# 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)**.**

### **Verifier Proxy Address**

<table><thead><tr><th width="146">Chain</th><th>Verifier Proxy Address</th></tr></thead><tbody><tr><td><strong>Bitlayer Mainnet</strong></td><td><ul><li><strong>VerifierProxy:</strong> 0x71452648E564E13632A48d32e5DaCfbaD9a3d4cD</li><li><strong>Valueless_Test Token:</strong> 0x48Ee5E7E27A5058eBf74c8Bb6A2DD1E6176A84a1</li><li><strong>WBTC</strong>(<a href="https://docs.bitlayer.org/docs/Build/DeveloperResources/Contracts/#contract-addresses-mainnet">Bitlayer deployment</a>)<strong>:</strong> 0xfF204e2681A6fA0e2C3FaDe68a1B28fb90E4Fc5F</li></ul></td></tr><tr><td><strong>HashKey Mainnet</strong></td><td><ul><li><strong>VerifierProxy:</strong> 0x2E3CBF148322be11F90209fF4A533566199c81aa</li><li><strong>Valueless_Test Token:</strong> 0x9FCf378000Ba8277b9d6d52c83BdE4eEB9Cd0DEE</li><li><strong>WHSK</strong>(<a href="https://docs.hsk.xyz/build-on-hashkey-chain/token-contracts">HashKey deployment</a>)<strong>:</strong> 0xB210D2120d57b758EE163cFfb43e73728c471Cf1</li></ul></td></tr><tr><td><strong>Eni Mainnet</strong></td><td><ul><li><strong>VerifierProxy:</strong> 0x80C02e85B367AA128CF00A11dF67eBc423e1cd00</li><li><strong>Valueless_Test Token:</strong> 0x90217f167e95d5705C6387ba15F03eEA480A22C2</li><li><strong>WEGAS</strong>(<a href="https://scan.eniac.network/address/0x6D1e851446F4D004AE2A72F9AfEd85e8829A205E">Eni deployment</a>)<strong>:</strong> 0x6D1e851446F4D004AE2A72F9AfEd85e8829A205E</li></ul></td></tr></tbody></table>

### **Mainnet Price Feeds**

<table><thead><tr><th width="205">Feed</th><th>Information</th></tr></thead><tbody><tr><td><strong>BTC/USD</strong></td><td><ul><li><strong>ID:</strong> 0x0003665949c883f9e0f6f002eac32e00bd59dfe6c34e92a91c37d6a8322d6489</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Bitlayer | HashKey | Eni</li></ul></td></tr><tr><td><strong>ETH/USD</strong></td><td><ul><li><strong>ID:</strong> 0x0003555ace6b39aae1b894097d0a9fc17f504c62fea598fa206cc6f5088e6e45</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Bitlayer | HashKey | Eni</li></ul></td></tr><tr><td><strong>USDT/USD</strong></td><td><ul><li><strong>ID:</strong> 0x00039a0c0be4e43cacda1599ac414205651f4a62b614b6be9e5318a182c33eb0</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Bitlayer</li></ul></td></tr><tr><td><strong>USDC/USD</strong></td><td><ul><li><strong>ID:</strong> 0x00034b881a0c0fff844177f881a313ff894bfc6093d33b5514e34d7faa41b7ef</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Bitlayer</li></ul></td></tr><tr><td><strong>Valueless_Test/USD</strong></td><td><ul><li><strong>ID:</strong> 0x000369f643e4e5d9b9d04863249c07c15937d0b36af803dd8d213827b0badd5c</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Bitlayer </li></ul></td></tr><tr><td><strong>BNB/USD</strong></td><td><ul><li><strong>ID:</strong> 0x00039630e8b9343f7fccdecf67bf1a59fe8d2b58e4e8d3246a74f5cd6d6fed5d</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Eni</li></ul></td></tr><tr><td><strong>SOL/USD</strong></td><td><ul><li><strong>ID:</strong> 0x000343ec7f6691d6bf679978bab5c093fa45ee74c0baac6cc75649dc59cc21d3</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Eni</li></ul></td></tr><tr><td><strong>XPR/USD</strong></td><td><ul><li><strong>ID:</strong> 0x0003ef626e0e51af00f547361de8015348d47d9189f1c12c69297dbe06e98bb5</li><li><strong>Decimals:</strong> 18</li><li><strong>Feed Type:</strong> Crypto</li><li><strong>Support Chain:</strong> Eni</li></ul></td></tr></tbody></table>

### 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.


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