The Oracle Module has 2 core components: 1️⃣ Median and 2️⃣ OSM contracts.
1️⃣ The Median provides Maker's trusted reference price.
It maintains a whitelist of the price Feed contracts that are authorized to post price updates.
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Oracle模块有2个核心组件：1️⃣ 中位数和2️⃣ OSM合同。
1.️⃣ 中位数提供了制造商值得信赖的参考价格。
它维护有权发布价格更新的价格提要合同的白名单。
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