> For the complete documentation index, see [llms.txt](https://docs.overnight.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.overnight.fi/advanced/oracles.md).

# Oracles

Overnight uses the [industry standard decentralized oracles Chainlink](https://docs.chain.link/data-feeds) as its primary oracle which provides highly secure and reliable, tamper-resistant data feeds. 

Chainlink oracles are used across our Base and Arbitrum instances:

| Asset               |
| ------------------- |
| WETH-USD (Base)     |
| USDC-USD (Base)     |
| AERO-USD (Base)     |
| USDC-USD (Arbitrum) |
| USDT-USD (Arbitrum) |
| WETH-USD (Arbitrum) |
| WBTC-USD (Arbitrum) |