WTF Are Blockchain Oracles and How They Make Smart Contracts Smarter

WTF Are Blockchain Oracles and How They Make Smart Contracts Smarter

Open blockchain smart contracts does not have the capability to guarantee information reliability outside of their own network, they can only read the data saved on their respective blockchain. Oracles seeks to tackle this problem by providing a best-effort claims about the real world and feeding them to smart contracts in a trusted and secure manner, thus bridging the gap between smart contracts and the real world.