oracle区块链平台,oracle 区块链表

Oracle区块链平台是一种基于区块链技术的分布式记账系统，它可以帮助企业和个人实现数据共享、安全存储、数据保护和资产交易。Oracle区块链平台提供了一种安全、可靠的分布式账本技术，可以实现可信计算和数据共享，以及可靠的资产交易。本文将介绍Oracle区块链平台的三个关键词：可信计算、数据共享和资产交易。

可信计算是指在Oracle区块链平台上利用可信计算技术来实现安全的数据存储和数据交互。可信计算的核心思想是建立一个可信的网络，通过分布式计算和记账技术来实现安全的数据存储和数据交互。可信计算可以有效地防止数据被篡改，保证数据的安全性和完整性。

数据共享是指在Oracle区块链平台上，不同的节点可以安全地共享数据。数据共享可以提高企业之间的协作效率，提高数据的有效性，实现企业之间的数据共享。Oracle区块链平台提供了安全的数据共享机制，可以有效地防止数据泄漏，保护数据的安全性。

资产交易是指在Oracle区块链平台上，可以安全地进行资产交易。Oracle区块链平台提供了一种安全、可靠的资产交易机制，可以有效地防止资产被盗用，保护资产的安全性。此外，Oracle区块链平台还可以支持资产交易的实时监测，可以有效地防止资产被恶意篡改。

总之，Oracle区块链平台提供了一种安全、可靠的分布式账本技术，可以实现可信计算、数据共享和资产交易，为企业和个人提供了安全、可靠的数据存储和数据交互服务。

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『一』 How to trust off-chain information to the chain

A typical question: "What should I do if I need to use off-chain information during smart contract operation?"

For example, there is a World Cup finals guessing game on the chain, but the World Cup cannot be played on the chain; or you need to refer to today’s weather, which is obviously not native information on the chain and should be obtained from the Meteorological Bureau; in cross-border business , the legal exchange rate may be used, and the exchange rate must come from an authoritative institution and cannot be generated out of thin air on the chain.

At this time, the "Oracle" will be used, and one or more off-chain trusted institutions will write information such as football matches, weather, exchange rates, etc. to the chain. public contract, other contracts will uniformly use this trustworthy information confirmed by consensus, and there will be no ambiguity. Considering safety and efficiency, Oracle will have a variety of specific methods, which are quite interesting to implement.

A further soul torture is: "How to ensure that the data on the chain is authentic?" Frankly speaking, the blockchain cannot fundamentally guarantee the credibility of the data off the chain, it can only guarantee Once the information is on the chain, it is consistent across the entire network and difficult to tamper with. When the blockchain is combined with the real economy, it is bound to face the problem of "how to trust the chain."

For example, asset-related applications, in addition to personnel management, must also "integrate four flows into one", that is, "information flow, business flow, logistics, and capital flow" to match and cross-check each other, which will make the business The process is more credible. These "flows" often occur in the real world off-chain. To control them, the Internet of Things (sensors, cameras, etc.), artificial intelligence (pattern recognition, federal student data analysis, endorsement by trusted institutions, etc.) may be used. Technology and methods, this has gone far beyond the scope of blockchain.

So, the proposition of this section is actually: How can blockchain be extensively integrated with technology in the digital world to better exert itself? The role of multi-party collaboration and building trust.

With the development of the digital world, especially the strong promotion of "new infrastructure", we believe that extensive digitization can reduce the collection and verification of information while protecting privacy. The cost will be reduced, and the data collected will become more and more abundant.

For example, when using, transferring, and recycling physical materials, timely collection and monitoring can be carried out, or even multi-party, multi-channel, and multi-dimensional three-dimensional collection and monitoring, and On-chain consensus, publicity, anchoring, and on-chain and off-chain cross-validation can gradually approach the effect of "trusted on-chain in the physical world". The logic will be tighter and more credible, and the circulation of data and value will be more reliable. The friction of collaboration is lower.

The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the only approved "Smart Learning Factory 2020- Xueshuo Innovation Workstation" launched by the School Planning and Construction Development Center of the Ministry of Education of China. The "Blockchain Technology Major" pilot workstation. The professional position provides students with diversified growth paths, promotes the reform of the training model integrating professional degree research, production, and research, and builds an applied and compound talent training system.

"two』 LINK, what is ChainLink

LINK

1. Introduction

LINK is an ERC20 standardized token based on the Ethereum blockchain, used to pay Chainlink node operators in order to move from off-chain Retrieve data from the data, format the data into a blockchain-readable format, perform off-chain computing and ensure uptime. Chainlink tokens are used as part of running nodes to protect against bad actors.

2. Project Introduction

The first decentralized Oracle network, allowing anyone to securely provide smart contracts, access critical external data, offline payments and any other API functionality. Any user with a data feed, offline services like local payments, or any other API can provide it directly to the smart contract in exchange for LINK tokens. The ChainLink network is a distributed network of ChainLink nodes, all of which directly feed specific data, APIs, and the use of various offline payment functions to smart contracts. The Chainlink network consists of two independent parts, the on-chain and the off-chain, which must interact to provide services. The network is built in such a way that it can be upgraded so its different components can be replaced as better technologies and technologies become available. The on-chain component of the network filters oracles through a Service Level Agreement (SLA) based on metrics requested by one party to the smart contract. Using these metrics, Chainlink collects responses to SLA queries, ranks them using reputation and aggregation models, and provides final aggregated results of Chainlink queries that may be implemented into smart contracts. The off-chain component of the network consists of Oracle nodes connected to the Ethereum network, which independently collect responses to offline requests. These off-chain nodes can be located within any industry. For example, off-chain nodes operated by the New York Stock Exchange can provide real-time and accurate transaction information to the Chainlink network, or Visa network off-chain nodes can resolve transactions with consumers and suppliers through the Chainlink network. Interaction. Chainlink technology aims to integrate nodes from all these industries into a common network, which itself acts as a (low-cost) middleman, interpreting and correctly distributing data as needed. The Chainlink system will ensure that the results obtained from the oracles are accurate and allow the oracles to remain independent of the data they provide. Any data, payment, e-signature or other API provider, as well as individual developers, can easily join the Chainlink network by connecting APIs they are familiar with to the network. Once an API is connected to ChainLink, the user becomes a ChainLink node operator and is responsible for connecting the API to the ChainLink network. To incentivize operators to provide API information, they are compensated in LINK tokens for successfully completing online link requests. The project currently provides a fullyA distributed oracle network compatible with Bitcoin, Ethereum and Hyperledger. Support for other blockchains is expected in the future, which will allow cross-chain connections between smart contracts and any other public or private chain, allowing anyone in the world to use the Chainlink network regardless of their platform. All service providers will be able to securely offer smart contracts to access critical external data and possibly even off-chain payments.

3. Comment

Chainlink (LINK) is a decentralized network that provides information (oracle) for smart contracts. Chainlink was founded in 2017 by Sergey Nazarov and Steve Ellis to solve the problem of off-chain information sourcing through smart contracts for its execution parameters. Smart contracts are designed to automatically execute when certain parameters are met, but when these parameters exist off-chain, they rely on an information source (called an oracle) to provide the necessary information. Off-chain oracles tend to be centralized and rely on third parties to provide critical information in a trustworthy and time-critical manner. ChainLink aims to break this dependency by providing information to smart contracts through a decentralized network of oracles that work together on the Link blockchain to verify and forward critical information to these contracts. The ChainLink network allows users with data feeds or information bearing APIs to easily provide information to smart contracts in exchange for LINK tokens. Major Events September 2017 - ChainLink ICO. November 2018 - Acquired Town Crier (smart contract and data privacy project). June 13, 2019 - Announced partnership with Google Utility Link Network to provide timely, accurate information to smart contracts through Oracle's decentralized network (data sources and APIs). This information is crucial for efficient and accurate execution of smart contracts, as the required information exists off-chain and there must be a reliable way to obtain on-chain information. LINK tokens are used as payment for smart contracts that use data provided by the Link Network, where oracles that provide accurate information are rewarded in proportion to their share of LINK. Key Features Partnerships with major industry players such as SWIFT and Google Integration of Ethereum sidechains such as Harmony, Celer and Matic. Average block time n/a; Total supply 1 billion LINK; Oracle Consensus written to the Ethereum blockchain via threshold signatures.

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/

『三』 What is legal currency transaction?

Legal currency transaction refers to the C2C model transaction that people often say, which is a person-to-person transaction. transaction. The buyer transfers payment outside the trading platform, and the seller releases coins for him after confirming receipt. The exchange is equivalent to Taobao. Users can choose to be advertisers or counterparties. Advertisers refer to people who post advertisements for buying or selling coins on the platform. Counterparties can choose to buy coins from advertisers or sell coins to advertisers. The peer-to-peer trading platform can meet the needs of users to purchase Bitcoin or digital currencies such as USDT with legal currencies such as RMB, and can also meet the needs of users to sell digital currencies such as Bitcoin or USDT into legal currencies such as RMB.

Metaverse

Metaverse is an underlying public chain project that focuses on application development, and also adds smart assets (Smart Property), digital identity (Avatar) and oracles to the ecosystem. (Oracle) and other functions, users can register and issue digital assets on Metaverse, thereby realizing the transfer of value on the blockchain. In the future, we will gradually open source the project and try to provide technical and commercial support services to enterprise-level users. Digital assets on Metaverse Chain are trustless and can be freely registered, issued, transferred, stored, mortgaged and burned. The circulation of assets is very convenient and has broad application prospects in the field of financial asset transactions. Through the function of Avatar digital identity, anyone can own smart assets on the Metaverse blockchain. All information of application value will be encrypted using cryptography. Unless authorized by the Avatar holder, no one can obtain the user's encrypted information, which is very safe. The Oracle oracle function plays the role of a value intermediary in the Metaverse blockchain. By hosting the Oracle, real-life assets can be kept, and then the corresponding digital assets can be issued on the chain, enabling the mapping of real assets. Winding up becomes very convenient. Metaverse's wallet is an online web wallet and is also compatible with traditional PC platforms. Users can store Metaverse assets in the Metaverse wallet, or conduct transactions and issuance of proprietary assets. The Metaverse project has a layout in the field of asset issuance and trading. The unique oracle function can also connect real-world assets, which greatly enhances the project's implementation scenarios.

『四』Why Oracle is involved in the blockchain field

Oracle is involved in the blockchain field, mainly to expand its company's business.

Database software giant Oracle has officially become a member of the blockchain field. The tech giant officially announced its enterprise blockchain cloud platform at the OpenWorld 2017 conference in San Francisco. With this debut, which is expected to be official sometime next year, Oracle becomes the latest entrant into the "blockchain-as-a-service" ecosystem, joining two technology giants, IBM and Microsoft, that are currently working on Attract enterprise customers to use their own cloud distributed ledger resources. According to statements and statements from Oracle executives, Oracle is trying to use cloud computing technology to expand (simplify) existing cloud products, mainly for the digitization of various businesses.

He explained that a copy of the data in the blockchain network needs to be saved by all nodes. The growing adoption of blockchain among Oracle's core customer base will actually place new demands on the company's traditional data storage solutions. "In traditional computer science, there is only one copy of the database. With blockchain, all ledgers are distributed, so in effect, everyone has a copy of the data. This only amplifies the need for data storage."

『五』Project evaluation DIA: Oracle system focusing on the Defi ecological field

Now I will make an evaluation of this project so that everyone can have a comprehensive understanding of DIA.

1. Project establishment analysis (A)

Blockchain can safely and transparently interact on the chain through smart contracts. But blockchain is not a utopia divorced from reality. Blockchain ultimately needs to interact with real-world data.

In many scenarios on the blockchain, smart contract applications must obtain off-chain information sources and interact with data inside and outside the chain in order to trigger their logical judgments. For example, decentralized trading market systems on the blockchain, decentralized insurance systems, various prediction market systems, instant compensation systems for delayed flights, etc. all need to obtain real-time off-chain real data in a timely manner to trigger the execution of smart contracts. . Smart contracts cannot access off-chain data on their own, so they refer to some external data source.

We call the information bridge between the chain (blockchain) and the off-chain (real world) oracles, through which information can be transferred from off-chain to on-chain. , convey real-world information and interact with the blockchain.

If there is no oracle, the transmission of information will not be realized, and the large-scale integration and application of the blockchain into the real world will not be achieved, which hinders the implementation of the blockchain. Oracles are indispensable middleware in the blockchain field and are the "intermediaries" that connect a large number of blockchain smart contracts to real-world data. There will be tens of billions of dollars of space in the future.

DeFI, which has become popular in recent years, also needs secure middlewareTo connect to on-chain and off-chain data. Because the entire distributed ecosystem relies on oracles and its demand for data grows exponentially, the entire application is exposed to oracle vulnerabilities.

Currently, the oracle project with the largest share and highest market value on the market is Chainlink, which once entered the top ten in market value. The decentralization of LINK mainly relies on token economic incentives and reputation systems to establish a virtuous cycle ecosystem. System, the triggering of the oracle needs to be realized through transfer. The disadvantage is that all votes are taken on the chain, resulting in higher gas fees.

In addition to Chainlink, traditional decentralized oracle projects include DOS, Tellor and Band, etc. Their technical logic is similar. Most of them collect data off-chain and verify on-chain. The core problem of this type of oracle is that verification relies on a third party and is weak in resistance to attacks. Some time ago, a company called Zeus Capital released a 60-page short-selling report on Chainlink, pointing out that LINK nodes are centralized, opaque, and have problems with the economic model of the token.

The main oracle products currently on the market are largely opaque, inconsistent, inaccurate and difficult to expand, which are incompatible with the security, transparency and other values ​​represented by DeFI. An oracle project that truly adapts to the DeFI field and can provide data support for decentralized finance is imminent.

2. Technical Features (BBB)

The DIA introduced today is exactly the project that can solve the problems of existing oracle machines. DIA’s official website introduces it this way: an ecosystem of open financial data in the financial smart contract ecosystem.

DIA’s goal is to enable data analysts, data providers and data users to use the platform’s functionality together. DIA establishes a reliable and verifiable bridge between off-chain data from various sources and on-chain smart contracts, which can be used to build various financial dApps. A simple understanding is that DIA is an oracle system specially built for the DeFi ecological field.

The model of the oracle machine is relatively simple. The core has two aspects. On the one hand, it is how to decentralize the authenticity of the data obtained, and on the other hand, it provides incentives for users who submit high-quality data.

As mentioned before, Chainlink, the current leading oracle machine, uses work order allocation and collaboration between on-chain contracts and off-chain distributed nodes, through reward and punishment mechanisms, reputation contracts and aggregation models. (aggregating data from multiple data sources) to perform data requests and feedback. However, the data obtained in this way does not have strong security endorsement. The core reason is that if the uploader conspires to do evil, there will be a certain delay in being punished, and the data has already beenPut into use, everything is too late.

The operation steps of the DIA system are as follows:

1. The data collection mechanism directly obtains collected data from various sources such as exchange APIs and public sources.

2. The data is hosted on the DIA server and hashed and encrypted on the chain. The method source code and scraper code are recorded on Github. Push is available via API and oracles. Multi-party games set up a strong reward and punishment system, so that prices are formed on the chain. This is a fact that miners generate through games. The database layer can flexibly handle a variety of different types of data flows, from high-frequency trading APIs to never-changing and accessible data in high-performance key-value stores.

3. Distributed financial protocols and index providers and others can directly access the data flow and use DIA's restapi and Oracle systems to distribute collected and aggregated data.

The working principle of DIA mainly includes five aspects: data request, data submission, verification, data storage and data access through Oracle or API. DIA oracles that apply this model have better decentralization, more realistic data, stronger stability, and higher attack costs.

DeFI platforms like MakerDao, Synthetix, Ampleforth and others are particularly vulnerable to oracle vulnerabilities. Since these platforms are envisioned as autonomous financial protocols that cater to a variety of financial needs, they rely heavily on transparent, accurate price oracles.

DIA’s data sources are transparent and publicly accessible to everyone. Market participants can provide, share and use financial and digital asset data, and DIA’s mission is to democratize financial data. Access data directly via API or oracles, connecting DIA directly to computational agents or any other distributed financial (distributed) application.

The DIA platform leverages cryptocurrency’s economic incentive model to acquire and verify data. The DeFI platform will migrate to a transparent and auditable third-party solution to ensure the sustainability of its core products.

3. Token economy and Bonding curve (BBB)

During the entire operation process, DIA can play an important role as a governance token. DIA tokens can be used to fund data collection, data verification, voting on decisions related to the association, and also to incentivize the development of the platform itself, enabling decentralized communities to autonomously run the DIA platform. DIA uniquely meets these needs.

DIA has four functions, namely incentive, verification, governance and value addition.

The community can receive rewards by funding public rewards for data cleaning, development of effective algorithms, discovery of system vulnerabilities, etc.

DIA is currently not listed on the exchange and will start crowdfunding soon. The information of DIA is as follows:

Total circulation: 200 million

Official website: diadata.org

Private placement: 10 million (5%)

Public sale: 30 million coins (15%)

Public sale form: Bonding curve

Here is an introduction to what Bonding curve is. This participation model can be any Anyone can participate in "bonding curve allocation". The bonding curve is an innovative type of public offering design where a well-designed smart contract can automatically create a DIA market where the price of each token increases when tokens are purchased from the contract and decreases when sold back. So in effect, transactions are determined by the average price of each token in the transfer batch and the number of tokens on the market. Selling through the bonding curve will provide liquidity on the Gnosis Protocol Mesa DEX.

Start time: 15:00 CET on August 3, 2020 (21:00 Beijing time);

End time: 3 CET on August 18, 2020 point (9 o'clock Beijing time);

Duration: about 14 days

Supported currencies: ETH, DAI, USDC

Initial price: 0.05 USD

Initial supply: 30 million

Restricted countries: United States, Iran, etc.

DIA team will launch on August 3rd, CET The DIA redemption page will be released at 3 pm on Monday (9 pm Beijing time). The redemption link will be published on the DIA token website (https://token.diadata.org/).

You can participate through wallets such as IMTOKEN or MetaMask, and convert ETH and USDT into anchored WETH or USDC in the corresponding exchange interface. It is recommended to exchange for DIA at Balancer DEX. I believe everyone knows this step, so I won’t go into details.

4. Team Analysis (BB)

You can check the DIA team situation through the news on the official website.

1. Michael Weber – Association Chairman Association Chairman

Michael founded Bonsum & Goodcoin in 2014, a blockchain-powered user loyalty solution and the first-ever qualitative “Good” digital currency, The currency was successfully sold in 2016. He is a cryptocurrency veteran and serial entrepreneur who has worked as an investment banker, data analyst and derivatives trader at Nomura Brothers, Switzerland-based InsureTech and German multinational Bertelsmann Michaels, where his expertise has led him to Gained a deep understanding of Germany's financial legal framework and digitalization. Michael is also an active board member of NGO Hostwriter.org and co-founder of bitEasy.

2. Paul Claudius – Association Board

Paul is also a serial entrepreneur and cryptocurrency investor. He has over 10 years of experience in various strategic matters and international growth initiatives, expanding businesses across Europe. Prior to founding DIA, he was European Director of Berlin-based nu3 Group, transforming multi-million e-commerce businesses into vertically integrated brands. Paul began his career with BNP Paribas Corporate Development in New York and AXA Private Equity in Frankfurt am Main.

Paul is the founder of bitEasy and has advised and invested in several medical technology, IoT and e-commerce start-ups.

3. Martin Hobler – Association Board

Martin is a successful Internet entrepreneur with many years of expertise in marketing, sales and strategy. Martin previously worked as a sports manager in Formula 1 and ATP Tennis, working with Lacoste, Wostenner and other international brands. An internet pioneer, Martin also helped found Berlin-based mobile navigation company Gate 5, which was later successfully sold to Nokia.

Overall, the main members of the DIA team have been working in the blockchain field for a long time and have deep insights into blockchain technology. The team currently has 12 members, and all members are available on LinkedIn, which is highly authentic.

The core members are serial entrepreneurs in the blockchain field and have backgrounds in the financial industry. The DIA team is a team with solid technology and abundant resources in the blockchain and financial industries.

5. Community (B)

The official user community listed on Dia’s official websiteThe main channels are telegram, Medium homepage, and Twitter.

1.telegram

The Telegram group has 3,430 supporters. The number of supporters is average, and the speeches are relatively active. They mainly discuss the situation of the project ICO.

2. Medium

There are 155 supporters. Although the number is not large, the latest published content is July 29th. The information is updated in a timely manner. The latest article is The main content is how to obtain DIA.

3.Twitter

4.Google Trends

The term "DIADATA" was selected for query, but there is not enough search volume.

Oracles occupy a pivotal position in the blockchain field. In particular, the main oracle products on the current market are largely opaque, inconsistent, inaccurate and difficult to expand, which is incompatible with the security, transparency and other values ​​represented by DeFI.

DIA’s goal is to enable data analysts, data providers and data users to use the platform’s functionality together. DIA establishes a reliable and verifiable bridge between off-chain data from various sources and on-chain smart contracts, which can be used to build various financial dApps. Anyone aiming to provide accurate information about digital assets or financial markets can obtain highly reliable data from the DIA platform. The core team of DIA are all serial entrepreneurs in the blockchain field, a team with solid technology and rich resources in the blockchain and financial industries. These will provide huge support for the development of DIADATA.

DIA’s solution is to solve this problem by creating a distributed Oracle network. Although the field of oracles has great prospects, it is also difficult to implement. DIA still has problems such as insufficient publicity and low community activity, which need to be further strengthened.

『Lu』 Energy Blockchain Research | Blockchain can help us fight climate change

[Energy people are watching, click on the upper right corner to add 'Follow' 】

Blockchain can help us fight climate change

·Smart contracts run on the basis of blockchain, which can unlock many new ways to deal with climate change and solve its problems. coming impact.

·Achieving this requires a value intermediary network, which can help the blockchain collect information from real society and interact with it.

Note: Oracles (value intermediaries) provide data to smart contracts and are the bridge between the real world and the blockchain.

Smart contracts allow people to design a globally accepted and fully automated incentive system that can directly rewardEncourage individuals, companies and governments to engage in sustainable practices. These practices include: regenerative agriculture, carbon offsets, crop insurance, and more. In promoting global green actions, smart contracts have greatly incentivized participants.

Initial obstacles

The development of green smart contracts is hindered, mainly reflected in the inability of the blockchain to interact with information from various regions in the real world, including the environment. In recent years, however, physical companies have finally been able to go into production through oracle mechanisms that integrate global data onto the blockchain.

For example, these oracle mechanisms can now publish agricultural information sets directly to the blockchain, and smart contract developers can eventually develop a series of small predictions about food yields, soil quality, climate reporting, carbon offsets, and more. program. As more and more environmental data sets, such as weather patterns or Internet of Things (IoT) sensor readings, are fed into the blockchain, developers are beginning to develop a wide range of environmentally friendly smart contract applications.

The following are three related examples

1

Regenerative agriculture

Smart contracts allow ordinary people to participate in the fight against climate change One of the most important ways, it promotes the development of regenerative agriculture and makes regenerative agriculture possible.

Smart contracts can interact with real-world information to autonomously reward those who develop important land.

For example, the Green World Campaign is working with Cornell University to build a smart contract that can automatically reward those who pass satellite information through People who have successfully regenerated land by increasing vegetation cover, improving soil, etc.

Value intermediaries can also extract data from satellite images and trigger smart contracts built on the blockchain to ensure that people receive rewards fairly and transparently.

2

Transforming consumer awareness

Smart contracts can support environmentally conscious individuals and organizations. For example, if a person successfully triggers a reforestation smart contract, they can be paid in the form of carbon credits that can be sold to charities, crowdfunding, or even companies that have a positive impact on the environment.

Smart contracts can also provide environmentally conscious consumers with more choices in energy consumption.

For example, decentralized energy grids like the Brooklyn Microgrid Projectare could use smart contracts and blockchain as a coordination mechanism to allow consumers and their neighbors to take advantage of solar energy Generate electricity and generate transactions. Buying and selling solar credits among neighbors can reduce energy transportation costs and greenhouse gas emissions.

Although perhapsMany consumers are already changing their spending habits, but broader social behavioral shifts may require combining financial incentives with consumers’ sustainable choices. By using smart contracts connected to real-world data, different spending habits trigger different reward and punishment mechanisms. This will promote changes in consumer behavior.

3

Hedging risks by insuring crops

Climate change is altering weather patterns around the world. The vast majority of farmers around the world are uninsured, leaving their crops extremely vulnerable to weather conditions such as heavy rain, drought, and strong winds.

Adverse weather conditions can cause financial losses to farmers, devastating their families and leaving farmland damaged and abandoned.

Fortunately, smart contracts can detect changing climates through value intermediaries and propose solutions.

Using smart contracts, farmers can insure their land, stipulating predefined conditions for the contract to be effective (such as a certain amount of rainfall); they can then detect weather patterns through a value intermediary.

If the value intermediary detects that the conditions have been met, the farmer automatically gets a sum of money.

Smart contracts communicate climate information through value intermediaries, allowing farmers to protect their property with just a smartphone.

Outlook

The combination of blockchain and value intermediary opens up a new era of smart contracts, which can create a new incentive model for sustainable human energy consumption. . As discussions about climate change continue to escalate, it’s important to understand that the impact of this industry on the environment will go far beyond the consensus mechanisms of any one project.

National Energy Information Platform contact number: 010-65367702, email: [email protected], address: People’s Daily, No. 2 Jintai West Road, Chaoyang District, Beijing

『柒』 OCT: Connecting the world with blockchain

Tianyu has written a series of articles on OCT before. This time Tianyu changed the template of project analysis and talked about OCT again.

First, EuroChain is the world’s first basic application that directly meets the needs of the blockchain ecological Oracle (oracle)
Second, EuroChain is a decentralized multi-blockchain The Oracle technology platform uses its own PoRD mechanism to introduce real-world data into the blockchain and use this as infrastructure to provide services for other blockchain applications.
Third, Oulian will provide Oracle services for real-world data within the blockchain, and can also provide Oracle services for cross-chain data.
Fourth, based on OracleIn addition to realizing the functions of prediction market applications such as Augur and Gnosis, Chain can also support smart contract businesses that require higher frequency access to off-chain data, such as smart investment advisory and other scenarios.
Fifth, EuroChain will change the current development model of blockchain applications, establish a new ecosystem, and serve blockchain applications that can truly change the real world.

At present, most dapps are limited to their own data closed-loop mechanism. People generate and consume data within this chain. For smart contracts that are determined to serve real life, off-chain data must be obtained to trigger logical judgments. Therefore, such as decentralized trading market systems, decentralized insurance systems, various prediction market systems, instant compensation systems for delayed flights, etc., all need to use Oracle oracles to obtain real data to execute smart contracts.

Then OracleChain recreates a pair of wings based on the underlying foundation of the blockchain. It bridges the data gap between the real world and the blockchain world by providing off-chain data for blockchain applications and breaks the boundaries between different areas. The data gap between blockchain applications makes the blockchain society more dynamic and creates more rich possibilities.

**Zhao Wei (Harvey Laolang): CEO **
Tan Zhiyong: Chief Scientist
Song Chenggen: CTO

The three founders of Oulian are all from He has technical PhDs from different universities around the world, has participated in multiple blockchain projects, and has rich experience in the blockchain industry. Members of the EuroChain team participated in the formulation of the Ministry of Industry and Information Technology’s blockchain standards and are among the very top standard drafters, reflecting EuroChain’s technical influence in the blockchain field. Today’s blockchain technology talents are hard to find, and the strength of the Ouluchain team is definitely among the best in the country.

PoRD double-effect mechanism

Turing-complete smart contracts and consensus algorithms can be trusted. By introducing data from the physical world into the blockchain, and by introducing the original PoRD, the reward and punishment mechanism of data value removes the authoritative control of data by the government or central agencies, allowing ordinary institutions and individuals who own data to monetize the data.

The European Chain project launched R&D and project ICO in June 2017, and released the Demo version in December 2017. The official commercial launch needs to wait for the release of EOS. EuroChain’s first application prediction market was launched in June 2018.

Strong technical strength

Built on EOS to meet large-scale commercial needs

PoRD double-effect mechanism

Slightly insufficient marketing capabilities< /p>

Few exchanges are listed

The DAPP project party has not purchased in large quantities

The DAPP project party needs to use OCT tokens to purchase the data services of the European chain. First, there are not many projects doing prediction markets at present, and second, there are even fewer prediction projects based on EOS. So the purchase rate is not high.

I am optimistic about OCT because I am betting on the future of EOS. OCT can be regarded as the Oracle of the eos ecosystem, providing data for all networks in the eos ecosystem. This is a low-level project. Comparing it with Oracle’s market value of more than 200 billion US dollars, you will know how big the market potential of OCT is. At the same time, because there are few exchanges, OCT’s liquidity has not been released. Therefore, it is seriously underestimated. At the same time, OCT founder Lao Lang is also a technical expert. Lao Mao once said that if there are 5 people in China who can engage in the development of underlying blockchain technology, Lao Lang will definitely be one of them. Therefore, no matter from the positioning market of the project, to the team founder, to the project to the valuation, OCT is a seriously underestimated value currency.