Join the Spring 2021 Chainlink Hackathon
This March, you have the chance to help build the next generation of smart contracts.
The Chainlink Spring Hackathon has a prize pot of over $80k+ and is sponsored by some of the most prominent crypto projects.
March 15th - April 11th
Chainlink connects smart contracts with external data using its decentralized oracle network. Chainlink API requests are handled 1:1 by an oracle.
The Basic Request Model describes the on-chain architecture of requesting data from a single oracle source.
To learn how to make a GET request using a single oracle, see Make a GET Request.
For a more robust and trustworthy answer, you can aggregate data from many oracles. With on-chain aggregation, data is aggregated from a decentralized network of independent oracle nodes. This architecture is applied to Chainlink Price Feeds, which aggregate asset price data.
The Decentralized Data Model describes how data is aggregated, and how consumer contracts can retrieve this data.
To learn how to consume the price of ETH in your smart contract, see Get the Latest Price.
Updated 6 days ago