Link: https://old.reddit.com/r/CryptoCurrency/comments/1v94owc/need_help_understanding_forensic_data_usdt_and_trx/

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The original was posted on /r/cryptocurrency by /u/reddit-trk on 2026-07-28 17:12:24+00:00.

I have a bunch of spreadsheets worth of transactions between a number of wallets.

I've been reading quite a bit but I think it's time to ask for help.

My understanding is that every USDT transfer between wallets also needs a small amount of TRX to be paid (the gas fee, if I'm not mistaken).

I would imagine that if Wallet A sends USDT to Wallet B, then the TRX ought to come from Wallet A as well.

What I'm seeing is somewhat different. Let me use an example:

5/10/24 10:00:00 - Wallet A sends 5000 USDT to Wallet B.

5/10/24 10:00:09 - Wallet C sends 0.000001 TRX to Wallet B.

The second transaction usually happens within ~10 seconds of the first one, and is obviously the gas fee, given how this pattern repeats for every transaction I've looked at.

Why is the TRX coming from a different wallet? Shouldn't it also come from Wallet A?

Thanks!!!

Edit - here's a sanitized copy of one such transaction:

https://preview.redd.it/t806mdfld0gh1.png?width=961&format=png&auto=webp&s=f36e3fbbb405932eef795fe9051eb5278bea8654