Chainlink (LINK) - middleware that connects smart contracts to external world

[argakiig]

sayBLOWE Will Use Chainlink Oracles to Create Dynamic Hip Hop NFTs

Blockchain-based musician platform #sayBLOWE will integrate Chainlink to enable dynamic #NFTs that represent hip hop’s most celebrated artists. #Chainlink oracles will update NFTs’ on-chain trending scores based on artists’ real-world performance data

sayBLOWE is a blockchain-based platform with a mandate to be the catalyst in the advancement of Hip Hop culture. In order to meet that goal, we’re excited to announce our intention to leverage the market-leading Chainlink Oracle Network to create dynamic Hip Hop NFTs on our new platform.

These dynamic NFTs will be unique digital assets that are digitally depicted using famous artists, with each NFT’s value based on that Hip Hop artist’s career as determined by the Hip Hop community and a variety of real-world data sources delivered by Chainlink Oracles.

sayBLOWE Will Use Chainlink Oracles to Create Dynamic Hip Hop NFTs

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[argakiig]

Fairly and Securely Selecting Lady Luck Winners Using Chainlink VRF



Lady Luck is pleased to announce our live integration of Chainlink Verifiable Random Function (VRF) to access secure and verifiable random numbers used to select winners for each Lady Luck Lottery draw. By leveraging Chainlink VRF — the industry-leading Random Number Generator (RNG) solution for smart contracts — Lady Luck is now able to host fully decentralised, automated, and provably fair lotteries.

Transparency and trust are two core principles of Lady Luck. Trust is obtained through the security of VRF, making it impossible for the Lady Luck developers, oracles, or the public to tamper with the winner selection process. Additionally, the seed used to generate the VRF result is made completely public after each VRF call, providing transparent verification of the RNG’s integrity. In line with these core principles, Lady Luck has been designed to work entirely on-chain, negating the need for trusting any 3rd party organisations or services.

Read more: https://lando-lady-luck.medium.com/fairly-and-securely-selecting-lady-luck-winners-using-chainlink-vrf-7f84e724adea

[argakiig]

Chainlink Developers Starter Kit Showcase

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

[Unsoldier]

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

[lonerangerh]

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

[NotHatinJustTrollin]

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

[NotHatinJustTrollin]

.@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

[NotHatinJustTrollin]

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

[NotHatinJustTrollin]

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:

[NotHatinJustTrollin]

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

[cryptonx]

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

[argakiig]

@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.

[NotHatinJustTrollin]

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

[NotHatinJustTrollin]

@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

[NotHatinJustTrollin]

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

[argakiig]

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.

[NotHatinJustTrollin]

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/

[argakiig]

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

[Dalib]

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

[NotHatinJustTrollin]

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