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Today, we will discuss Oracle services like Provable and Chainlink Oracles that bring external information onto the blockchain. This can help with tasks such as generating random numbers, calculating asset prices, and obtaining real-world event information. By connecting with exchanges like Coinbase and Kraken, Oracle smart contracts can fetch data such as the price of Ether and share it with other smart contracts. By aggregating responses from different sources, the Oracle contract can provide accurate information, in this case, averaging the price of Ether from Coinbase, Kraken, and Binance to be 2518. This allows smart contracts like Maker DAO to access reliable data quickly.