We're pleased to announce that Bitfinex customers will be able to deposit and withdraw USDT0 on Polygon. This is to reflect Polygon's transition from bridged USDt to USDT0* as per Polygon’s Official Announcement. As part of this transition, Bitfinex will migrate support from the legacy bridged USDt on Polygon into USDT0 on Polygon.

Key Dates & Actions:

• Deposits & Withdrawals:
• Effective at approximately 6:00 AM UTC on October 8, 2025, deposits and withdrawals for the bridged version of USDt on Polygon (API symbol: TETHERUSDTPLY) will be closed.
  
  
• Effective at approximately 1:00 pm UTC on October 8, 2025, deposits and withdrawals for USDT0 on Polygon (API symbol: USDT0POL) will be enabled. To deposit or withdraw USDT0POL, please navigate to the USDT0 deposit and withdrawal sections.
  
  
• Token Contract Address: The token contract address remains the same (0xc2132D05D31c914a87C6611C10748AEb04B58e8F)
  
  
• Fast Pay and SWAPX: All other Bitfinex platform features that support USDt on Polygon deposits and withdrawals, including Fast Pay and SWAPX, will be updated to USDT0 on Polygon.
  
  
• Balances: All TETHERUSDTPLY transfers on the Bitfinex platform prior to the closure of TETHERUSDTPLY deposits and withdrawals will be treated as USDt balances. USDT0POL deposits after the opening date will be recognised as USDT0POL balances that must be converted to USDt balances via the Currency Conversion tool if you wish to use them for trading or other activities on Bitfinex. To withdraw via the Polygon network, customers must first convert their USDt balances into USDT0POL balances. 

Bitfinex will provide an update on when USDT0POL deposits and withdrawals will be opened via its social media accounts. Customers are advised not to deposit USDT0POL tokens before the announcement. Please refer to our social media announcements for further updates. 

Please note that USDT0POL will not be available for trading. USDT0 is also available for deposit and withdrawal on Ink (USDT0INK), Arbitrum One (USDT0ARB) and the Optimism (USDT0OPX) transport layers on Bitfinex.

Customers holding USDt can seamlessly swap their balances into USDT0POL and the other supported versions of USDT0, and vice versa, using the Bitfinex Currency Conversion tool in the Wallet section. The Currency Conversion tool can be accessed directly here once logged into the platform.

*Both USDt on Polygon and USDT0 are bridged assets on the Polygon Blockchain. Neither is issued by nor redeemable with Tether. Bridged versions of Tether tokens are third-party services and technology within the meaning of Tether’s Terms of Service. To learn more about the USDT0 token, please visit https://usdt0.to. 

Important Note:

This announcement is not an offer to sell or a solicitation of an offer to buy USDT, USDT0, USDT on Polygon or any other cryptocurrency. Any purchase or sale of any cryptocurrency on Bitfinex will occur solely pursuant to the Terms of Use for Bitfinex at https://www.bitfinex.com/legal/exchange/terms.

Forward-Looking Statements:

Certain statements in this announcement may be forward-looking in nature. The words “believe,” “expect,” “estimate,” “could,” “should,” “intend,” “will”, “may,” “plan,” “seek,” “anticipate,” “project” and similar expressions among others, generally identify “forward-looking statements,” which speak only as of the date the statements were made. The matters discussed in these forward-looking statements are subject to a number of risks, trends and uncertainties that could cause actual results to differ materially from those projected, anticipated or implied in the forward-looking statements. None of Bitfinex nor any other person is responsible for updating or revising any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.