> For the complete documentation index, see [llms.txt](https://docs.apro.com/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apro.com/en/data-pull-evm-chain/price-feed-id.md).

# Price Feed ID

**For a guide on how to use the APRO Data Pull, check out the Data Pull** [**Getting Started**](https://docs.apro.com/en/data-pull/getting-started)**.**

### APRO Price Feed Support Principles <a href="#apro-price-feed-support-principles" id="apro-price-feed-support-principles"></a>

APRO provides Price Feeds (**BTC/USD**, **ETH/USD**, **USDT/USD**, **USDC/USD**, **SOL/USD**) calculated based on the **median price** from multiple **authoritative data sources** to ensure **fairness** and **stability**.

APRO provides RWA Feeds calculated based on the **median price** from multiple **authoritative data sources** to ensure **fairness** and **stability**.

**Data Source Overview**\
Our data sources include globally leading exchanges and professional financial data providers, such as:

* Coinbase
* Binance
* OKEx
* Bybit
* HTX
* KuCoin
* Gate.io
* MEXC
* Tiingo
* New Change FX
* All Tick
* Alpha Vantage
* Finn Hub
* Market Stack
* Polygon

**Data Processing Methodology**\
To maximize data reliability, we adhere to the principle of median price calculation, eliminating outliers and invalid data to ensure that price feeds are not influenced by extreme values.