Bitcoin SLA

1.

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/

 

2. Because this is a disguised pyramid scheme. There is no digital currency that only goes up but not down, which can be determined as a fraud basically. FIS has been reported by netizens a long time ago that this is a scam, and many local police have cracked down on it
even bitcoin, a digital currency, had its Waterloo days. For example, after the central bank issued the bitcoin risk notice in 2013, bitcoin once fell below the 2000 yuan mark. Although the token of European crowdfunding crowdfunding project has dividend income, the price is also fluctuating when trading.

3. In 1780, Austria Hungary mammy silver coin belongs to European silver coin. Austria Hungary empire was founded in 1867, and it was "Holy Roman Empire" before 1806. The title of mammy printed on this silver coin is Maria tracia, Queen of Rome, Hungary and queen of Bohemia Back) Archke of Austria and Burgundy, Marquis of Tyrol. The silver coin of Austro Hungarian Empire, the head of Queen tracia, the silver coin of 1 Taylor, weighs 28.2g.

Maria Theresia (1717-1780), female Archke of Austria, Queen of Hungary, Queen of Bohemia (1740-1780)

the emperor's mercy made me strong, and enabled me to wander on the road full of thorns, pain and tears that he arranged for me; Even at the end of the fight, I'd rather take off all my clothes than give up Silesia Maria Theresa's life Title:

erzherzogin von

4.

Pass is a digital form of rights and interests certificate, which represents a kind of right, an inherent and intrinsic value. Pass can represent all the rights and interests that can be digitized, from ID card to diploma, from currency to bill, from keys, tickets to points, cards and coupons, from stocks to bonds, accounts, ownership, qualifications, certificates and all the rights and interests of human society can be represented by pass

first of all, the general certificate must be negotiable, which may be global circulation or local circulation. The stronger the liquidity is, the stronger the general certificate attribute is; Secondly, the token must represent certain rights and interests and have certain value; Finally, Tongzheng must be based on blockchain technology, because it is the guarantee of Tongzheng as "effective proof", and it is also the basic difference between Tongzheng and other proof of rights and interests, that is, Tongzheng is decentralized

extended data

classification of general securities

1. Value type general securities: the rights and interests of this kind of general securities are based on a certain value. This kind of value may be various, which may directly correspond to the legal currency (such as the usdt anchored in the US dollar), or may correspond to a part of a famous painting painted by a famous painter, and so on

2. Right type token: the rights and interests of token are based on certain rights. For example, damai.com once issued the blockchain tickets for Zhang Xinzhe's concert. If you have the tickets, you can go to see the concert. This blockchain ticket is the right token

3. Income type pass: holding pass, you can enjoy the income brought by pass. This kind of token is the most common, such as bitcoin

source of reference: Internet Tongzheng