Oracle
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An oracle in blockchain refers to a third-party service that provides external information to smart contracts. It plays a role in connecting the blockchain with the outside world.
For more information, refer to "Complete understanding of Oracle" in Easy DeFi. https://gyazo.com/299449e7c73ec2b5f8ca53ab88e19235
In addition, in Report by government agencies on crypto, various price reference oracles are provided and used, such as oracles that provide weighted average prices over a certain period of time instead of real-time prices, or specific platforms that provide their own price reference oracles to the outside world. https://gyazo.com/f69ff8ae6b2ad8fdf28a50195f2ded7b
I laughed at the example on Wikipedia. lol
https://gyazo.com/4bbe376c24dfd49cde7b15e2a429c9e7
https://gyazo.com/07f80f44bf9da535b0c61267fb04b7e2