Have you ever thought about it—no matter how secure a smart contract on a single chain is, if the data it consumes is wrong, then even the most ironclad contract logic can't save it.

This is a real problem. Blockchain systems themselves are decentralized trust machines, but they have a built-in flaw—they cannot actively fetch off-chain data. They can't read the final scores of sports matches, real-time stock prices, or foreign exchange rates.

As a result, all those seemingly promising applications get stuck: DeFi's synthetic assets can't track real market prices, GameFi's game rewards can't link to real-world events, and prediction markets' settlements rely entirely on external data inputs. Everything hinges on a critical component—the oracle.

Traditional oracles are like messengers; as long as this messenger is bribed, attacked, or delayed by network latency, the entire system could collapse instantly. A single incorrect price feed can cause users to lose millions. This vulnerability has long been a hidden mine in the DeFi ecosystem.

Now, new generation oracle networks are emerging in the market, no longer relying on a single node to transmit data, but instead establishing more decentralized and redundant data infrastructure. Their stability and fidelity directly determine whether all applications built on top can operate normally or become worthless paper.