This talk is from ETHDenver, the world’s largest Web3 BUIDLathon and Community Gathering. ETHDenver’s content is crypto and blockchain focused.
Speaker: Johann Eid of Chainlink
Abstract: The vast majority of useful smart contracts extend beyond the blockchain to connect with external sources including data feeds, web APIs, and traditional bank payments. However, to maintain a connected smart contract’s overall reliability, the inputs and outputs to the contract also need to be secure.
In this workshop, you will learn how to connect and trigger smart contracts securely using external data sources such as cryptoprice feeds, freight information and flight data. In the workshop, you’ll build and deploy a smart contract that connects with multiple oracles powered by the Chainlink network. We’ll walk through an example that uses Metamask and Remix to develop Chainlink contracts to obtain the current price of ETH from an API endpoint. We also go over best practices and common issues to avoid.
This talk was recorded Friday, February 14, 2020.
ETHDenver 2020’s content themes included DeFi; DAOs and Token Engineering (TE); Gaming and Usability; Protocols and Interoperability; and Public Good and Social Impact.
Industry experts also weighed in on topics like decentralization, privacy, identity, non-fungible tokens, scaling, governance, diversity, and arts and culture in blockchain technology.
The 2020 event was February 14-16 in Denver, Colorado and hosted 2000+ blockchain enthusiasts, developers and community members from 50 countries and 50 U.S. states.
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