> For the complete documentation index, see [llms.txt](https://docs.o3swap.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.o3swap.com/fan-ti-zhong-wen/ice-age-mining.md).

# Ice Age Mining

## **Rules**

O3 Swap launches the Ice Age Mining started from 4 AM, 14th May 2021 (UTC). Support stable coin liquidity mining (USDT/BUSD/HUSD) and O3 mining. Only on Ethereum Mainnet currently.

**Time Period**: 500,000 Ethereum blocks in total (around 10 weeks)

**Reward Distribution Start Around**: 7 AM, 14th May 2021 (UTC)

**Claimable Rewards**: After 2000 blocks (around 3 PM, 14th May 2021 (UTC)

{% hint style="info" %}
Staked O3 is not available to unstake until the next mining period 

***Ice Age Time Period:** 500,000 Ethereum blocks in total (around 10 weeks)*
{% endhint %}

{% hint style="info" %}
Staking rewards are unlock needed. You will need to stake the UNI-LP to unlock them.

<https://docs.o3swap.com/unlock-o3>
{% endhint %}

## Cross-chain Liquidity Mining <a href="#deab" id="deab"></a>

### **1. Add liquidity to cross-chain pool**&#x20;

* Go to Hub. <https://o3swap.com/hub>. Click the "Deposit".&#x20;

![](/files/-M__RBRPw7h_3rlHAlc7)

* Connect your MetaMask.&#x20;

{% hint style="success" %}

* USDT mining: Connect to Ethereum Mainnet&#x20;
* BUSD mining: Connect to the Ethereum Mainnet + BSC&#x20;
* HUSD mining: Connect to the Ethereum Mainnet + HECO&#x20;
  {% endhint %}

![](/files/-M_dZlVH5QHgpjAs5OU9)

* Choose one or more stablecoins (USDT, BUSD, HUSD) to add the liquidity into the cross-chain pool.
* Enter the amount you want to deposit.
* Click the "Deposit" and confirm the transaction in your wallet.

![](/files/-M_dOtA8PI95rPWABVbj)

* <img src="/files/-M_doRB2ZZVvIacdZc5W" alt="" data-size="original">

{% hint style="info" %}
If this is the first time to deposit, you will require to approve the transaction first.

After the approval completed, click the "Deposit" again to proceed the transaction.
{% endhint %}

* After the transaction confirmed, you will see the USD\_LP token in the wallet.&#x20;
* The speed of adding cross-chain liquidity is proceeded by Poly Network and the corresponding blockchain network. The confirmation time would be longer than usual. You can always check the transaction process in the pop-up window.

![](/files/-MZ92nHk9nskbqNfa6HW)

![](/files/-MZ9312z5qhK63jGhczF)

{% hint style="info" %}
If you don't see the LP token in Metamask, please manually add the token contract

**USD\_LP: 0x61415f9060b1a81bbda3b79baa11acd27cddd83d**
{% endhint %}

### **2.** Stake LP To Earn O3

* Go to Vault. <https://o3swap.com/vault>.&#x20;
* Connect your MetaMask (Ethereum Mainnet).&#x20;

![](/files/-M_ddNr6p-Ev1oL3xQTo)

* Enter the LP amount you want to stake.
* Click the "Confirm" and confirm the transaction in your wallet.

![](/files/-M_deuxKul5XcSXA0oac)

* ![](/files/-M_dt0aZIIDes05Radi6)

{% hint style="info" %}
If this is the first time to stake, you will require to approve the transaction first.

After the approval completed, click the "confirm" again to proceed the transaction.
{% endhint %}

## O3 Mining  <a href="#deab" id="deab"></a>

* Go to Vault. <https://o3swap.com/vault>. Choose the "Stake Token To Earn O3"
* Connect your MetaMask (Ethereum Mainnet).&#x20;

![](/files/-M_dfupA5-ePMQCXisWR)

* Enter the O3 amount you want to stake.
* Click the "Confirm" and confirm the transaction in your wallet.

![](/files/-M_dgLIrFe5LuWcEzbkB)