How do I find a swap transaction hash when the exchange site is down

07 September 2026

You cannot retrieve a swap transaction hash from your wallet alone if the exchange site is down. The hash is recorded on the blockchain, but you need either the exchange's confirmation page, a saved swap ID, or your own wallet transaction history to locate it. Without one of these starting points, the hash is effectively lost.

Why the exchange site matters

When you swap tokens through a third-party exchange, the transaction is typically a two-step process. First, you send your tokens to the exchange's contract. Second, the exchange sends the swapped tokens back to your wallet. The exchange's interface links these two transactions into one swap record. That record contains the transaction hash for both legs of the swap. If the exchange site goes offline, that link disappears.

Your wallet only shows the transactions you initiated or received. If you sent tokens to the exchange, your wallet will show that outgoing transaction. But it will not show the return transaction as part of a swap - it will appear as an unrelated incoming transfer. Without the exchange's context, you cannot prove that the two transactions were a single swap.

What you can try

Check your wallet's transaction history. Look for the outgoing transfer to the exchange's contract address around the time you think you swapped. Copy that outgoing transaction hash. Then look for an incoming transfer from a different address shortly afterward. That incoming transfer is likely the swapped tokens. The combination of these two hashes is your best substitute for a single swap hash.

Search your email inbox. Many exchanges send a confirmation email containing the swap ID or transaction hash. Even if the site is down, the email remains. Search for the exchange's domain name plus "swap" or "exchange" in your email. The confirmation may include the exact hash you need.

Check your browser history. If you opened the exchange's swap confirmation page, your browser may have cached it. Look for the exchange's URL in your history from the date of the swap. Some browsers also save a local copy of the page. You can view that cached version without the live site.

Use a blockchain explorer. If you know the exchange's contract address, you can search for all transactions involving your wallet address on that contract. This will show every swap you did with that exchange. The explorer lists the transaction hash for each interaction. You will need to match the amounts and timestamps to identify the correct swap.

What this means for your tax trail

The hub page "Proof you swapped for your tax trail" explains why preserving swap records matters. If the exchange site is gone, your tax documentation becomes harder to assemble. The transaction hashes are the raw evidence that a swap occurred. Without them, you may have to reconstruct the swap from wallet data alone. That is possible but time-consuming, and it may not satisfy an auditor who expects a single clear hash.

Save your swap confirmation pages and emails immediately after each swap. Screenshot the page that shows the transaction hash. Store the swap ID separately. These steps remove the dependence on the exchange site being live. The transaction hash is on the blockchain permanently. Getting to it without the exchange's help is the real problem.

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