Integrating Data Streams for DeFi Applications
summary
Shows how to fetch sub-second latency price quotes from Chainlink Data Streams on Arbitrum Sepolia using a pool‑based oracle, Chainlink Automation log trigger automation, and the Chainlink verifier contract, paying fees in LINK or native token. Demonstrates deploying a streams-compatible contract, funding it with five LINK, emitting a log to trigger a lookup, receiving a bundled report, verifying it onchain, then using the verified price to execute a DEX swap (0.1 WETH → ~200 USDC) so the prototype works end to end. verified bundle report
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chapters (10)
- 0:00Introduction
- 1:11Chainlink beyond price feeds
- 6:31Chainlink Data Streams
- 11:34Log trigger automation
- 23:03First smart contract
- 31:34Setting up automation
- 41:10Verify price trigger
- 49:18Exercise one recap
- 51:07Low-latency DEX
- 1:03:44Q&A
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