# Challenging

### What is challenging?

Challenging an Ante Test expresses belief that the tested guarantee could/will fail.

You will pay "decay" fees to stakers over time to challenge a test.

However, if the test fails, you can claim a portion of staked funds as a reward.

<figure><img src="/files/UxijJ909XhyIUwqsXniO" alt=""><figcaption><p>Failed tests reward challengers for identifying risk in the system</p></figcaption></figure>

### How does decay work?

Your challenged funds will undergo continuous decay over time (by default, this is 100% per year). Some amount of this may be claimed by the test author; the rest is allocated to stakers.

<figure><img src="/files/Rx67BidoYD7bDBbhEboM" alt=""><figcaption></figcaption></figure>

### How do payouts work?

Challengers in a pool can check the underlying test at any point. If the test fails, the pool is locked and staker funds can be claimed by challengers.

5% of total staked balance are allocated to the challenger that made the failing test check. The remaining 95% of staker balance is distributed amongst all eligible challengers:

$$
reward \approx your,challenge + \left(\frac{your,challenge}{total,challenge} \right) total,stake \cdot 0.95
$$

#### Example:

You have 0.5 WETH challenged in a test when another challenger triggers test failure. Staker balance is 20 WETH and total challenger balance is 1 WETH.

$$
\begin{align\*} claimable,reward &= 0.5\text{ WETH} + \left(\frac{0.5\text{ WETH}}{1\text{ WETH}} \right) 20\text{ WETH} \times 0.95 \ &= 10\text{ WETH} \end{align\*}
$$

{% hint style="info" %}
Tip: Don't want to do math? Each pool has a "payout floor" like 1:10. This serves as a soft floor for potential payout on test failure: for a 1:10 payout floor, for every 1 ETH you challenge you could potentially get 10 ETH on test failure.
{% endhint %}


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