Topic: Chainlink (LINK) - middleware that connects smart contracts to external world - page 3. (Read 23899 times)

Request Network Collaborates with Chainlink to Unlock Crypto Payments for Businesses



We are excited to announce that Request has successfully integrated Chainlink, the market-leading decentralized oracle network, to enable crypto payment for invoices denominated in fiat like US dollars or Euros.

By leveraging Chainlink’s widely used Price Feeds, Request is able to offer an automated and decentralized fiat-denominated crypto payment solution with its Request Invoicing app. Now, users have strong assurances that they are receiving a fair amount of crypto assets (such as $ETH or $REQ) at the time of invoice payment.

Crypto-native and non-crypto native companies can now use Request Invoicing to maintain their accounting in fiat currency, both simplifying the auditing process and ensuring regulatory compliance with existing accounting systems.

We selected Chainlink because of it’s time-tested oracle infrastructure that already secures tens of billions of dollars across DeFi. Most notably, Chainlink Price Feeds reflect volume-adjusted exchange rates that have been aggregated from all trading environments (DEXs and CEXs), with historical update reliability even during heavy market volatility and network congestion.



A collaboration to sustain the growth of the Request Network ecosystem

Chainlink Keepers Open Beta Is Live: A Fully Decentralized Service for Smart Contract DevOps

Chainlink Keepers provide smart contract developers, decentralized applications (dApps), and decentralized autonomous organizations (DAOs) with a highly reliable, decentralized, and cost-efficient method of automating smart contract functions and regular contract maintenance, creating a never-before-seen form of fully decentralized DevOps capabilities. Smart contract applications can use Chainlink Keepers to strengthen the uptime guarantees of critical on-chain functions and achieve end-to-end decentralized automation without relying on an additional layer of trust. The result is DeFi and the broader smart contract economy having more robust infrastructure to scale and secure higher amounts of value for users.



Chainlink Keepers can perform a variety of compute operations, monitoring, and time- and event-based tasks for smart contracts, such as:

🌧 Execute limit orders on decentralized exchanges
🌧 Mint tokens when reserves increase
🌧 Harvest yield from vaults
🌧 Rebase elastic supply tokens
🌧 Trigger automated trading strategies
🌧 Liquidate undercollateralized loans
🌧 Release locked assets after periods of inactivity
🌧 Top up token balances falling below a minimum threshold

Check more : https://blog.chain.link/chainlink-keepers-open-beta-is-live/amp/?__twitter_impression=true

CryptoBlades Integrates Chainlink VRF on Binance Smart Chain to Power Verifiably Random Gameplay



CryptoBlades, a blockchain- and NFT-based RPG on Binance Smart Chain (BSC), is pleased to announce a new integration with Chainlink, the industry-leading decentralized oracle network. CryptoBlades is beginning by using Chainlink VRF as the source of randomness used to determine the outcome of all entropy-based gameplay scenarios like the content of NFT-based loot drops, the weapon rarity from chance-based upgrades, and user matchmaking results. Additionally, Cryptoblades will look to support other Chainlink oracle services in the future to accelerate our development, such as Chainlink Price Feeds to enable the listing of NFT assets in our marketplace in stable currencies.

Chainlink VRF works by combining block data that is still unknown when the request is made with the oracle node’s pre-committed private key to generate both a random number and a cryptographic proof. The CryptoBlades game will only accept the random number input if it has a valid cryptographic proof, and the cryptographic proof can only be generated if the VRF process is tamper-proof. This provides users with automated and publicly verifiable assurances directly on-chain that each situation using Chainlink VRF for randomness is provably fair and cannot be tampered with or predicted by the oracle, outside entities, blockchain miners, or the CryptoBlades team.

Check more information: https://cryptoblades.medium.com/cryptoblades-integrates-chainlink-vrf-on-binance-smart-chain-to-power-verifiably-random-gameplay-6e7e50721ceb

If you are a smart contract developer and require a secure source of on-chain randomness for your dApp, check out the Intermediate #Chainlink VRF (Verifiable Random Function) tutorial, where we explore how to create a provably secure on-chain dice roll.

Randomness is very difficult to generate on blockchains. The reason for this is because every node must come to the same conclusion, forming a consensus. There's no way to generate random numbers natively in smart contracts, which is unfortunate because they can be very useful for a wide range of applications. Fortunately, Chainlink provides Chainlink VRF, AKA Chainlink Verifiable Random Function.

If you've walked through the Beginners Tutorial, you'll know how to write smart contracts, use Chainlink Price Feeds, and how to deploy a contract to a testnet. If not, head there and come back once you've finished.

In this tutorial, we go through:

⭐️The Chainlink request & receive cycle
⭐️Using the LINK token
⭐️How to use request & receive with Chainlink Oracles
⭐️Consuming random numbers with Chainlink VRF in smart contracts

Intermediates - Random Numbers

Project Ark Will Use Chainlink to Build Dynamic NFTs That Support Animal and Environmental Conservation



As part of our longer-term goals, we will also use Chainlink to access wildlife conservation data. This external data will be used to create dynamic NFTs, which change and/or react based on how successful a conservation effort becomes, such as fluctuating in value, triggering tiered rewards systems, determining the outcome of prediction markets, and more. The goal is to correlate and create closer connections between on-the-ground conservationists and financial supporters and artists from around the world through gamification and digital art campaigns.

Project Ark Will Use Chainlink to Build Dynamic NFTs That Support Animal and Environmental Conservation

Blockchain Fintech Tutorial: Lending and Borrowing With Pytho



Introduction
The classic fintech world is full of tools that enable a user to make sophisticated algorithmic trading models and systems. The decentralized finance (DeFi) world offers users and developers those very same tools, with significantly more transparency and flexibility around the underlying financial protocols and instruments, giving rise to DeFi quantitative and research engineers. DeFi developers and DeFi quants can even leverage derivatives of those tools and compose them into new services to build innovative financial positions that have no equivalent in the traditional fintech world. One of the fundamental tools for DeFi developers is the ability to lend and borrow cryptocurrency assets in a non-custodial way. Some of the massive advantages of working with DeFi lending and borrowing protocols are:

⚡️Frictionless short selling
⚡️Obtaining liquidity without closing out your positions
⚡️Gain yield on your deposited collateral
⚡️Things impossible in the traditional fintech world, like flash loans.

Read more: https://blog.chain.link/blockchain-fintech-defi-tutorial-lending-borrowing-python/

PERI Finance Will Integrate Chainlink Price Feeds to Secure PERI dApp Price Reliability


We chose Chainlink as our go-to oracle solution because its infrastructure is seamless to integrate and time-tested in production. Chainlink already secures leading DeFi protocols responsible for billions of dollars in smart contract value, maintaining robust security and high availability even amidst unexpected events, such as exchange downtime, flash crashes, and data manipulation attacks via flash loans.

PERI Finance is a decentralized cross-chain synthetic issuance and derivative exchange protocol that is building all kinds of synthetic assets DeX(Decentralized eXchange) on Polkadot. All users are able to collateralize PERI, USDC, and NFT to seize the opportunity of on/off-chain and traditional finance/non-finance assets’ value fluctuation.

PERI Finance will provide simple & leveraged synthetic assets called ‘PYNTHS’, designed to attractattracting arbitrageurs and increase trade volume, benefiting the stakers.

Chainlink Virtual Hackathon prize winner @CryptoOptyn has integrated #Chainlink Price Feeds on @0xPolygon mainnet to accurately price options contracts and synthetic assets, allowing users to receive exposure to any asset with a Chainlink price oracle.

Read more : https://chn.lk/3oPQL6F

@curio_invest integrates Chainlink to power its luxury car-backed NFTs (CTns) & NFT-backed stablecoin (CSC). Chainlink oracles provide reliable benchmark prices on the collectible cars backing CTns, which can be used as collateral to obtain stable loans.

Read more : https://t.co/fU4xgdMpue

Chainlink Market Update: Highlighting Industry-Leading Data Providers



The Chainlink Network is a community-driven ecosystem that provides smart contract developers seamless access to external data resources, supporting the creation of advanced hybrid smart contracts that combine on-chain and off-chain infrastructure. To further this goal, we are proud to announce that we’ve updated the Chainlink Market to provide a superior user experience and greater transparency into the Chainlink Network, allowing users to discover, and consume services from leading data provider operated Chainlink nodes in the Chainlink ecosystem.

With this update, both smart contract developers and data providers are provided access to a larger array of tooling that can be used to leverage the Chainlink Network in the most efficient and seamless manner possible. By supporting the growth of the blockchain ecosystem at large, new decentralized applications can be created that will entirely redefine the way society exchanges value and allow data providers to further monetize the growth of this parallel financial ecosystem.



Read more: https://medium.com/linkpool/chainlink-market-update-highlighting-industry-leading-data-providers-799ef3f4952c

@smartzip launches a Chainlink node to give smart contracts on-chain access to AVM—a house's estimated market value generated by a machine learning model. Developers can use AVM to price real estate for NFTs, prediction markets, and parametric insurance.

Chainlink Labs joins Hedera Governing Council

In an announcement from Chainlink today, the project said it had become the 21st member of the Hedera Governing Council to help organizations utilize decentralized applications. Chainlink will now be the preferred oracle partner for the Hedera network and provide integration for tokenization on Hedera.

more info https://cointelegraph.com/news/chainlink-labs-joins-hedera-governing-council

BENQI Will Use Chainlink Price Feeds Natively on Avalanche to Secure Its Protocol

BENQI is excited to announce our upcoming integration of the widely used Chainlink Price Feeds — pre-built and time-tested decentralized oracle networks that provide high-quality price data on-chain for various cryptocurrencies, foreign exchange rates, commodities, stocks, indices, and more. By being one of the initial protocols to leverage Chainlink on Avalanche, BENQI will decentralize one of the fundamental components within the protocol: the price oracle.

Chainlink Price Feeds are a critical component to securing key on-chain operations within BENQI’s algorithmic liquidity markets, particularly around supplying accurate and up-to-date price data to smart contracts when calculating lending rates and checking liquidation thresholds. Already proven to be the industry standard for decentralized price oracles, our integration with Chainlink will ensure the BENQI protocol has highly reliable and tamper-proof data feeds on all the assets offered in our lending and borrowing markets.

The initial Chainlink Price Feeds being launched include: AVAX/USD, LINK/USD, ETH/USD, wBTC/USD, USDT/USD and DAI/USD. Additionally, BENQI will leverage Chainlink in quickly and securely launching additional Price Feeds in the future to support the growth of our ecosystem.

Read more: Decentralizing BENQI’s Price Oracle Mechanism: https://benqifinance.medium.com/benqi-will-use-chainlink-price-feeds-natively-on-avalanche-to-secure-its-protocol-c5d682cb05c8

Luchadores.io Launches Using Chainlink VRF to Create Provably Random Lucha Libre Wrestler NFTs



Today, we are super excited to launch Luchadores.io alongside the use of Chainlink VRF to create NFT collectables that are truly randomly generated at the time of purchase, with 100% of the art and metadata stored on the Ethereum blockchain. With a limited supply of only 10,000, yet featuring millions of possible rare attributes and colour combinations, you won’t want to miss adding your very own unique Luchador to your NFT collection, providing you with a provably rare 24x24 SVG image that scales to any size.

The NFT world has opened up innovative ways to combine art and technology to build tight-knit global communities where participants can trade and share art with one another. Unfortunately, the recent hype has seen a surge in projects relying on pre-generated art with its metadata stored on web servers that could one day go offline or replace the original image with a rug… but not our Luchadores!

Read more:

Wise Token Will Integrate Chainlink Price Feeds to Secure its New Lending and Borrowing Platform

Following the success of its ETH and BNB liquidity pool events, WiseSoft announces an upcoming integration with the widely used and trusted Chainlink Price Feeds, delivering on another of its roadmap promises — having a secure and reliable decentralized oracle mechanism to power its DeFi platform. The Wise lending and borrowing smart contract will utilize Chainlink Price Feeds to determine the real-time value of assets, enabling it to issue fair market loans and secure its liquidation mechanism.

WiseSoft selected Chainlink Price Feeds because they are time-tested and easy-to-integrate oracle infrastructure that provides high-quality data feeds backed by robust decentralized security. Chainlink already secures billions of dollars in value across DeFi, with proven resistance to a variety of unexpected situations like API downtime, flash crash outliers, and data manipulation attacks like flash loans.

Understanding Wise and Its Integration of Chainlink

.@DafiProtocol will integrate #Chainlink to access secure asset prices and network volume metrics, enabling DaFi's new algorithmic token distribution model where teams lock up tokens and reward holders only when their dApp hits certain usage rates.

https://dafiprotocol.medium.com/dafi-protocol-collaborates-with-chainlink-to-power-new-incentivization-model-for-defi-protocols-89115245c80c

Floating, low-volatility stablecoin @FloatProtocol is using #Chainlink oracles to accurately determine its target price & calculate the current collateralization ratio, both of which are key to securing its monetary policy & price stabilization mechanism.

More: https://medium.com/float-protocol/float-protocol-integrates-leading-oracle-solution-chainlink-to-secure-the-stabilization-of-float-fa39ab0bc7ea

Exeedme Integrates Chainlink VRF to Fairly Distribute Rare NFT and XED Rewards to Community

We have made it our business to keep coming up with ways to make you happier. Tall order, right?
Well, today we are happy to announce that we are integrating the Chainlink’s world-class decentralized oracle network to access one of our platform’s most elusive of ingredients: an on-chain source of tamper-proof and verifiable randomness. We will be using Chainlink VRF to distribute random rewards such as NFTs and XED to our loyal token holders, as well as support dynamic NFT and lottery mechanics use cases in the future that are augmented by randomness.

https://twitter.com/chainlink/status/1391724716478681089?s=21

Decentralized multi-chain fundraising platform TrustPad will integrate Chainlink VRF on BinanceSmartChain to randomly determine which users from their staking pools get early access to fund new IDO projects, all in a provably fair & tamper-proof manner.

Learn more: https://trustpad.medium.com/trustpad-will-integrate-chainlink-vrf-to-fairly-determine-participants-in-supported-idos-67ec806acafc

We’re excited to announce the Chainlink Developers Starter Kit Showcase, a developer-focused initiative that will run throughout the month of May. Over the next month, we encourage you to experiment with our Starter Kits, either by building smart contracts that use Chainlink Price Feeds, VRF, or Any-API functionality, or by improving the Starter Kits in some way or form, and share your projects with the community.

Chainlink Starter Kits
The Chainlink documentation is a great place for learning how to build smart contracts that make use of Chainlink’s tools and features, offering developers a quick and easy way to either copy boilerplate code into their projects, or deploy the sample code snippets using Remix, the online Solidity IDE. These examples are simple, standalone contracts that demonstrate how to use Chainlink tools. However, they aren’t always ideal starting points when creating a new project that requires other things such as tests, deploy scripts, or integration with other off-chain parts of a project. Developers want robust, well-documented, up-to-date templates that they can easily build upon.

Read more: Chainlink Developers Starter Kit Showcase