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    Build a Blockchain-Based Fantasy Sports Game Using a Chainlink External Adapter

    Chainlink hackathon winner Pr!ce explains how they built a fantasy sports dApp using Chainlink for fetching sports API data and performing off-chain computation.

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    DeFi Variance Swaps Chainlink
    Developers

    How to Calculate Price Volatility for DeFi Variance Swaps

    Hackathon winner Max Feldman explains how he used Chainlink Price Feeds to accurately calculate price volatility data for triggering DeFi variance swaps.

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    Fetch IPFS Data in Smart Contracts Using a Chainlink External Adapter
    Developers

    Fetch IPFS Data in Smart Contracts Using a Chainlink External Adapter

    Learn how to use a Chainlink External Adapter to fetch IPFS data and reduce Ethereum gas fees for large token distributions and airdrops.

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    Off-Chain Computation: Statistical Analysis With Chainlink
    Developers

    Off-Chain Computation: Statistical Analysis With Chainlink

    Learn how to use Chainlink’s External Adapters to enable off-chain computation of statistical weather analysis.

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    Chainlink Developers Starter Kit Showcase
    Developers

    Chainlink Developers Starter Kit Showcase

    The Starter Kit Showcase is an initiative that encourages developers to use our Starter Kits to create smart contracts that makes use of Chainlink tools.

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    How to Connect a Two-Factor Authentication (2FA) API to a Smart Contract With Chainlink
    Developers

    How to Connect a Two-Factor Authentication (2FA) API to a Smart Contract With Chainlink

    Chainlink hackathon winner Digital Bridge walks through how they built a two-factor authentication service to trigger on-chain events using Chainlink oracles.

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    Dynamic NFTs with Hardhat
    Developers

    Build Your Own Dynamic NFT With Hardhat

    Now that NFTs have burst into the mainstream, developers, gamers, and collectors alike are starting to explore how these unique digital assets can take on new functionalities and unlock even richer in-app dynamics. In our past tutorials, we have walked through how to use Chainlink oracles to build, deploy, and sell NFTs that are verifiably…

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    Craft Whiskey Crypto Payments With Chainlink Oracles
    Developers

    Craft Whiskey Crypto Payments With Chainlink Oracles

    For their Chainlink bounty-winning submission at the 2021 ETHGlobal MarketMake Hackathon, Jasper and Tillman Degens created Whiskey MarketMaker, a DeFi platform that leverages Chainlink oracles to enable small-batch whiskey distilleries to tokenize and list maturing bottles of whiskey for investors, while also allowing distilleries to earn interest on ETH earned from sales via an Aave…

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    Congratulations to the Spring 2021 Chainlink Virtual Hackathon Winners
    Developers

    Congratulations to the Spring 2021 Chainlink Virtual Hackathon Winners

    The Spring 2021 Chainlink Hackathon saw record-breaking developer turnout, with 4,000+ signups, 140+ project submissions, and participants hailing from 170+ countries and multiple blockchains across the ecosystem. Developers of all experience levels and technical backgrounds came together to discover the broad capabilities of Chainlink’s oracle infrastructure and build a wide range of hybrid smart contracts…

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    A banner showing how to fetch index prices in Solidity smart contracts.
    Developers

    Get Index Prices in Solidity Smart Contracts

    Learn how to use Chainlink’s Index Price Data Feeds to retrieve highly reliable crypto and traditional index pricing in Solidity smart contracts.

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