
Blockchain Oracles Explained: How Smart Contracts Get Real-World Data (2026)
Blockchains can't see past their own network — so how does a smart contract know the ETH price? A plain guide to oracles, the oracle problem, and Chainlink.

Blockchains can't see past their own network — so how does a smart contract know the ETH price? A plain guide to oracles, the oracle problem, and Chainlink.