A blockchain oracle is any device or entity that connects a deterministic blockchain with off-chain data. These oracles enter each data entry through an external transaction.
The technology is blockchain-agnostic and is constantly working to integrate with more blockchains so that all blockchains can have access to secure and reliable off-chain data. And best of all, the documentation is great for beginner and experienced engineers alike.
In this article you will see Top 20 Oracle Crypto Projects | Crypto Oracles Services
1. Chainlink (LINK)
Chainlink is a blockchain abstraction layer that enables universally connected smart contracts. Through a decentralized oracle network, Chainlink allows blockchains to securely interact with external data feeds, events and payment methods, providing the critical off-chain information needed by complex smart contracts to become the dominant form of digital agreement.
The Chainlink Network is driven by a large open-source community of data providers, node operators, smart contract developers, researchers, security auditors and more. The company focuses on ensuring that decentralized participation is guaranteed for all node operators and users looking to contribute to the network.
2. Winklink (WIN)
The first TRON ecosystem comprehensive oracle WINkLink fully integrates the real world with the blockchain space, will be able to provide reliable, unpredictable and verifiable random numbers, and fully restore trust and improve user experience by tapping into data, events, and payment systems etc. from the real world.
WIN, a TRON-based TRC20 token, will be the governance token of the WINkLink oracle network.
3. Api3 (API3)
API3’s stated goal is to allow decentralized versions of APIs to be built, managed and monetized at scales.
Oracles are a form of middleware that sit in between APIs and smart contracts — increasing costs and centralization. API3 intends to get around this problem by enabling API providers to operate their very own nodes.
4. Tellor (TRB)
Tellor’s oracle works by incentivizing data reporters to put valid data on-chain while also disincentivizing bad reports via disputes and slashing. Becoming a reporter requires no verification process i.e. permissionless. Anyone anywhere in the world can be a reporter using open source software, a unique characteristic among blockchain oracles.
When oracle users request the value of an off-chain data point (e.g. BTC/USD), data reporters compete to add this value to an on-chain data-bank, accessible by all smart contracts on the networks Tellor supports (Ethereum, Polygon, Algorand, etc.) The frequency with which data can be updated is limited only by how much / how often users “tip” the feed with TRB.
Also unique to Tellor, data is submitted in bytes meaning the oracle is flexible and robust for nearly any blockchain application.
5. Uma (UMA)
UMA is an optimistic oracle (OO) that can record any verifiable truth onto a blockchain. The OO has been called “a human-powered truth machine” because it is flexible enough to handle ambiguity and expands the design space possible in web3.
UMA’s OO secures a diverse ecosystem of web3 applications, including cross-chain bridges, insurance protocols, prediction markets, and customizable DAO tooling products.
The Across bridge, Polymarket prediction markets, and Outcome.Finance DAO tools are all secured by UMA’s OO.
6. Band protocol (BAND)
Band Protocol is a cross-chain data oracle platform that is able to take real-world data and supply it to on-chain applications, while also connecting APIs to smart-contracts to facilitate the exchange of information between on-chain and off-chain data sources.
By supplying reputable, verifiable real-world data to blockchains, Band Protocol unlocks a range of new use cases for developers to explore — since they can now use any type of real-world data as part of their decentralized application (DApp) logic, including sports, weather, random numbers, price feed data and more.
BAND is the native token of the Band Protocol ecosystem and is used as collateral by validators involved in fulfilling data requests, as well as the main medium of exchange on BandChain — being used to paying for private data.
7. Iexec rlc (RLC)
8. Nest protocol (NEST)
NEST Protocol is a secured decentralized oracle built on Ethereum that provides creative solutions using different modules. The NEST oracle primarily solves the problem of price on-chain through a decentralized incentive solution, the price predictor.
The NEST Oracle determined price is captured on the blockchain, with each block recording a price. The price on each block is generated by a certain algorithm. This price is called the block-price or the Nest Price, which is the verified price of the asset.
NestNodes are an important part of the NEST Protocol ecosystem. As the source of power for NEST development, it provides numerous resources and funds for the early research and development of NEST. NestNodes provide benefits and influence from the NEST ecosystem including the governance rights to the NEST protocol via initiating and exercising votes on the network.
9. Dia (DIA)
DIA (Decentralised Information Asset) is an open-source oracle platform that enables market actors to source, supply and share trustable data. DIA provides a reliable and verifiable bridge between off-chain data from various sources and on-chain smart contracts that can be used to build a variety of financial DApps.
DIA is the governance token of the platform. It is currently based on ERC-20 Ethereum protocol.
10. Skey network (SKEY)
Skey Network is the world’s first platform to successfully bridge decentralized finance (DeFi) and IoT, and will create the platform for a new economy of physical assets called the ‘Blockchain of Things’ (BoT).
The non-fungibility (i.e. uniqueness) property of Skey Network NFTs is also a game-changer when applied to IoT. Using a Skey Network NFT, every smart object in a network can have its own unique token providing proof of ownership.
11. Oraichain (ORAI)
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12. HAPI Protocol (HAPI)
HAPI is the only crypto cybersecurity solution that can be integrated into DEXes and DeFi protocols preventing Money Laundering by embedding Smart Contracts and routing each transaction through it.
HAPI is a one-of-a-kind decentralized security protocol that prevents and interrupts any potential malicious activity within the blockchain space.
One can imagine HAPI being an all-encompassing, overarching protocol that combines crypto intelligence data from multiple sources allowing the most accurate information on malicious activity, and compromised wallets.
13. Xyo network (XYO)
XYO Network is a decentralized device network that anonymously collects and validates geospatial data. XYO is built on the Ethereum blockchain. Geospatial data is data that is associated with a specific location. The platform's goal is to encourage the education, research, and development of the XYO protocol in order to increase public understanding of the benefits of a geospatial location network that is driven by incentives.
XYO is an Ethereum token that powers XYO Network, a decentralized network of devices that anonymously collect and validate geospatial data.
On the XYO World platform, XYO tokens can be traded for and staked against unique ERC-721 tokens representing real-world locations.
14. Xfund (XFUND)
xFUND is the on-chain governance and access token for the Unification Oracle of Oracles and other DeFi products.
xFUND’s supply starts at 0. Its purpose is to enable off-chain governance for the entire Unification ecosystem and power a suite of products, including Oracle of Oracles.
15. Kylin network (KYL)
Kylin Network will provide a decentralized data infrastructure solution, called DeData for Web 3.0 leveraging Polkadot and Polkadot Substrate 2.0 Off-Chain Workers including Kylin Data Oracle, Kylin Data Analytics and the Kylin Data Marketplace.
KYL is the native utility token that is used for:
Staking for data miners, validators and arbitrators. All miners are required to stake KYL with a higher stake equating in a high probability of being selected to fulfill data requests. Intermediary of Exchange. KYL will be used to pay as a transaction, query fee, and also for data access behind paywall (private APIs). On-Chain Governance. KYL Token holders are able to vote for the protocol upgrades and parameter changes on Kylin Network.
16. Unmarshal (MARSH)
Unmarshal is a Multi-chain DeFi network of indexers that provides seamless access to Blockchain data for DeFi applications. Cater data in multiple formats like APIs, Websockets, GraphQL, Notifications any many more, without the need for application developers to decode it into their native applications.
$MARSH is the utility token that powers Unmarshal’s Network and also incentivizes network contributors such as Node runners and Indexers etc.
17. Umbrella network (UMB)
Umbrella Network is a community-owned, decentralized oracle service providing secure and extensively scalable data solutions for decentralized finance (DeFi) applications. Umbrella provides access to revolutionary financial datasets for blockchain app developers in the crypto space as well as those with an interest in real-world business transactions.
The decentralization power of the Umbrella Network is centered around the UMB utility token, which is used for staking, community votes and rewards and incentives. By introducing a layer two blockchain integration, Umbrella Network creates a highly scalable oracle solution.
18. Optionroom (ROOM)
OptionRoom (ROOM) is an oracle as a service (OaaS) and a forecast protocol built on Polkadot, where governance solves the oracle requests. The protocol allows users to create and participate in events where governance consensus pegs the derivates of the events with real-world outcomes.
Pegging means to control the currency of an asset with the real-world currency of a country. When a user opts for an oracle request, they pay a fee.
19. Witnet (WIT)
The Witnet protocol enables smart contracts to realize their true potential by giving them access to all sorts of valuable data sets, and by attesting and delivering that information securely thanks to its strong cryptoeconomic guarantees.
Being based on its own blockchain, Witnet is connected to multiple smart contract platforms through the use of bridges.
The Witnet blockchain is a single-purpose blockchain that has been built from scratch using the Rust programming language to address the particularities of the “oracle” use case (reliable and secure data providing).
20. Ares protocol (ARES)
Ares is an on-chain verifying oracle protocol powered by Polkdot. It provides reliable off-chain data efficiently and in a trustless manner.
Ares is built on Substrate and constructed as a parachain to link to Polkadot's ecology and share its security consensus. It is a scalable oracle network that provides decentralized data services to the Polkadot ecosystem and its parachains.
How and Where to Buy oracle Tokens?
You will have to first buy one of the major cryptocurrencies, usually either Bitcoin (BTC), Ethereum (ETH), Tether (USDT), Binance (BNB)…
We will use Binance Exchange here as it is one of the largest crypto exchanges that accept fiat deposits.
Once you finished the KYC process. You will be asked to add a payment method. Here you can either choose to provide a credit/debit card or use a bank transfer, and buy one of the major cryptocurrencies, usually either Bitcoin (BTC), Ethereum (ETH), Tether (USDT), Binance (BNB)…
Once finished you will then need to make a BTC/ETH/USDT/BNB deposit to the exchange from Binance depending on the available market pairs. After the deposit is confirmed you may then purchase Coin/Token from the Binance exchange.
Read more: Top 20 Media Cryptocurrencies
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Android Projects with Source Code – Your entry pass into the world of Android
Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.
These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.
Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project
Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.
To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.
Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.
Source Code: Simple Calculator Project
Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.
To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.
In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.
Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.
To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.
In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.
Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.
To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.
Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.
Source Code: Tic Tac Toe Game Project
Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.
This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.
Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.
So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.
Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.
Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.
You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.
The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.
Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.
Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.
The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!
Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.
To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.
Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.
For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.
The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.
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In today’s video we will discuss the Top 3 DeFi crypto projects for June 2021. Is it time for a DeFi summer? We’ll be reviewing the Bitcoin & Ethereum price. Lastly we will discuss the latest trending crypto news and other top altcoin developments.
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The origin of the article: https://www.youtube.com/watch?v=3yw89W9cz_Y
🔺 DISCLAIMER: The article is for information sharing. The content of this video is solely the opinions of the speaker who is not a licensed financial advisor or registered investment advisor. Not investment advice or legal advice.
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Business software giant Oracle is urging customers to update their systems in the October release of its quarterly Critical Patch Update (CPU), which fixes 402 vulnerabilities across various product families.
Well over half (272) of these vulnerabilities open products up to remote exploitation without authentication. That means that the flaw may be exploited over a network without requiring user credentials.
The majority of the flaws are in Oracle Financial Services Applications (53), Oracle MySQL (53), Oracle Communications (52), Oracle Fusion Middleware (46), Oracle Retail Applications (28) and Oracle E-Business Suite (27). But overall, 27 Oracle product families are affected by the flaws. Users can find a patch availability document for each product, available here.
“Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches,” according to the company’s release on Tuesday. “In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore strongly recommends that customers remain on actively-supported versions and apply Critical Patch Update security patches without delay.”
While details of the flaws themselves are scant, two of the critical vulnerabilities disclosed by Oracle rank the highest severity score – 10 out of 10 – on the CVSS scale.
These include a flaw in the self-service analytics component of Oracle Healthcare Foundation, which is a unified healthcare-analytics platform that is part of the Oracle Health Science Applications suite. The flaw (CVE-2020-1953), which can be remotely exploited without requiring any user credentials, requires no user interaction and is easy to exploit, according to Oracle. Affected supported versions include 7.1.1, 7.2.0, 7.2.1 and 7.3.0.
The second severe flaw (CVE-2020-14871) exists in the pluggable authentication module of Oracle Solaris, its enterprise operating system for Oracle Database and Java applications (part of the Oracle Systems risk matrix). The flaw is also remotely exploitable without user credentials, requires no user interaction and is a “low-complexity” attack. Versions 10 and 11 are affected.
Sixty-five of the vulnerabilities also had a CVSS base score of 9.8 (and six had a score of 9.4) out of 10, making them critical in severity.
Oracle did offer some workarounds, advising that for attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Users can also reduce the risk of successful attack by blocking network protocols required by an attack.
However, both these approaches may break application functionality, and Oracle does not recommend that either approach be considered a long-term solution as neither corrects the underlying problem.
“Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply Critical Patch Update security patches as soon as possible,” according to the company.
Oracle releases its CPUs on the Tuesday closest to the 17th day of January, April, July and October.
Previous quarterly updates have stomped out hundreds of bugs across the company’s product lines, including one in April that patched 405. There are also out-of-band updates; in June for instance, Oracle warned of a critical remote code-execution flaw in its WebLogic Server being actively exploited in the wild.
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Germany was the first country to recognize #Bitcoins as “units of value” and that they could be classified as a “financial instrument.”
Legal regulation for the decentralized industry in Germany is ongoing. Now, 16% of the German population 18 to 60 are #crypto investors.
These people who own #cryptocurrencies or have traded cryptocurrencies in the past six months.
41% of these #crypto investors intend to increase the share of their investments in #crypto in the next six months. Another 13% of Germans are #crypto-curious.
They intend to invest in #cryptocurrencies too. Yet, only 23% of the #crypto-curious said they are highly likely to invest, with the rest remaining hesitant.
Developing a mobile application can often be more challenging than it seems at first glance. Whether you’re a developer, UI designer, project lead or CEO of a mobile-based startup, writing good project briefs prior to development is pivotal. According to Tech Jury, 87% of smartphone users spend time exclusively on mobile apps, with 18-24-year-olds spending 66% of total digital time on mobile apps. Of that, 89% of the time is spent on just 18 apps depending on individual users’ preferences, making proper app planning crucial for success.
Today’s audiences know what they want and don’t want in their mobile apps, encouraging teams to carefully write their project plans before they approach development. But how do you properly write a mobile app development brief without sacrificing your vision and staying within the initial budget? Why should you do so in the first place? Let’s discuss that and more in greater detail.
It’s worth discussing the significance of mobile app project briefs before we tackle the writing process itself. In practice, a project brief is used as a reference tool for developers to remain focused on the client’s deliverables. Approaching the development process without written and approved documentation can lead to drastic, last-minute changes, misunderstanding, as well as a loss of resources and brand reputation.
For example, developing a mobile app that filters restaurants based on food type, such as Happy Cow, means that developers should stay focused on it. Knowing that such and such features, UI elements, and API are necessary will help team members collaborate better in order to meet certain expectations. Whether you develop an app under your brand’s banner or outsource coding and design services to would-be clients, briefs can provide you with several benefits:
Depending on how “open” your project is to the public, you will want to write a detailed section about who the developers are. Elements such as company name, address, project lead, project title, as well as contact information, should be included in this introductory segment. Regardless of whether you build an in-house app or outsource developers to a client, this section is used for easy document storage and access.
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