# Cronos zkEVM Bridge

{% hint style="danger" %}
**Notice: Cronos zkEVM is being sunset, please** [**bridge out your assets**](/for-users/cronos-zkevm-bridge.md) **before the network is fully decommissioned.**
{% endhint %}

The Cronos zkEVM bridge enable users to bridge ERC20 tokens from Ethereum (L1) to Cronos zkEVM (L2), and back. 

**The bridge is available at** [**https://zkevm.cronos.org/bridge**](https://zkevm.cronos.org/bridge)**.** 

It will only support selected tokens which have been originally created on Ethereum. The list of allowed tokens will expand over time.\
\
**In the page, we cover:**

* [#how-to-withdraw-zkcro-for-cro](#how-to-withdraw-zkcro-for-cro "mention")
* [#how-to-withdraw-veth-for-eth](#how-to-withdraw-veth-for-eth "mention")
* [#how-to-withdraw-vusd-for-dai](#how-to-withdraw-vusd-for-dai "mention")

## Bridge User Guides

### How to withdraw zkCRO for CRO

{% hint style="info" %}
Before we start, make sure you have enough zkCRO in your wallet as gas fee during the journey. And here is [the high-level steps](#how-to-withdraw-zkcro-for-cro) for overview.
{% endhint %}

#### Bridging zkCRO from Cronos zkEVM to Cronos EVM

1. Head to <https://zkevm.cronos.org> and connect your wallet.

<figure><img src="/files/eTI0goagF2mbizUVizQE" alt=""><figcaption></figcaption></figure>

2. On the “Withdraw” tab, in the “FROM” field select zkCRO and LCRO will automatically appear in the “TO” field. Enter the amount of zkCRO to bridge. *Keep in mind that zkCRO is needed to pay the gas fees*.

<figure><img src="/files/ZOGpDXS74eqzlgVYhGbF" alt=""><figcaption></figcaption></figure>

3. When the ’Withdraw‘ button is clicked, a prompt modal and the wallet approval window will automatically pop up. Kindly confirm transaction for the bridge to spend your zkCRO.

<figure><img src="/files/Ek3piypErKa2Ux45XVhX" alt=""><figcaption></figcaption></figure>

4. On the “Pending Withdrawals” tab, you could see the pending withdrawals is listed. You need wait for almost 48 hours to start to claim zkCRO on Ethereum mainnet.

<div align="center"><figure><img src="/files/Z2LpN2khzmtYjcQZWvCb" alt=""><figcaption></figcaption></figure></div>

5. After almost 48 hours, we could see 'proceed' tag alongside.  Click it to start to claim zkCRO on Ethereum mainnet.

<figure><img src="/files/mdHFX4itG2czL4uK1SMR" alt=""><figcaption></figcaption></figure>

6. A wallet approval window pops up. Click '**Confirm**' button to approve the transaction.

<div align="left"><figure><img src="/files/byHLmdizLqTOzSVEnT1Q" alt=""><figcaption></figcaption></figure></div>

&#x20;     Now, you should see the target amount of zkCRO on your wallet on Ethereum mainnet.

7. Followingly, go ahead to withdraw zkCRO from Ethereum to Cronos EVM, wherein zkCRO will be finally wrapped into LCRO on Cronos EVM.

<div align="center"><figure><img src="/files/L7bo9lDyCb4tZ2BTlHpB" alt=""><figcaption></figcaption></figure></div>

&#x20;      Now, you could see the target amount of LCRO on Cronos EVM, and you could choose to 'Unstake'/'Sell' LCRO for CRO.

<figure><img src="/files/XCWCNVQAyPxnLgGDonSG" alt="" width="238"><figcaption></figcaption></figure>

### How to withdraw vETH for ETH

{% hint style="info" %}
Before we start, make sure you have enough zkCRO in your wallet as gas fee during the journey.
{% endhint %}

1. Head to <https://zkevm.cronos.org> and connect your wallet.

<figure><img src="/files/X6xenc6eyhC19iULennl" alt=""><figcaption></figcaption></figure>

2. On the “Withdraw” tab, in the “FROM” field select vETH and ETH will automatically appear in the “TO” field. Then enter the amount of vETH to bridge. *Keep in mind that zkCRO is needed to pay the gas fees*.

<figure><img src="/files/vqpcamoij7vTYRD2Z7nl" alt=""><figcaption></figcaption></figure>

3. When the ’Withdraw‘ button is clicked, an prompt modal and the wallet approval window will automatically pop up. Kindly confirm transaction to approve and unwrap your vETH.

<figure><img src="/files/v6FK8tJVV66TfES6hpjd" alt=""><figcaption></figcaption></figure>

&#x20;     After the transaction is confirmed, vETH is unwrapped into ybETH.

4. Now, a new wallet approval window will automatically pop up. Kindly confirm transaction to approve and withdraw your ybETH.

<figure><img src="/files/pbJ5n5QKu34H1A3WXHaJ" alt=""><figcaption></figcaption></figure>

5. On the “Pending Withdrawals” tab, you could see the pending withdrawals is listed.

<figure><img src="/files/sJSVMH1MgY2yup4LhMkX" alt=""><figcaption></figcaption></figure>

6. After almost 48 hours, we could see 'proceed' tag alongside, meaning we could claim  and request for ETH.

<figure><img src="/files/wkqkOj2mL71wQJkqcN4H" alt=""><figcaption></figcaption></figure>

7. Kindly hit 'proceed' button, and later confirm the two transactions *respectively* on the wallet approval windows.

<figure><img src="/files/MoKtsVS1QT0fUzGOPyw5" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/62Z8Z5ZdF5aCvEHZE9sP" alt=""><figcaption></figcaption></figure>

8. From now, we need wait for almost 1\~10 days for the final step to '**Claim ETH**'.

<figure><img src="/files/D1t0lBK9qrJ8g1orlGJd" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/Zrgk7Gp5dpTbKiDLwYwJ" alt=""><figcaption></figcaption></figure>

9. After 1\~10 days, we could finally claim the ETH back to our wallet. Kindly hit 'Claim ETH' button to start.

<figure><img src="/files/vZaENxMyE0hmFO8Wti8J" alt=""><figcaption></figcaption></figure>

10. The wallet approval window will automatically pop up. Kindly confirm transaction to approve it.

<figure><img src="/files/cjBAqqz92jkhVWGaz7bR" alt=""><figcaption></figcaption></figure>

&#x20;     You should now see an additional amount of ETH in your wallet on Ethereum mainnet.

### How to withdraw vUSD for DAI

{% hint style="info" %}
Before we start, make sure you have enough zkCRO in your wallet as gas fee during the journey.
{% endhint %}

1. Head to <https://zkevm.cronos.org> and connect your wallet.

<figure><img src="/files/1lF3wjrUHiqBNk94kyNY" alt=""><figcaption></figcaption></figure>

2. On the “Withdraw” tab, in the “FROM” field select vUSD and DAI will automatically appear in the “TO” field. Then enter the amount of vUSD to bridge. *Keep in mind that zkCRO is needed to pay the gas fees*.

<figure><img src="/files/a0X6I99HeKlk9yepbWDo" alt=""><figcaption></figcaption></figure>

3. When the ’Withdraw‘ button is clicked, an prompt modal and the wallet approval window will automatically pop up. Kindly confirm transaction to approve and unwrap your vUSD.

<figure><img src="/files/Wg4viu73GlcEkdypOQrm" alt=""><figcaption></figcaption></figure>

&#x20;     After the transaction is confirmed, vUSD is unwrapped into ybUSD.

4. Then, a new wallet approval window will automatically pop up. Kindly confirm transaction to approve and withdraw your ybUSD.

<figure><img src="/files/ZdN7TUzzBAtJxySTYYwt" alt=""><figcaption></figcaption></figure>

5. On the “Pending Withdrawals” tab, you could see the pending withdrawals is listed.

<figure><img src="/files/O5nKAfqi4154wfvHVseB" alt=""><figcaption></figcaption></figure>

6. After almost 48 hours, we could start to claim ybUSD and request for DAI by clicking 'Proceed' button.

<figure><img src="/files/mRx299miGzqqrzTKtIVp" alt=""><figcaption></figcaption></figure>

7. Then the wallet approval window will automatically pop up for 'Claim ybUSD' on Ethereum mainnet. The wallet click 'Confirm' to approve the transaction.

<figure><img src="/files/Ws2CvsHAMdxxzoi8YNsk" alt=""><figcaption></figcaption></figure>

8. Click 'Confirm' to approve the transaction to finally claim DAI.

<figure><img src="/files/8NkidjxJqAVvii5Gt6OT" alt=""><figcaption></figcaption></figure>

&#x20;     Now you could see the target amount of DAI has been shown on your wallet.

<figure><img src="/files/CDZxYAgIgwh1YG3Xrbw2" alt="" width="242"><figcaption></figcaption></figure>


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