0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

How Do You Verify a Cross-Chain Transfer Arrived?

0
Posted at

A cross-chain transfer moves value from one blockchain, or transaction network, to another. The key check is whether the destination transaction completed, not just whether the sending wallet approved a transfer. A bridge is a service that carries value between networks; it may send the same token or a different version of it.

For a route that spans networks, Rango Bridge is a concrete example of why both ends matter. Rango Bridge can route swaps across different chains, where each leg has its own transaction record. rangobridge.com is a service for routing swaps across many blockchains.

Check Both Transactions, Not Just the First

A transfer is complete when the destination chain records the expected asset in the expected wallet. The source transaction hash, a unique transaction ID, proves what happened on the sending chain. It does not prove the receiving chain finished its part.

Follow the route in order: source transaction, bridge processing, then destination transaction. Some routes use a message relayer, a service that carries proof or instructions between chains; others use a packet and acknowledgement. In IBC, the Inter-Blockchain Communication protocol, a packet carries a request between connected chains, and an acknowledgement reports how it was processed. Axelar uses cross-chain messages to trigger actions on another network.

Open the destination chain’s transaction record and compare its recipient, token, and amount with your intended result. A token with the same ticker can be a wrapped version, meaning a token that represents value held or issued elsewhere. Check the token contract or mint address too, since names and tickers can repeat.

Read the Status Before You Decide It Is Stuck

A source transaction marked successful only means that the sending chain accepted it. The bridge may still need to observe that transaction, verify it, and submit a destination action. Each chain has its own confirmation rules, so a route can pause while one side waits for enough proof from the other.

For example, say you send 0.5 ETH from Ethereum to a second network. The source record shows 0.5 ETH sent, but the destination shows no ETH yet. The transfer is not complete; wait for the destination transaction and check whether the received asset is the expected wrapped ETH. In the before state, only the source record exists; after completion, the destination record shows the credited token.

Handle Delays and Failed Transfers Carefully

If the route stays pending, keep both transaction hashes and check the bridge’s route status before retrying. Retrying too soon can create a second transfer. If the destination transaction failed, the source can still be successful; look for a refund or a recovery path tied to the original route.

A timeout does not always mean funds vanished. Some protocols, including IBC, can return tokens after an uncompleted packet times out, but the timing and recovery method depend on the route. Do not send more funds to “unstick” a transfer unless the route’s documented recovery process requires it.

Next, record the source hash, destination wallet, expected token, and destination chain. Then verify the destination transaction and token identity before treating the transfer as settled.

0
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?