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Price oracles are a bridge between the real world and the network, providing the information needed for smart contract execution. Oracles can be further categorized into off-chain and on-chain, centralized and decentralized. The biggest benefit of price oracles is the number of new blockchain use cases they introduce. If an oracle goes down, incorrect values is produced oracle produces incorrect values, or a single point of failure is the only source of data sent to a smart contract and the information it receives triggers certain actions, regardless of certain actions.