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.
https://recruit.gmo.jp/engineer/jisedai/blog/defi_practice/
For more information, refer to "Complete understanding of Oracle" in Easy DeFi.
Oracle
What is Oracle in Blockchain? | block-chain.jp by Consensus Base
Ethereum and Oracles | Ethereum Foundation Blog
Calling an external API from Solidity (Oracle Pattern) - Qiita
#Technical Crypto Hands-Ontkgshn.icon*3
This article by shingen_crypto is also quite easy to understand.
【Special Feature Column】What is Oracle in Blockchain? | Virtual Currency Column | HEDGE GUIDE
"Oracle" refers to referencing data, and the most representative example is price data for tokens, etc.
"Oracle" refers to referencing data, and the most representative example is price data for tokens, etc.
https://gyazo.com/299449e7c73ec2b5f8ca53ab88e19235
The basic structure of Chainlink's Price Reference Oracle
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.
Oracle for Real-World Events
https://gyazo.com/f69ff8ae6b2ad8fdf28a50195f2ded7b
Oracles used for staking, futarchy, and prediction markets or insurance are difficult to determine what to consider as the result.
Decentralization of price reference oracles
Understanding the basics, mechanisms, and risks of oracles | HashHub Research
I laughed at the example on Wikipedia. lol
https://gyazo.com/4bbe376c24dfd49cde7b15e2a429c9e7
Hardware Oracle
https://gyazo.com/07f80f44bf9da535b0c61267fb04b7e2