Token standard
What is TRC20?
TRC20 is the token standard for Tron: the common set of functions a token contract implements so that wallets and exchanges can hold, send and receive it in the same way.
What TRC20 means in practice
A token that follows a standard is not a coin of its own network. It is a contract that keeps a record of balances, so sending it moves a record inside that contract, and the network fee is paid separately, in the network’s own coin.
Which tokens Unheld lists under TRC20
Read from the same catalogue every page of this site is built from. Decimals and confirmation depth are each network’s own.
| Supported assets | Supported networks | Decimals | Confirmations |
|---|---|---|---|
| USDT | Tron | 6 | 19 |
The same token can use different decimals and a different confirmation depth on another network. Take both figures from the row you invoice on.
What is different when you send TRC20
- An address is 34 characters long and starts with T. It encodes the same 20 bytes as the Ethereum-style address for the same key, so a T address and a 0x address can look unrelated and still belong to one key.
- A transfer is metered in bandwidth and energy. When an account has too little of either, TRX is burned to cover the rest.
- Unheld credits a payment only after enough confirmations on the network: Tron (19).
- TRC20 belongs to its own network. The same token can exist on another network under another standard, and a transfer sent on the wrong one may not be recoverable. Pay on the network the invoice names.
How Unheld handles it
Every Unheld invoice names one exact network and shows it to the payer, so TRC20 payments are detected on that network only, credited after its confirmation depth, and settled straight to an address that belongs to your own wallet. Unheld never holds them.
TRC20 questions
Which networks use TRC20?
Among the networks Unheld lists, TRC20 tokens live on Tron.
Which TRC20 tokens can I accept with Unheld?
USDT, each on the network shown in the table above.
What happens if a payer sends on the wrong network?
The transfer lands on a network the invoice did not name and may not be recoverable. The invoice page states the network for exactly this reason.
Who pays the network fee?
The payer pays the network fee to the blockchain. Unheld takes no share of the payment.
Sources
Every figure on this page comes from one of these documents. Each was read on the date shown rather than recalled.