<PageSchema path="/arc-mainnet" title="Arc Mainnet DEX & Wallet Guide" description="Use Biscotti Finance on Arc Mainnet. Connect your wallet, fund it with USDC, trade tokens and launch a token with locked liquidity." />

# Biscotti Finance on Arc Mainnet

Biscotti Finance is a decentralized exchange (DEX) and token launchpad on
**Arc Mainnet**. Use it to swap tokens, provide concentrated liquidity, or
launch a new token paired with USDC.

Arc is an EVM-compatible Layer 1 blockchain that uses USDC for gas. Mainnet
launched on September 16, 2026. See the
[official Arc Mainnet announcement](https://www.arc.io/blog/arc-economic-os-internet).

## Connect your wallet to Arc

Open [Biscotti Finance](https://biscotti.finance), connect your wallet, and
select Arc Mainnet. If your wallet needs a custom network, use these details:

| Setting | Arc Mainnet |
| --- | --- |
| Network name | Arc |
| Chain ID | `5042` |
| RPC URL | `https://rpc.mainnet.arc.io` |
| Gas currency | USDC |
| Block explorer | [Arc Explorer](https://explorer.arc.io) |

These settings come from the
[Arc wallet connection guide](https://docs.arc.io/arc/references/connect-to-arc).
Arc's native gas balance uses 18 decimals; applications reading an ERC-20
token balance should use that token's contract interface.

## Fund your wallet with USDC

Keep USDC on **Arc Mainnet** to pay for transactions. A USDC balance on another
network is a separate balance. Check that your funding provider supports Arc
and that the destination is your wallet address.

[Arc Portal](https://portal.arc.io) provides wallet funding and ecosystem
discovery. Its [official getting-started guide](https://www.arc.io/blog/arc-portal-the-easiest-place-to-get-started-on-arc)
explains the available funding flows. Testnet faucet tokens are for testing
and cannot fund mainnet transactions.

## Trade tokens on Biscotti

1. Open the Biscotti app on Arc Mainnet and choose **Swap**.
2. Select the input and output tokens. Use the [Arc token guide](/arc-tokens)
   and [contract addresses](/developers/addresses) to check the assets.
3. Enter an amount and review the quote, price impact, and minimum received.
4. Approve the input token if prompted, then confirm the swap.

A token needs a pool with available liquidity for a trade to execute. Read
[how swaps work](/swap) for fees, routing, and slippage, or explore
[concentrated liquidity](/concentrated-liquidity) to provide liquidity yourself.

## Launch a token on Arc Mainnet

The [Biscotti token launchpad](/launchpad) creates a token and its USDC pool
in one transaction. Each launch has a fixed supply of one billion tokens,
with the liquidity positions held in a vault that has no withdrawal function.

Choose a name, symbol, [launch curve](/launchpad/curves), and
[creator fee mode](/launchpad/fees), then confirm the launch. The launch fee
is 1 USDC plus gas. An opening buy is optional.

## Mainnet and testnet availability

| Product | Arc Mainnet (`5042`) | Arc Testnet (`5042002`) |
| --- | --- | --- |
| Concentrated liquidity and V3 swaps | Available | Available |
| Token launchpad | Available | Available |
| Stable pools | Planned | Available |
| BSCT and farms | Planned | Available |

Deployment details are maintained in [Contract Addresses](/developers/addresses)
and the [Roadmap](/roadmap). To try the protocol with test tokens, follow the
[Arc Testnet quick start](/quick-start).

## Common questions

### Do I need an ARC token to pay gas?

Arc uses USDC for gas. You do not need BSCT to submit an Arc transaction.

### Where can I find tokens on Arc?

Start with [Arc tokens and contract addresses](/arc-tokens), then check the
app's token and pool information for available markets.

### Does using Biscotti qualify me for an Arc airdrop?

Trading or launching a token does not establish eligibility for a separate
reward program. Read [Arc airdrop questions and reward rules](/arc-airdrop)
for the distinction between protocol rewards and airdrop announcements.