> ## Documentation Index
> Fetch the complete documentation index at: https://rain-sandbox-trial.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Mint Test Tokens for Collateral (Sandbox)

### Supported Networks and Contract Addresses

Below is a table with the supported networks and the contract addresses for the`rUSD` test token. Click on the contract address to view it on the block explorer.

| Chain                   | Environment | Contract                                                                                                                                         |   |
| ----------------------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | - |
| Ethereum Sepolia        | **Testnet** | [0x6CE0D9aEBB683AbbEc9bfbF82D35d4E92CfEC12B](https://sepolia.etherscan.io/address/0x6ce0d9aebb683abbec9bfbf82d35d4e92cfec12b)                    |   |
| Optimism Sepolia        | **Testnet** | [0x915F8c4a8b9fE793b3185c4186F716d7e5D891b6](https://sepolia-optimistic.etherscan.io/address/0x915F8c4a8b9fE793b3185c4186F716d7e5D891b6#code)    |   |
| Arbitrum Sepolia        | **Testnet** | [0xd116d4752fc50D660FB5b5c801448Ae84B4937bc](https://sepolia.arbiscan.io/address/0xd116d4752fc50D660FB5b5c801448Ae84B4937bc)                     |   |
| Base Sepolia            | **Testnet** | [0x10b5Be494C2962A7B318aFB63f0Ee30b959D000b](https://sepolia.basescan.org/address/0x10b5Be494C2962A7B318aFB63f0Ee30b959D000b#code)               |   |
| Avalanche Fuji          | **Testnet** | [0xBaFc625Fb7311Ec83D9cf4587e9D373d2ff93af8](https://testnet.snowtrace.io/address/0xBaFc625Fb7311Ec83D9cf4587e9D373d2ff93af8)                    |   |
| Zk Sync Sepolia         | **Testnet** | [0xAe0E2f62379761044841Ce252Ad16247450a2d68](https://sepolia.explorer.zksync.io/address/0xAe0E2f62379761044841Ce252Ad16247450a2d68#transactions) |   |
| BNB Smart Chain Testnet | **Testnet** | [0xdEE7360FA7B843D9312971d80e8c9Ff543AC33D1](https://testnet.bscscan.com/address/0xdEE7360FA7B843D9312971d80e8c9Ff543AC33D1)                     |   |

### How to Mint rUSD on Testnets

#### EVM

To mint `rUSD` test tokens, follow these steps:

* Navigate to the relevant block explorer link above for the desired testnet.
* Select **Contract**
* Select the **Write Contract** option and connect your wallet via the **Connect to Web3** button.
* Locate the `mint` function, then specify:
  * `_amountDollars_Max100` - the amount of test tokens you want to mint (*Max 100 per transaction*)
* Click **Write** and verify that the tokens appear in your wallet after the transaction is confirmed.

#### Solana

Go to the [GitHub repository](https://github.com/SignifyHQ/mint-rusd-solana) and follow its instructions.

#### Using Minted rUSD as Collateral

After minting, send the `rUSD` test tokens to your authorized user account's deposit address as outlined in the [Add Collateral to Your Account](/docs/partner-managed-programs#add-collateral-to-your-account) section. Your credit limit will be updated shortly after the transaction is processed.