From 5d51aaf971e42b3a44081a683460f8ff4fd52c99 Mon Sep 17 00:00:00 2001
From: "Dr. Mia von Steinkirch"
 <1130416+F4DELEGATECALL@users.noreply.github.com>
Date: Mon, 17 Oct 2022 17:32:09 -0700
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+## 🍋 oracles
+
+<br>
+
+### tl;dr
+
+* Oracles provide a trustless way of getting extrinsic (off-chain) information.
+* They provide the some key functions such as collect data from an off-chain source, transfer the data on-chain with a signed message, and make the data available by putting it in a smart contract’s storage.
+* price oracles are any tool showing an asset's price but in context of defi 
+
+<br>
+
+---
+
+### in this repo
+
+* [TWAP oracles](twap.md)
+
+<br>
+
+----
+
+
+
+### chainlink 
+
+
+A decentralized oracle network consisting of three key smart contracts:
+
+* a reputation contract: keep track of data providers' performance.
+* an order-matching contract: selects bids from oracles using the reputation contract.
+* an aggregation contract—and an off-chain registry of data providers.
+
+
+One of the main challenges with such a decentralized approach is the formulation of the aggregation function. 
+ChainLink proposes calculating a weighted response, allowing a validity score to be reported for each oracle response.