Defining Oracles: Enablers of the Decentralized Finance World
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Oracles are entities that enable various functions in blockchain structures by providing access to legacy or offchain information systems, acting as data ports for decentralized finance applications. These oracles act as information providers for tasks that require either the posting of data or require data to complete specific tasks. See more for yourself here (https://news.bitcoin.com/defining-oracles-enablers-of-the-decentralized-finance-world/).
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