# TRC20 transfer events: what to monitor

## Short answer

TRC20 is a contract standard for tokens on TRON. Token transfers use a smart contract; monitoring native TRX transfers alone does not cover USDT TRC20.

## What does the event contain?

The TRC20 interface defines a Transfer event with sender, recipient and value. Track the token contract as well as the wallet address. Token amounts use the contract’s decimals, rather than a universal decimal scale.

## What should an alert tell you?

Keep the transaction identifier, direction, amount and confirmation state together. A transfer notification and a counterparty list check answer different questions.

Never give a monitoring service your private key or recovery phrase.