As discussed in Chapter 9, Smart Contracts, Oracles are real-world data feeds into smart contracts. There are various services available in order to provide Oracles for smart contracts. A rather prominent one is Oraclize, which is available at http://www.oraclize.it/. This is especially useful if the smart contract needs, for example, live prices from a third-party source or any other real-life data, such as weather conditions in a particular city.
There are many use cases where Oracles can provide a trusted data feed to smart contracts in order to enable them to make decisions according to real-life events. Oraclize makes it easier for smart contracts to access the Internet in order to get the required data.
In order to utilize Oraclize ...
