Intermediate

The Oracle Problem

Intermediate Track 06
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Blockchain Has No Eyes

"Liquidate if ETH price hits $3,000" โ€” smart contracts cannot see the outside world directly. Oracles become their eyes.

What you'll learn

  • โ†’ The oracle problem: the fundamental reason smart contracts can't read external data
  • โ†’ Simulation of Chainlink's decentralized oracle network aggregating data from multiple nodes
  • โ†’ How flash-loan oracle manipulation attacks work and how TWAP defends against them
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DeFi Price Feeds

Aave and Compound use oracle prices for collateral evaluation and liquidation.

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Insurance Triggers

Weather-based crop insurance. Automatic payout on verified events.

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Sports Betting

Oracle delivers game results on-chain. Automatic payouts.