the network. Once the API is connected to the chainlink, the user becomes the chainlink node operator and is responsible for connecting the API to the chainlink network. In order to motivate operators to provide API information, they are compensated in the link token to successfully complete the online link request. The project currently provides a fully distributed Oracle network compatible with bitcoin, Ethereum and hyperledger. It is expected that other blockchains will be supported in the future, which will allow cross chain connections between smart contracts and any other public or private chains, and allow anyone in the world to use the chainlink network, regardless of its platform. All service providers will be able to securely provide smart contracts to access critical external data and possibly even non chained payments

< H2 > 3. Comment

chainlink (link) is a decentralized network, which can provide information (Oracle) for smart contracts. Chainlink was established by Sergey Nazarov and Steve Ellis in 2017, aiming to solve the problem of information procurement under the chain through smart contract for its execution parameters. Smart contract is designed to execute automatically when some parameters are satisfied. However, when these parameters exist under the chain, it depends on the information source (called Oracle) to provide the necessary information. Off chain predictors are often centralized and rely on third parties to provide critical information in a reliable and time-consuming manner. Chainlink aims to break this dependence by providing information to smart contracts through a decentralized prediction network. These predictions work together on the link blockchain to verify and forward key information to these contracts. Chainlink network allows users with data feeds or information hosting APIs to easily provide information to smart contracts in exchange for link tokens< memorabilia September 2017 - chainlink ICO. November 2018 - acquisition of town crier (smart contract and data privacy project). June 13, 2019 - announced cooperation with Google utility link network to provide timely and accurate information to smart contracts through Oracle's distributed network (data sources and APIs). This information is very important for the effective and accurate execution of smart contracts, because the required information exists under the chain, and there must be a reliable way to obtain the information on the chain. The link token is used as payment for smart contracts that use the data provided by the link network, in which the oracle that provides accurate information will be rewarded in proportion to the link< important functions partnership with major instry players such as swift and Google, integration of Ethereum side chain, such as harmony, celer and matic. Average block time n / A; The total supply is 1 billion link; Write Oracle consensus to Ethereum blockchain through threshold signature

related links: https://chain.link/

https://en.bitcoinwiki.org/wiki/ChainLink

https://everipedia.org/wiki/lang_ en/chainlink-cryptocurrency

https://blog.chain.link/threshold-signatures-in-chainlink/

https://blockonomi.com/chainlink-guide/

 

7. Constantinople, the next system wide upgrade of Ethereum, is coming to a node near you

Constantinople includes five different Ethereum improvement proposals (EIPs), which were completed on August 31. Once released on Ethereum, these proposals will permanently change the blockchain through a series of new backward compatible upgrades

this means that the nodes of the computer network running the Ethereum software must be updated with the whole system, or continue to run as separate blockchain entities

the system wide upgrade has caused quite a lot of dramatic events in the past, which should be more formally referred to as "hard fork". Most notably, when some users disagree with this change, it may lead to two different versions of the same blockchain running at the same time. At present, if you want to invest in Ethereum, you can trade in the bitnet exchange.

8. After several years of ups and downs,
in 2009, it was 7 cents a piece,
now the price is more than 20000
if we had invested 700 yuan to buy 10000 bitcoins at that time, would it be 2.6 billion now?