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This page covers the Bridge interface layout and the complete flow for making a cross-chain token transfer.

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Bridge interface

The Bridge has a clean, single-page layout with four main areas: Header — Application logo and the Connect Wallet button showing connection status. Transfer Token Form — The central card and primary interface for initiating transfers: Bridge transfer token form Floating action buttons — The clock icon opens the sidebar with transfer history and connected wallets. Bridge floating action buttons Footer — Links to Hyperlane documentation, Discord, GitHub, Twitter/X, Blog, Terms of Service, and Privacy Policy. Bridge footer

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Transferring tokens

1

Select the source chain

Click the From dropdown. A searchable chain selection modal appears. Select your source chain (e.g., Arbitrum Sepolia).Chain selection modal
2

Select the destination chain

Click the To dropdown and select the target chain (e.g., Autheo Alpha). The same chain selection modal is used for both source and destination.
Use the swap icon (↕) between the chain selectors to quickly reverse the direction.
3

Choose a token

  1. Click the Token selector
  2. A modal opens showing available tokens for the selected route
  3. Search by token name, symbol, or contract address
  4. Click the desired token
Tokens that appear dimmed are currently disabled. If only one token is available on a route, it is auto-selected.Token selection modal
4

Enter the token ID or amount

Type the token ID (for NFTs) or amount in the input field. Your available balance is shown as My balance.
Click Max to auto-fill your full available balance.
5

Enter the recipient address

Enter the destination wallet address in the Recipient address field. The application displays the recipient’s current balance on the destination chain.Recipient address field
6

Review and confirm

  1. Click Continue to enter review mode
  2. Verify all details: source and destination chains, token type and amount, recipient address, and estimated interchain gas fees
  3. Click Cancel to go back and correct anything, or Send to proceed
If the recipient address differs from your connected wallet, a confirmation modal appears asking you to verify.Review and confirm transfer details
7

Sign the transactions

Depending on the token type, you may need to sign one or two transactions:The UI shows a step-by-step status progression:
  1. Preparing
  2. Creating transactions
  3. Signing approval
  4. Confirming approval
  5. Signing transfer
  6. Confirming transfer
Sign transaction — step 1Sign transaction — step 2Sign transaction — step 3Sign transaction — step 4, transfer confirmed
Do not close the browser tab or navigate away while waiting for confirmation.
8

Track delivery

After the source chain confirms:
  • A success notification appears
  • The transfer is added to your Transfer History
  • The Hyperlane protocol relays the message to the destination chain
  • Status updates once tokens arrive on the destination chain
Most transfers complete within a few minutes. Times vary by chain and network congestion.Transfer delivery tracking — in progressTransfer delivery tracking — completed

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Token approvals

When transferring ERC-20 tokens, you must first approve the warp route smart contract to spend tokens on your behalf. This is a standard blockchain security mechanism. How approvals work:
  1. First transfer of a token — The application prompts you to sign an approval transaction before the transfer. A small amount of gas on the source chain is required.
  2. Subsequent transfers — If sufficient allowance remains, you will not be asked to approve again.
  3. Revoke and re-approve — In some cases, the application may request that you revoke an existing approval and grant a new one.
NFT transfers (ERC-721) follow a similar approval pattern but operate per-token rather than as a spending allowance.