> For the complete documentation index, see [llms.txt](https://nebula-18.gitbook.io/nebula/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nebula-18.gitbook.io/nebula/tech-overview/nebula-technology-overview/risk-management-and-security/decentralized-oracles.md).

# Decentralized Oracles

Accurate and secure price feeds are critical for collateral valuation.

#### **Data Integrity**

Nebula leverages decentralized oracle networks, such as **Chainlink**, to fetch real-time, tamper-proof asset prices.

#### **Multi-Node Verification**

Price feeds are verified by multiple independent nodes to prevent data manipulation.

#### **Fallback Mechanisms**

By aggregating data from various oracles, Nebula reduces reliance on any single source and enhances data reliability.