# Introduction

Brighter is a yield engine built on top of [Lighter Protocol](https://lighter.xyz/), connecting stablecoin holders and LIT holders through an interconnected dual-pool system.

## The Problems We Solve

**For Stablecoin Holders**

* Want [LLP (Lighter Liquidity Provider)](https://lighter.xyz/) yields, but must stake LIT to unlock capacity (1 LIT = 10 USD)
* Fragmented experience across multiple interfaces

**For LIT Holders**

* LIT's capacity utility goes to waste without stablecoins to deposit
* Missing potential earnings from unused capacity

## The Dual-Pool System

Brighter solves this through two interconnected pools:

| Pool                 | Users              | Action       | Earn                                   |
| -------------------- | ------------------ | ------------ | -------------------------------------- |
| **sUSDb Vault**      | Stablecoin Holders | Deposit USDC | LLP yield + Brighter Points            |
| **LIT Staking Pool** | LIT Holders        | Stake LIT    | LIT Pool Yield Share + Lighter rewards |

### How They Connect

{% stepper %}
{% step %}

### LIT Holders stake LIT

Creates deposit capacity.
{% endstep %}

{% step %}

### Stablecoin Holders deposit USDC

Uses capacity; funds go to LLP.
{% endstep %}

{% step %}

### LLP generates yield

Yield comes from trading fees.
{% endstep %}

{% step %}

### Yield is distributed

Stablecoin holders get net yield; LIT holders get Yield Share.
{% endstep %}
{% endstepper %}

## Tokens

| Token     | What It Is                                                                              | Who Uses It        |
| --------- | --------------------------------------------------------------------------------------- | ------------------ |
| **USDC**  | Stablecoin you deposit                                                                  | Stablecoin Holders |
| **sUSDb** | Yield-bearing token received when depositing. Value increases as LLP generates returns. | Stablecoin Holders |
| **LIT**   | Lighter's token. Stake on Brighter to earn LLP Yield Share.                             | LIT Holders        |

## Key Features

* **Dual-Pool Yield Engine** — Two pools that match stablecoin depositors with LIT capacity providers.
* **Dynamic Yield Share Rate** — Adjusts based on utilization (0–80%) to balance supply and demand. All yield share is distributed to the LIT Staking Pool.
* **Brighter Points** — Earn points based on your participation on Brighter.

## Daily Settlement

Both pools settle **daily at 7:00 UTC** (\~10 minutes):

{% stepper %}
{% step %}

### Pause

Temporarily pause all deposit/withdraw/stake/unstake requests.
{% endstep %}

{% step %}

### Calculate & Distribute

Calculate previous day's PnL, distribute yield (if profitable), update sUSDb exchange rate.
{% endstep %}

{% step %}

### Process Requests

Execute all pending deposits/withdrawals/stakes/unstakes to Lighter.
{% endstep %}

{% step %}

### Resume

Re-open sUSDb Vault and LIT Staking Pool for new requests.
{% endstep %}
{% endstepper %}

Go Brighter. Earn Lighter.


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