# Extended Plans 0.50% Credit for USDT, wBTC in Arc Settlement Move By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/37799 Published: 2026-10-22T11:47:11.000Z Updated: 2026-10-22T11:47:11.000Z Section: Technology > The shift from Starknet to Circle’s Arc is scheduled for 9 a.m. ET (13:00 UTC) Oct. 22. Trading is scheduled to continue, while deposits and withdrawals may pause for up to two hours. Extended plans to shift settlement from Starknet to Circle’s Arc at 9 a.m. ET (13:00 UTC) Thursday, Oct. 22, with trading scheduled to continue as collateral balances convert. Deposits and withdrawals may be paused for up to two hours. Transfers between sub-accounts are scheduled to remain available during the change. Tether (USDT) will convert to USD Coin (USDC), and Wrapped Bitcoin (wBTC) to cirBTC, at a 1:1 rate. No swap fee will apply. Extended plans to credit a 0.50% premium within eight hours after the migration. Ether (ETH) balances are scheduled to convert automatically to wrapped Ether (wETH) at a 1:1 rate. USDC balances will move to native USDC on Arc through Circle’s Cross-Chain Transfer Protocol. Vault and XVS balances, along with withdrawal rights, are scheduled to be preserved. Circle’s Arc is a Layer 1 blockchain whose public mainnet launched Sept. 16. Starknet is an Ethereum Layer 2 validity rollup that processes transactions off-chain and submits proofs to Ethereum. The strategic partnership aims to broaden real-world asset coverage, deepen liquidity and build institutional distribution. The Oct. 21 action deadline applied to sub-accounts holding more than $1 in USDT or wBTC; holders were required to convert or withdraw those assets before the move. [Earlier coverage outlined potential account and position consequences](). The settlement change is scheduled to begin at 9 a.m. ET (13:00 UTC) Thursday. ## Links in this article - [Earlier coverage outlined potential account and position consequences](https://www.tokenpost.com/news/technology/36390)