How to read a swap transaction on a block explorer to find where your funds went

05 September 2026

You open a transaction ID on a block explorer and see a list of inputs and outputs. The output that matches the amount you sent, minus any network fee, is where your funds went. That output's address is the exchange's deposit address for that specific swap.

Block explorers present transaction data in a standard format that can look dense at first. Every transaction has two main sections: inputs (where coins came from) and outputs (where coins are going). For a simple swap, you will typically see one input from your wallet and one or two outputs. The output that is not a change address returning funds to you is the exchange's address.

Here is how to identify each part. The input section shows the address that funded the transaction. That is your wallet address. The output section lists every address that received coins from the transaction. One output will match the amount you intended to send, minus the network fee. That address is where the exchange expects your deposit. Any other output is your change, sent back to a new address in your own wallet.

Change addresses are a common source of confusion. When you send crypto, your wallet may not have the exact balance in a single unspent output. The wallet must combine multiple inputs and then send the surplus back to you as change. That change address belongs to you, not to the exchange. It will look unfamiliar because most wallets generate fresh change addresses for each transaction. If you see two outputs and one amount is close to what you sent, the other is likely your change. The exchange's address is the one with the exact amount you specified in the swap.

Some block explorers label known addresses. If the exchange has previously used that deposit address, the explorer might show a tag like "exchange hot wallet" or "unknown." Do not rely on tags alone. Always verify the output amount matches your swap value.

If the transaction has more than two outputs, you might be looking at a batch deposit. Some exchanges combine multiple user deposits into a single transaction to save on fees. In that case, find the output whose value matches your exact swap amount. That output's address is your destination.

A concrete example: You swap 0.5 ETH for USDC. The transaction has an input of 0.5 ETH from your wallet. The outputs show 0.499 ETH to address A and 0.001 ETH to address B. The amount to address A is very close to 0.5 ETH minus the fee. That is the exchange address. The 0.001 ETH output is change. The exchange's smart contract then sends you the USDC in a separate transaction.

After you identify the exchange's address, you can cross-check it with the swap confirmation page on the exchange itself. The exchange should display the deposit address it generated for your swap. If the addresses match, your funds arrived where they should. If they do not match, something is wrong. Do not send more funds until you understand the discrepancy.

If you cannot find a transaction with your swap amount, check that you are on the correct blockchain. A transaction on Ethereum will not appear on a BSC explorer. Use the explorer that matches the network you used.

This skill is one part of checking a swap before you trust it. The page titled "Swapping crypto safely" covers the broader workflow from start to finish. Reading a block explorer confirms your funds moved correctly. It does not replace testing a deposit address with a tiny amount first, or waiting for the exchange to credit you after the blockchain confirms. Each step serves a different purpose. Knowing which output is the exchange address keeps you from chasing change addresses or phantom transactions.

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