How a bridge works

A bridge is one signed flow. Nothing moves until the connected wallet confirms it.

1. Connect. The button in the header opens your wallet. That address is the signer. It is also the receiver, unless you paste a different one.
2. Pick From. Choose the chain you are leaving, then USDC or ETH. ETH is only offered where that chain’s gas token is ETH. Robinhood’s dollar is labeled USDG.
3. Enter an amount. Stable transfers start at 0.1. The 20%, 50%, and MAX buttons fill from the balance VOLT just read. The quote updates after you stop typing.
4. Pick To. Only chains with a live rail can be selected. The flip control swaps the two sides when a route exists in both directions.
5. Read the quote. You should see the amount you will receive, a time, and the rail name, CCTP or Relay. If the pair has no route, the button says so and does not open a wallet.
6. Review and sign. The review lists what you send, what you receive, the network fee, and the total. Confirm in the wallet. If an approval is required, that is the first prompt. The bridge is the next one. VOLT waits for each transaction to land before it asks for the next.
7. Wait for delivery. After the burn or Relay deposit is on chain, Circle or Relay finishes the mint. That wait is not a second signature.

You need the source chain’s gas token to sign. On Ethereum, Base, Arbitrum, Optimism, and Robinhood that is ETH. On Polygon it is POL. On Avalanche it is AVAX. On Arc it is USDC.