Question 1

What is USDT on Base?

Accepted Answer

USDT on Base is an unofficial bridged token that imitates the well-known Tether stablecoin (USDT) on the Base network. This token operates using a "mint and burn" mechanism, where only the Layer 2 (L2) bridge contract can issue (mint) or remove (burn) tokens. The contract for this USDT on Base includes references to two key components: the official USDT contract on Ethereum Mainnet (Layer 1) and the L2 bridge contract on Base. However, no documentation exists from Tether Inc., Base, GFX Labs, or any other entity that recognises or endorses this bridged asset. Additionally, it does not appear on any official token lists, such as those maintained by Optimism or Superbridge, confirming its unverified status.

Question 2

What is USDT on Base used for?

Accepted Answer

This bridged version of USDT is used within the Base ecosystem, primarily on decentralised exchanges (DEXs) for trading and liquidity provision. Although it functions as a stable asset in these contexts, users should exercise caution. This token lacks official support from Tether Inc., and its absence from recognised token lists means it does not have the security assurances typically associated with verified assets. Base’s bridging infrastructure allows any user to deploy bridged tokens, meaning that assets like this USDT version exist independently, without oversight or endorsement from Tether Inc., Base, or other authoritative entities.

Question 3

Who created USDT on Base?

Accepted Answer

The exact origin of USDT on Base remains unclear. The Base explorer lists gfx.xyz as linked to this token, but there is no public documentation from GFX Labs confirming their involvement. Security firm BlockSec has also associated GFX Labs with the token’s deployment, but without formal verification, this connection remains speculative. Base’s native bridge infrastructure operates in a permissionless manner, allowing any entity to deploy bridged tokens without centralised approval. While only the L2 bridge contract can mint and burn tokens, this setup enables unverified tokens like this version of USDT to exist without formal oversight. Given the lack of transparency, users should approach this asset with caution.

***Although 'USDT' was the ticker assigned at the deployment of this token's smart contract on basechain, it is already in use by another asset that has a larger market presence and higher trading volume on major exchanges. Due to this pre-existing association and to avoid confusion in the marketplace, the alternative ticker 'USDTBASE' has been adopted for this token. This designation is specifically used to ensure that assets are distinctly identified.***