# Step 1: Transition Bridge

{% hint style="warning" %}
Only if you have ATS coins on ARTIS ∑1, you have to do this step. 
{% endhint %}

When transferring coins / tokens over bridges, you need to make sure that you can access the used account address on the recipient blockchain. The simplest way is by using wallets which support both chains, so that you can see the token on the other chain right away. Recommended wallets are: 

* [Metamask](/about/wallets.md#metamask) (Browser, Android & iOS)
* [AlphaWallet](/about/wallets.md#alphawallet) (Android & iOS)
* [MyCrypto](/about/wallets.md#mycrypto-desktop) (Desktop)

### **Send ATS from ARTIS ∑1 to xDai Chain**

You have to send your ATS coins via a **mediator contract** to the xDai Chain and there you will get the xATS\_tmp (ERC20) tokens. This xATS\_tmp tokens will be received on the same address on the xDai Chain. 

{% hint style="warning" %}

* Minimum transfer amount: 10 ATS
* Gas Limit: min. 200,000 GWei

Check your gas settings for Metamask to be correct, before confirming the transaction. 
{% endhint %}

Send the desired **ATS coin** amount to the mediator contract at: `0x0b683eB188F83FA7a3243282e5d384eb4f1c3408`

![ATS --> xATS\_tmp Mediator Contract](/files/-MUri2hTTgImBJ4KRIGx)

The contract can be found via the ARTIS ∑1 blockchain explorer ([here](https://explorer.sigma1.artis.network/address/0x0b683eB188F83FA7a3243282e5d384eb4f1c3408/transactions)) and is available on Github ([here](https://github.com/lab10-coop/artis-bridge-contracts)). 

### Receive xATS\_tmp on xDai Chain

On the xDai Chain you receive xATS\_tmp token in the same amount as you have sent to the mediator contract. 

In Alphawallet you should see the xATS\_tmp token automatically, but for Metamask and MyCrypto you will have to add the token to make it visible in your wallet.

The xATS\_tmp token contract address to add the token to the wallet is: `0x49d2BB4A247E38b817E9404246DBc48Ca6707831`

The xATS\_tmp token contract can be found via the xDai Chain blockchain explorer ([here](https://blockscout.com/poa/xdai/address/0x49d2BB4A247E38b817E9404246DBc48Ca6707831/transactions)).

Additionally every account will get 0.01 xDai to pay for transaction fees.


---

# 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://docs.artis.eco/artis-2.0/artis-2.0-transition-bridge.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.