> For the complete documentation index, see [llms.txt](https://docs.mofo.gg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mofo.gg/chains.md).

# Chains

MoFo runs on four chains. You have one account, one set of settings and one follow list, but each chain has its own currency, launchpad and quirks.

|                          | ◎ Solana                    | 🟡 BSC                      | 🟢 Robinhood Chain             | 🔵 Arc                              |
| ------------------------ | --------------------------- | --------------------------- | ------------------------------ | ----------------------------------- |
| **Native coin (gas)**    | SOL                         | BNB                         | ETH (on Robinhood Chain)       | **USDC**                            |
| **Stablecoin**           | USDC                        | USDC (Binance-Peg)          | USDG                           | USDC (the same balance as your gas) |
| **Deposit**              | SOL or USDC                 | BNB or Binance-Peg USDC     | ETH or USDG                    | USDC                                |
| **Your address**         | Solana address              | `0x…` EVM address           | the **same** `0x…` address     | the **same** `0x…` address          |
| **Launchpad**            | pump.fun                    | Flap / four.meme            | pons                           | none                                |
| **Explorer in receipts** | Solscan                     | BscScan                     | Robinhood Chain Blockscout     | A/X Explorer (arcexplorer.org)      |
| **Priority fee tiers**   | yes                         | yes: 1× / 1.5× / 2× gas bid | no effect                      | yes: 1× / 1.5× / 2× gas bid         |
| **Sandwich protection**  | private route               | private relay               | not needed (no public mempool) | **none** (public mempool)           |
| **Fee reserve**          | small SOL reserve kept back | gas reserve in BNB          | gas reserve in ETH             | gas reserve in USDC                 |

## One EVM address, three chains

Your BSC, Robinhood and Arc wallets share the same key and the same `0x` address. What changes is the **network** you send on:

* BNB sent on BNB Smart Chain lands in your BSC balance.
* ETH sent on Robinhood Chain lands in your Robinhood balance.
* USDC sent on Arc lands in your Arc balance.

The deposit screen shows a separate block for each chain, and each block names the assets it accepts. **Sending on another chain, sending USDT, or sending a bridged USDC variant is not credited as the stablecoin.**

**ETH sent on Ethereum mainnet does not arrive on Robinhood Chain.** Send on Robinhood Chain itself, or bridge into it, for example with `/bridge`. See [Wallet & funding](/wallet-and-funding.md).

## Arc

Arc is an EVM chain where **the gas coin is USDC**. Your whole Arc balance is dollars. There is no separate native coin to price, and nothing to wrap or unwrap. What this means for you:

* **Funding.** Send USDC on Arc to your `0x` address. That one balance pays for your trades and for network fees.
* **Gas reserve.** The bot keeps back enough USDC for a sell's own network fee and won't use it for buys. `/balance` shows it as "Reserved for gas: … USDC".
* **No launchpad.** No Arc coin counts as a launchpad coin. If **Launchpad-only** is on for an Arc follow, including when the follow inherits 🪙 Pump-only from your account, **every Arc buy is skipped**. The curve-stage filter has no effect on Arc. See [Following traders](/following-traders.md).
* **Priority fee applies.** Normal / Fast / Turbo multiply your gas bid 1× / 1.5× / 2×, paid in USDC. Custom counts as Normal.
* **No sandwich protection.** Arc has no private send route, so trades are sent publicly. Keep your slippage limits tight. See [Trade settings](/trade-settings.md).
* **Receipts** link to A/X Explorer ("View on Explorer").
* Withdrawals, `/bridge` and EVM key export all work on Arc.

## Following a trader across chains

You follow a trader **per chain**. When a handle resolves to wallets on more than one chain, or when you paste a `0x` address, the wizard offers `SOL only`, `BNB only`, `Robinhood only`, `Arc only` (whichever apply) and `All (N)`. The bot writes one follow per chain you pick, each with its own settings. In your list, a follow's chain shows as a badge (`[BNB]`, `[Robinhood]`, `[Arc]`). Solana follows have no badge.

Positions and position counts are kept **per chain**: a Robinhood position never uses up a BSC or Arc follow's allowance.

## What is different on the EVM chains

* **Gas reserve.** The bot keeps enough BNB, ETH or USDC back to pay for a sell's own gas, and refuses buys that would dip into it. `/balance` shows the amount as "Reserved for gas" and warns you when you are below it.
* **Priority fee** works differently on each chain. On BSC and Arc, the Normal / Fast / Turbo tiers multiply the gas bid 1× / 1.5× / 2×. On Robinhood Chain there is nothing to outbid, because the sequencer is first-come-first-served, so the tier changes nothing there. See [Trade settings](/trade-settings.md).
* **Sandwich protection.** Solana trades go through a private route, and BSC trades go through a private relay. Robinhood Chain has no public mempool, so there is nothing to protect against. Arc has no private route, so its trades are public.
* **Launchpad filters.** The *Pump-only* and *Stage* filters exist on every chain. On an EVM follow they read "Launchpad-only" and "curve stage", and they check that chain's launchpad (Flap / four.meme on BSC, pons on Robinhood) instead of pump.fun. Arc has no launchpad (see above). See [Entry filters & risk limits](/entry-filters-and-risk-limits.md).
* **Safety checks before every buy.** On BSC, Robinhood and Arc, MoFo rehearses selling a coin back before buying it, and skips coins with no way out. See [Entry filters & risk limits](/entry-filters-and-risk-limits.md).
* **Buy-size filter** amounts are typed in the chain's own coin: BNB, ETH, or USDC on Arc.
* **Bridging.** `/bridge` moves funds between your MoFo wallets on Solana, BSC, Robinhood and Arc, and in from Ethereum, Base, Arbitrum, Optimism and Polygon. See [Wallet & funding](/wallet-and-funding.md).
* **Key export** on the EVM side gives you one key that works in MetaMask, Rabby or any EVM wallet on BSC, Robinhood and Arc. See [Withdrawals & account security](/withdrawals-and-account-security.md).

## Gas-sponsored trading: not live yet

⚙️ Settings → 🪙 **Trading asset** lets you pick the stablecoin for Solana or BSC. **Gas sponsorship is not switched on for any chain yet.** The screen says "gas sponsorship coming soon" and tells you that you still need SOL or BNB for network fees. Robinhood shows "sponsorship unavailable". Until sponsorship launches, every chain needs its own gas coin in the wallet. On Arc that gas coin is USDC. Bridging and withdrawals are never sponsored.

Everything else behaves the same on every chain: modes, sizing, take profit / stop loss, the exit engine, limit orders and fees.