Solidity naturally has several problems that is difficult to implement. One of the things is read off-chain data from smart contract.Let’s say, if I want to get ETH/USD price in real time from smart contract, we don’t have a way to get from outside of blockchain. Oraclize bridges between on-chain and off-chain data sources and …
![](https://blog.hg-world.com/wp-content/uploads/2019/02/oraclize-450x300.png)