> ## Documentation Index
> Fetch the complete documentation index at: https://www.diadata.org/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Proof of Reserve

> DIA's xProof feeds enable DeFi protocols to support illiquid assets through a pricing approach that accounts for the collateral ratio. 

This system allows for more accurate and fair pricing, supporting various DeFi use cases like lending, borrowing, money markets, options, and helps access idle total value locked (TVL) in iliqd assets.

Browse all data feeds that DIA's data library currently supports:

<Card title="xProof Data Feeds | DIA App" href="https://www.diadata.org/app/liquid-staking/" icon={<img className="m-0" src="https://mintcdn.com/diadata/qIgjiltsbRJuXYkF/images/data-products/favicon-new.png?fit=max&auto=format&n=qIgjiltsbRJuXYkF&q=85&s=fe59a4e7cd8a55a40ced07fd7cb12e68" />} horizontal />

## Learn More

<CardGroup>
  <Card title="Pricing Methodology" href="/docs/nexus/reference/pricing-methodologies/lst-fair-price" icon="chart-line" iconType="solid" horizontal />

  <Card title="Request Oracle" href="/docs/how-to-guides/request-a-custom-oracle" icon="circle-plus" horizontal />
</CardGroup>