# Oracles and Cross-Chain Interoperability

<figure><img src="https://1136955223-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSDEn8Abdjo8l8Nioue3a%2Fuploads%2Fg4ThuG1JfDUx2QoNbcmW%2Fimage.png?alt=media&#x26;token=f3e89c56-0150-4e58-8b40-9d02e8607b20" alt=""><figcaption></figcaption></figure>

### a. Oracles for minting/redeeming <a href="#b811" id="b811"></a>

* Arbitrum Pricefeeds: Chainlink for wstETH and rETH, contract variable for gmdETH, and LayerZero-based oracle for sfrxETH
* ETH Pricefeed: directly from native contracts

### b. Cross-chain minting <a href="#id-2caf" id="id-2caf"></a>

Using layer zero tech, we will enable users to mint directly on Ethereum to receive gETH on Arbitrum and vice-versa

As ease of use has been one of the unique selling points of projects on GMD Ecosystem, we will strive to make gETH as accessible to commercial users as possible.

### c. Built-in instant bridging <a href="#id-2caf" id="id-2caf"></a>

As such, ETH minting will be made easy with a contract that works on Ethereum mainnet, using Layer 0 to instantly bridge gETH to Arbitrum in your wallet. This function is also available for LSD holders on Arbitrum too.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://gmd-protocol.gitbook.io/gnd-protocol/geth/oracles-and-cross-chain-interoperability.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.