# User Guides

Get to know how to use the oooo protocol in the cross-chain transfer scenario.

## From any chain to any chain

1. Choose the wallet you want to connect.

<figure><img src="/files/kd1p4PLX0d0hbgAnTuYT" alt=""><figcaption></figcaption></figure>

2. In the “From” and “To” fields, select the chain you want to use, enter the receiving address, and then click the “TRANSFER” button to initiate the transfer

<figure><img src="/files/ehTA2kAeLBG0DUsnRjbK" alt=""><figcaption></figcaption></figure>

## From CEX to any chain

[Tutorial: Bridge Your BTC from Binance to Layer 2](https://medium.com/@oooo-prot/the-cheapest-way-to-bridge-your-btc-from-binance-to-layer2-5e8768285f95)


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```
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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.