A decentralized oracle is a system that provides external data to blockchain networks in a trustworthy manner. Unlike traditional oracles that rely on a single source for information, decentralized oracles aggregate data from multiple sources to enhance reliability and accuracy.These oracles are crucial for smart contracts that require real-world data to execute properly. For instance, if a contract needs the price of a commodity or sports event results, a decentralized oracle gathers information from various reliable sources, ensuring that no single entity can manipulate the data.By distributing the data retrieval process among multiple independent nodes, decentralized oracles reduce the risk of fraud and ensure that the information is verifiable. This makes them fundamental to various applications, including decentralized finance (DeFi), gaming, and insurance, where trust in the data is paramount.In summary, decentralized oracles bridge the gap between blockchain technology and real-world information, enabling more complex and functional smart contracts while maintaining security and trustworthiness.