How to identify if an Ethereum transaction involves ERC721 token transfers using Etherscan

NFT
1

I’m trying to figure out how to determine whether a specific Ethereum transaction involves ERC721 (NFT) token transfers when looking at it on Etherscan.

What are the key indicators or sections I should check in the transaction details? For example, should I look at the logs, input data, or token transfers section? Are there specific event signatures or method calls that would clearly show this is an NFT-related transaction?

I have a particular transaction hash that I suspect might be related to NFT activity, but I’m not sure how to confirm this just by examining the Etherscan interface. Any guidance on the step-by-step process would be really helpful.

2

To identify if a transaction involves ERC721 token transfers on Etherscan, focus on the “Logs” section. Look for events labeled Transfer(address,address,uint256); if a token ID is present instead of a quantity, it indicates an ERC721 transfer. Additionally, contracts listed in the “To” field with an ETH value of 0 often hint at NFT activity. The input data might reveal transferFrom or safeTransferFrom calls, which are typical of ERC721 transactions. Also, the presence of an “ERC-721 Token Txns” tab further confirms NFT transfers.

3

Hey! What made you think that transaction was NFT-related? Was it the contract address or something else?

Here’s something others haven’t mentioned - check if the contract address is verified on Etherscan. Go to the contract tab and look for functions like tokenURI() or ownerOf() in the code. That’s a dead giveaway it’s an ERC721 contract. Sometimes the contract name gives it away too - stuff like “CryptoPunks” or anything with “NFT” in it.

Quick idea - paste your transaction hash here and we can help you spot what to look for. Way easier to learn from a real example than just theory.

Are you tracking a specific NFT collection or just learning to identify these transactions? Would help us give better advice!

4

just check the token transfers section for any txs with token IDs. also, you can click on the “ERC-721 Token Txns” tab on etherscan to make it easy to verify if those transactins are NFT related.