An Oracle Node is a component that connects smart contracts to external data sources. Smart contracts operate on blockchains and can only access the information stored within that blockchain. However, many applications require data from outside sources, such as price feeds, weather data, or event outcomes.Oracle Nodes serve as intermediaries that fetch and verify external data before transmitting it to the smart contract. This way, the contract can execute based on real-world events or conditions.There are different types of Oracle Nodes, including centralized, decentralized, and trusted oracles. Centralized oracles have a single point of failure, while decentralized oracles reduce trust issues by aggregating data from multiple sources. The reliability of an Oracle Node is crucial because if it provides incorrect data, the smart contract’s execution could lead to significant losses or unintended consequences. Thus, ensuring trustworthiness and accuracy in data delivery is essential for the successful implementation of smart contracts.