Tutorial

Introduction to Oracles

9 steps

In this tutorial, we’ll go through what oracles are, when to use it, and why we should use it. We’ll also cover the different types of oracles and their use cases. Lastly, we’ll cover a quick example of one of the most common use cases of oracles - getting price feeds.

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Helpful prior knowledge

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Learning Outcomes

By the end of this tutorial, you will be able to:

  • Describe what oracles are and why they are used
  • Describe the situations where oracles are used
  • Explain the differences between the different types of oracles
  • Explain the use cases of oracles
  • Get the price feed of ETH/USD on the Goerli Testnet

Tutorial Steps

Total steps: 9

  • Step 1: What are Oracles
  • Step 2: Benefit of Oracles
  • Step 3: Types of Oracles
  • Step 4: Blockchain Oracle Use Cases
  • Step 5: Introduction to Chainlink
  • Step 6: Create a MetaMask Wallet
  • Step 7: Claim Goerli Testnet Tokens
  • Step 8: Chainlink Price Feed
  • Step 9: Test What You Learnt
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