In order to troubleshoot issues with buying or selling your NFT, the OpenSea support team may request your "transaction hash" from a blockchain explorer.

Transaction hashes are unique IDs recording each transaction on the blockchain; this includes NFT purchases, sales, and transfers. If a gas fee is paid, a transaction hash is generated.

Depending on the cryptocurrency used to purchase the NFT, you'll need to use the associated blockchain explorer, such as Etherscan for ETH, Polygonscan for Polygon, or BaseScan for Base.

The example below is ETH, using Etherscan, but most other blockchain explorers work in a similar way.

First, you'll need your wallet address. You can find this in your crypto wallet or next to your account name on OpenSea. Make sure you're using the wallet that you used to make your purchase.

Once you have your wallet address, navigate to Etherscan and paste it into the search bar.

This will take you to the wallet address’ summary page on Etherscan. On the bottom left of the page, under the overview, you'll be able to see transaction hashes under the Transaction Hash column.

You can click into any transaction or copy the transaction hash to your clipboard. Make sure to include transaction hashes in text (rather than screenshots) when reaching out to OpenSea support.

You can also obtain your transaction hash using OpenSea.

In your profile, select the activity tab. Click on the time stamp redirect link to view the transaction on the blockchain explorer directly.