# Stake

The Pacman Stake module improves the capital utilization rate and maximizes asset returns for Lend users. Users can use ipTokens interest-bearing assets to stake to obtain income.

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## What are ipTokens?

* When a user supplies their assets to Pacman Finance's lending pools, ipTokens (interest-pacman Tokens) are used to keep track of the funds they have deposited as well as any interest earned.
* Each time a user supplies funds to the lending pool, they are issued a corresponding balance in ipTokens. This balance of the ipTokens is directly proportional to the stake they have in the lending pool, which accrues interest every block.
* Each lending pool has its own ipToken; for example, if a user lends USDC to the protocol, they will receive a corresponding balance of ipUSDC.

## How do ipTokens earn interest?

* Each deposit vault earns interest. However, the interest isn't distributed. Instead, simply by holding ipTokens, you'll earn the interest.
* ipTokens accumulate interest through their exchange rate; over time, each ipToken's value increases, becoming convertible into a larger amount of its underlying asset with every block, even while the number of ipTokens in your wallet stays the same.&#x20;
* Each deposit pool has its own utilization which will also reflect how much the corresponding ipTokens will appreciate over time.
* The longer a user holds ipTokens, the higher the value of those tokens appreciates. This is the accumulation of interest.
* You do not need to stake ipTokens to enjoy this price appreciation, although you will still earn it while your tokens are staked.

## How to maximize my Stake income?

oPAC protocol subsidy refers to the C\&FOO model, which alleviates the massive dumping of Staker users. The module sets Boost and Binding operations, and users can bind/unbind/replace any vePAC NFT at any time to obtain the highest income.

{% hint style="info" %}
Note: The operation of binding vePAC NFT will not affect the voting function and dividend function of the NFT
{% endhint %}