Ethereum: how to cancel unconfirmed transaction in blockchain.info

Canceling Unconfirmed Ethereum Transaction on Blockchain.info

I can see why you’d be frustrated with the lack of helpful responses. Canceling an unconfirmed transaction on your Ethereum wallet is indeed a process that requires some technical expertise, but I’m here to guide you through it.

What is an unconfirmed transaction?

Before we dive into the solution, let’s quickly understand what happens when a transaction goes unconfirmed:

• When you send funds from one Ethereum address to another using a mixer or a relay service, the transaction is broadcast and confirmed by the network (although in this case, it was likely never confirmed).

• By default, the transaction remains on the blockchain for an extended period, which can lead to issues if someone tries to use the funds before they’re confirmed.

• To cancel an unconfirmed transaction, you need to ensure that the funds are still available and accessible.

How to cancel an unconfirmed Ethereum transaction on Blockchain.info

Using your Ethereum wallet address (e.g., [Your Wallet Address]), follow these steps:

• Locate the transaction

  

  : On Blockchain.info, navigate to the “Transactions” tab and find the unconfirmed transaction related to your Bitcoin (BTC) funds.

• Check the status

  : Make sure that the transaction is indeed unconfirmed by checking its status in the “Status” column.

• Find the sender’s address: Identify the Ethereum wallet address of the mixer or relay service that received your BTC.

• Send a “Cancel” request: In the “Details” section, click on the “Actions” dropdown menu and select “Cancel transaction”. This will initiate a new transaction to cancel the original one.

However, this process is not foolproof, as the transaction may still be confirmed by the network or other nodes on the blockchain. To minimize risks:

• Wait for a while: If you’re concerned about the transaction being confirmed, wait a bit longer (e.g., 30 minutes) before canceling it.

• Check Blockchain.info regularly: Periodically check your transactions to ensure they’ve been cancelled as expected.

Important note

While this method allows you to cancel an unconfirmed Ethereum transaction on Blockchain.info, there are potential risks involved:

• The mixer or relay service may still be using the funds, and you could lose access to them if they’re not notified.

• If another party is waiting for the funds, they may try to claim them before the cancellation.

To mitigate these risks, consider using a more secure approach, such as using a hardware wallet or a reputable relayer service that can ensure transaction immutability.