# Acquiring Collateral

Sai accepts two types of collateral:

* **USDC.e** (bridged USDC)
* **stNIBI** (staked Nibiru tokens)

You'll also need **NIBI** for gas fees to perform transactions on Sai.

***

## Getting NIBI (Gas Token)

NIBI is required for all transactions on Sai. You can acquire it through:

### Centralized Exchanges (CEX)

| Exchange | Link                                  |
| -------- | ------------------------------------- |
| ByBit    | [Buy NIBI](https://www.bybit.com/en/) |
| Kucoin   | [Buy NIBI](https://www.kucoin.com)    |
| Gate.io  | [Buy NIBI](https://www.gate.io)       |
| MEXC     | [Buy NIBI](https://www.mexc.com/)     |

### Decentralized Exchanges (DEX)

| DEX        | Network | Link                                                                                                                                                              |
| ---------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Oku        | EVM     | [Trade on Oku](https://oku.trade/swap?inputChain=nibiru\&inToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b\&outToken=0x0CaCF669f8446BeCA826913a3c6B96aCD4b02a97) |
| Osmosis    | WasmVM  | [Trade on Osmosis](https://app.osmosis.zone)                                                                                                                      |
| Astrovault | WasmVM  | [Trade on Astrovault](https://astrovault.io/)                                                                                                                     |

### Bridging

| Bridge   | Link                                                                                                                                                                             |
| -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Nibiru   | [Bridge](https://app.nibiru.fi/bridge)                                                                                                                                           |
| Stargate | [Bridge](https://stargate.finance/?srcChain=ethereum\&srcToken=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48\&dstChain=nibiru\&dstToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b) |

***

## Getting stNIBI (Staked Collateral)

stNIBI is Nibiru's liquid staking token and serves as collateral on Sai.

### Step 1: Acquire NIBI

Follow the steps above to get NIBI tokens.

### Step 2: Liquid Stake NIBI

1. Go to [app.nibiru.fi/stake](https://app.nibiru.fi/stake)
2. Connect your wallet (works with both EVM and WasmVM wallets)
3. Stake your NIBI to receive stNIBI

### Step 3: Cross-Chain Asset Conversion (Optional)

If you need to move stNIBI between EVM and WasmVM networks:

1. Go to [app.nibiru.fi/portfolio](https://app.nibiru.fi/portfolio)
2. Select the stNIBI asset from your table
3. Use the **FunToken** conversion to:
   * Convert stNIBI ERC20 (EVM) → stNIBI Bank Coin (WasmVM)
   * Convert stNIBI Bank Coin (WasmVM) → stNIBI ERC20 (EVM)

### Alternative: Trade stNIBI on DEX

Acquire stNIBI directly from decentralized exchanges:

| DEX        | Network | Link                                                                                                                                                              |
| ---------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Oku        | EVM     | [Trade stNIBI](https://oku.trade/swap?inputChain=nibiru\&inToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b\&outToken=0xcA0a9Fb5FBF692fa12fD13c0A900EC56Bb3f0a7b) |
| Stargate   | EVM     | [Trade stNIBI](https://stargate.finance)                                                                                                                          |
| Astrovault | WasmVM  | [Trade stNIBI](https://astrovault.io/)                                                                                                                            |
| Skip Swap  | WasmVM  | [Trade stNIBI](https://app.skip.money)                                                                                                                            |

***

## Getting USDC.e (Bridged USDC)

USDC.e is ERC20-standard USDC bridged to Nibiru.

### Bridge from Other Chains

Use these bridging protocols to get USDC.e:

| Source        | Bridge               | Link                                                                                                                                                                                       |
| ------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Base USDC     | Stargate (LayerZero) | [Bridge Base USDC](hhttps://stargate.finance/?srcChain=base\&srcToken=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\&dstChain=nibiru\&dstToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b)    |
| Arbitrum USDC | Stargate (LayerZero) | [Bridge ARB USDC](https://stargate.finance/?srcChain=arbitrum\&srcToken=0xaf88d065e77c8cC2239327C5EDb3A432268e5831\&dstChain=nibiru\&dstToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b)  |
| Avalache USDC | Stargate (LayerZero) | [Bridge AVAX USDC](https://stargate.finance/?srcChain=arbitrum\&srcToken=0xaf88d065e77c8cC2239327C5EDb3A432268e5831\&dstChain=nibiru\&dstToken=0x0829F361A05D993d5CEb035cA6DF3446b060970b) |

### Cross-Chain Asset Conversion (Optional)

If you need to move USDC.e between EVM and WasmVM networks:

1. Go to [app.nibiru.fi/portfolio](https://app.nibiru.fi/portfolio)
2. Select the USDC.e asset from your table
3. Use the **FunToken** conversion to:
   * Convert USDC.e ERC20 (EVM) → USDC bank coin (WasmVM)
   * Convert USDC bank coin (WasmVM) → USDC.e ERC20 (EVM)

***

## Quick Reference

| Collateral | Acquisition       | Staking Required | Cross-Chain Support |
| ---------- | ----------------- | ---------------- | ------------------- |
| NIBI       | CEX, DEX, Bridge  | No               | Yes (via FunToken)  |
| stNIBI     | Stake NIBI or DEX | Yes              | Yes (via FunToken)  |
| USDC.e     | Bridge or CEX     | No               | Yes (via FunToken)  |

***

## Need Help?

* Issues with bridging? Check [Wallet Setup](/guides/wallet-setup.md)
* Questions about staking? See [Nibiru Docs](https://nibiru.fi/docs)
* Having trouble? Visit [FAQ](/learn/trading/faq.md)


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