# How to achieve cross-chain from Bitcoin to layer 2

Marble Layer2 was designed with a universal model from the beginning, supporting efficient bidirectional cross-chain capabilities between Bitcoin and Marble Layer2 for assets like BTC, inscriptions, tokens, and NFTs.

Marble Layer2 offers an official web-based cross-chain bridge tool that is compatible with popular plugin wallets such as Unisat and Metamask. This allows entry-level users to easily achieve bidirectional cross-chain transactions between Bitcoin and Marble Layer2 without the necessity to understand the underlying principles of the cross-chain bridge through a simple web interface.


---

# 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://marblechain.gitbook.io/marble-whitepaper/marble-chain-btc-layer2/how-to-achieve-cross-chain-from-bitcoin-to-layer-2.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.
