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What is Oracle concept in terms of blockchain technology?

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"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"

In blockchain, an Oracle is a service that fetches off-chain data (APIs, IoT, web) for smart contracts, enabling them to interact with real-world events.
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A blockchain oracle is a third-party service for smart contracts. Oracles provide trusted information based on the outside-world sources to the on-blockchain smart contracts. An oracle typically encapsulates the real-world complexity outside of the blockchain.
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