> For the complete documentation index, see [llms.txt](https://docs.udex.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.udex.one/feature/ubridge.md).

# uBridge

The uDEX protocol introduces an innovative inscription cross-chain bridge - [uBridge](https://bridge.udex.one/). It streamlines the transfer of Bitcoin BRC-20 inscriptions onto the BSC chain. This feature adeptly resolves the issue of limited liquidity for BRC-20 inscriptions in secondary markets, significantly enhancing the trading experience and reducing transaction costs. By utilizing this feature, users can effortlessly bridge their BRC-20 inscriptions, thereby gaining access to a broader trading ecosystem and fostering more dynamic market interactions.

uDEX platform ensures secure and efficient mapping of BRC-20 inscriptions. When users activate this feature, their Bitcoin chain inscriptions are securely locked within uDEX's smart contract, and corresponding v-BRC20 tokens are created on the BSC chain, maintaining a robust 1:1 relationship. This allows for the creation of liquidity pools on PancakeSwap, enabling the free exchange of v-BRC20 tokens with other tokens. When these tokens are remapped back to the Bitcoin chain, the BSC chain's v-BRC20 tokens are destroyed, ensuring a seamless and secure transaction back to the user's original Bitcoin address.

<figure><img src="/files/orhSmQYBxx5jJEEeCLmn" alt=""><figcaption></figcaption></figure>

{% content-ref url="/spaces/qSLoj8cT4wzl2Xfvt2XT/pages/BvavqinQEsGIYPR2yPhk" %}
[How to Trade After Cross-Chain?](/tutorial/how-to-trade-after-cross-chain.md)
{% endcontent-ref %}

##