📚 Lesson 29 of 50
❓ Oracle — where does the blockchain get real-world prices?
A nice technical riddle: the smart contract executes a condition like “if Bitcoin reaches price X, then do Y”—but where did it get that price in the first place? The blockchain is a closed system that can’t see anything outside.
The solution is called an Oracle: services that bring real-world data—prices of whatever information—and deliver it to smart contracts in a reliable way.
The key word is “reliable”: if the oracle is tampered with, the contracts will carry out the wrong decisions with real money. And this has actually happened in famous hacks—an attacker tricked the oracle with a fake price, and the contracts followed.
That’s why a reputable oracle gathers the price from dozens of independent sources, not just one—and this is the secret value behind projects like Chainlink, which became a nearly trusted market infrastructure.
Evaluation takeaway: any decentralized financial app—ask first where it gets its data from.
📌 Summary: the blockchain is closed within itself—an oracle provides it with real-world data, and the security of any decentralized financial application depends on the security of its oracle.
📅 New lesson tomorrow—stay tuned and don’t miss out 🔔
💛 Join Abu Malak’s team: register on Binance with code ABOMALAK — a permanent discount on trading fees, plus benefits from our services and offers
#العملات_الرقمية #تعلم_الكريبتو #Binance
⚠️ Educational content — not investment advice
❓ Oracle — where does the blockchain get real-world prices?
A nice technical riddle: the smart contract executes a condition like “if Bitcoin reaches price X, then do Y”—but where did it get that price in the first place? The blockchain is a closed system that can’t see anything outside.
The solution is called an Oracle: services that bring real-world data—prices of whatever information—and deliver it to smart contracts in a reliable way.
The key word is “reliable”: if the oracle is tampered with, the contracts will carry out the wrong decisions with real money. And this has actually happened in famous hacks—an attacker tricked the oracle with a fake price, and the contracts followed.
That’s why a reputable oracle gathers the price from dozens of independent sources, not just one—and this is the secret value behind projects like Chainlink, which became a nearly trusted market infrastructure.
Evaluation takeaway: any decentralized financial app—ask first where it gets its data from.
📌 Summary: the blockchain is closed within itself—an oracle provides it with real-world data, and the security of any decentralized financial application depends on the security of its oracle.
📅 New lesson tomorrow—stay tuned and don’t miss out 🔔
💛 Join Abu Malak’s team: register on Binance with code ABOMALAK — a permanent discount on trading fees, plus benefits from our services and offers
#العملات_الرقمية #تعلم_الكريبتو #Binance
⚠️ Educational content — not investment advice
