Check a Cross-Chain Swap Before You Send

Before sending a cross-chain swap, check the source asset, destination asset, minimum amount you can receive and address on the receiving network. These details tell you what the swap is set to do, and help catch mistakes before your funds leave your wallet.

A cross-chain swap exchanges an asset on one blockchain for an asset on another. The route may use liquidity pools, validators or other services to move and exchange value. Some systems issue a wrapped token, which represents an asset held elsewhere; others swap native assets directly. For a fuller look at the latter approach, see this explanation of how Chainflip handles native cross-chain swaps. The route matters because it affects fees, timing and what happens if the swap cannot complete.

Which assets and networks should you check?

Check both the asset and the network it belongs to; a token with the same name can exist on several chains. Make sure the source network shown in the swap matches the network holding your funds, and that the destination network matches the address you plan to use.

Then check the destination address, character by character or by using your wallet’s address book. Some networks use different address formats, and an address may work on one chain but not another. Confirm that you control the address or that the receiving service accepts deposits of that asset on that network. A correct token sent to an unsupported deposit network may be hard or impossible to recover.

What should the quote tell you before you sign?

A quote should show the expected output and, where available, the minimum output the swap will accept. Slippage means the price moves between the quote and execution. A wider slippage limit can make a swap more likely to complete during price changes, but it also allows a worse exchange rate. Compare the minimum output with the amount you actually consider worthwhile.

• Fees: Check network fees and any swap or service fee. See whether the output shown is before or after those costs.
• Route: Check that the route names the source and destination chains and the assets you chose.
• Time: Look for an estimate and any quote or deposit expiry. Cross-chain transfers can take longer than a single-chain swap because each network must process its part.
• Refund details: Check what happens if the swap fails, including which asset may be returned and to which address.

Do not treat the quoted output as guaranteed unless the interface says it is fixed under stated conditions. Network fees can also change while a transaction waits to be confirmed.

What should you check in your wallet?

Before confirming, make sure the wallet is connected to the source network and the transaction matches the swap you set up. If the swap needs token approval, check which token and spending limit the approval covers. An approval lets a contract use tokens up to that limit; it does not itself perform the swap.

For a deposit-address flow, confirm that the address belongs to the current swap and that the deposit window has not expired. Send only the requested asset on the specified source chain. For a wallet transaction, review the final network, amount, destination and fee in the wallet prompt rather than relying only on the swap page.

The best check for most readers is simple: verify both networks, both assets, the receiving address, the minimum output and the fees before signing. If any of those details is unclear, pause and get a fresh quote or confirm the destination with its owner.