> ## Documentation Index
> Fetch the complete documentation index at: https://docs.windrose.market/llms.txt
> Use this file to discover all available pages before exploring further.

# Testnets

> Try every flow with nothing at stake on Robinhood testnet or Arc testnet: faucets, test dollars, the network switcher and deep links.

Windrose runs the same contracts on two testnets. Everything works there exactly as on Robinhood Chain, including graduation into Uniswap v4 and backing a vault, and nothing there has value.

## Pick a testnet

Open the network switcher in the top bar and choose **Robinhood Testnet** or **Arc Testnet**. Entries tagged **testnet** are test networks; an entry tagged **soon** is a mainnet the contracts are not deployed on yet. If your wallet is on a different network the switcher offers to switch it.

|                | Robinhood testnet                                                                    | Arc testnet                                                          |
| -------------- | ------------------------------------------------------------------------------------ | -------------------------------------------------------------------- |
| Chain id       | 46630                                                                                | 5042002                                                              |
| Gas            | ETH                                                                                  | USDC                                                                 |
| Dollar         | Test USDG, mintable in the app                                                       | Circle's testnet USDC                                                |
| Get gas        | [QuickNode faucet](https://faucet.quicknode.com/robinhood/testnet)                   | [Circle faucet](https://faucet.circle.com), which is also the dollar |
| Get the dollar | Press **Get test USDG** anywhere in the app                                          | Same faucet as gas                                                   |
| EUR            | Not registered                                                                       | Registered, settles in EURC                                          |
| Oracle         | Keeper oracle                                                                        | Keeper oracle (a Pyth adapter is also deployed)                      |
| Explorer       | [explorer.testnet.chain.robinhood.com](https://explorer.testnet.chain.robinhood.com) | [explorer.testnet.arc.io](https://explorer.testnet.arc.io)           |

Windrose currencies on the testnets carry the older `ac` prefix (`acINR`, "Arc Indian Rupee") because token names are immutable and those deployments predate the rename. They behave exactly like `wINR` on Robinhood Chain.

## Test dollars on Robinhood testnet

The deployment there includes a mock USDG that anyone can mint. The **Get test USDG** button appears on the trade panel when your balance is short, on the USD currency page, and on the create form's balance line. Each press mints 1,000 test USDG to your wallet. Use it to buy on curves, mint Windrose currencies, dev-buy at launch and back vaults.

The button never appears on Arc, where the dollar is real testnet USDC from the faucet, or on any mainnet.

## Gas on Arc testnet

Arc's gas token is USDC. Your wallet shows the native balance with 18 decimals; the ERC-20 the app uses has 6 decimals; they are the same money. Arc enforces a 20 gwei minimum base fee, which the app sets automatically. The Circle faucet gives 20 USDC per claim.

## Deep links

Every link inside the app carries `?chain=<id>`. A token page shared from Robinhood testnet looks like `https://windrose.market/t/0x...?chain=46630` and opens on that testnet for whoever clicks it. The selected network is remembered in the browser until you change it.

## Where testnets are listed

A production build of the app hides testnets from the switcher so the public site offers only real networks. Operators can list them again by building with `NEXT_PUBLIC_SHOW_TESTNETS=1`. A build whose default network is a testnet always lists them. See [Web app](/operate/web-app).

<Note>
  Testnet tokens, currencies, shares and fees have no value and can be wiped by a redeploy. The protocol has not been audited; that is true on testnets and on Robinhood Chain alike.
</Note>