What is a jetton?
DefinitionA jetton is a fungible token on the TON blockchain, defined by the TEP-74 standard; USDT on TON is a jetton. Unlike ERC20 tokens, each holder’s balance sits in a small separate contract called a jetton wallet, and every transfer is paid for in TON.
How jettons work
Every jetton has a master contract that holds its metadata, such as name, symbol and decimals, and its total supply. Balances aren’t kept there. Instead, each holder gets their own jetton wallet contract, linked to both the master and the holder’s TON address.
When you send a jetton, your TON wallet sends a message to your jetton wallet, which passes the tokens to the recipient’s jetton wallet, creating it if needed. That wallet can then notify the recipient, which is how a comment or memo travels with a jetton transfer.
Fees on jetton transfers
Jetton transfers are paid in TON, never in the jetton itself. The sending wallet attaches a little TON to cover the messages between contracts, and the unused part is normally returned to you.
So to send USDT on TON, keep a small TON balance in the same wallet. Without it, your jettons can’t move, however large their balance.
Real jettons and fakes
Anyone can create a jetton with any name, symbol and logo, so a token called USDT may be worthless. What identifies a real jetton is the address of its master contract.
- Check the master contract address, not the name or icon
- Be wary of unknown jettons that suddenly appear in your wallet; they are often bait for scam sites
- Never try to “sell” or “claim” a surprise jetton on a website it promotes
Jettons in Waletifi
Waletifi supports TON and jettons on TON, including USDT, with every balance shown in your own currency. The review screen warns you about fake tokens and shows the fee in TON before you confirm, and you can send USDT on TON as a gift link.
