Extended to Migrate Perpetual DEX Settlement to Circle’s Arc Blockchain

TLDR:

• • Extended will migrate its settlement network to Circle’s Arc blockchain during the week of October 19.
  • Holders of over $1 in USDT or wBTC must convert to USDC or cirBTC by 12:00 UTC on October 21. 
  • Converting earns a 0.50% premium paid by Extended, with no swap fees and credit within 8 hours. 
  • Deposits and withdrawals pause for about two hours, while trading and sub-account transfers continue. 

The Extended Arc migration will move its settlement network to Circle’s Arc blockchain during the week of October 19. Extended operates a perpetual DEX offering contracts on stocks, commodities, indices, and crypto.

Arc is a Layer 1 network built for financial markets, and it launched on September 16. Trading will continue throughout the process.

Users holding more than $1 in USDT or wBTC must convert those assets by 12:00 UTC on October 21. Neither asset exists on Arc.

Extended Arc Migration Plan and User Deadline

In a post on X, Extended announced, “Extended is migrating its settlement network to Arc.” The platform listed three improvements.

On infrastructure, it said trades “settle on Arc, with sub-second finality and stablecoin-denominated fees that make costs predictable.” Extended also expects broader real-world asset coverage and deeper liquidity across spot and perpetual markets.

Accounts, sub-accounts, positions, orders, history, points, and keys will carry across unchanged. However, users with more than $1 of USDT or wBTC in a sub-account must act before the deadline. They can convert in the app to USDC or cirBTC at a 1:1 rate plus a 0.50% premium.

Extended pays the premium and charges no swap fees. The premium will be credited within 8 hours after the migration.

One approval in the app covers both assets and every sub-account. Deposits of both assets were disabled as of 16:00 UTC on the day of the announcement.

ETH balances will convert automatically to wETH on Arc at a 1:1 ratio. USDC will migrate as native USDC. Vault and XVS balances, along with withdrawal rights, will be preserved. Other users need to take no action.

Process Risks and Arc Features

Deposits and withdrawals will pause for roughly two hours during the Extended Arc migration. Transfers between sub-accounts will keep working.

Extended advised users to “make sure that open positions are comfortably margined.” Precise timing will be shared closer to the date.

Under the Extended Arc migration rules, users who miss the deadline face account restrictions. Standard liquidation rules still apply, and they cannot add margin or close positions.

Affected sub-account positions close at the mark price with no fee, and open orders are cancelled. Extended returns the assets to the login wallet on Starknet or Ethereum and covers network fees.

Arc mainnet went live on September 16 with four features relevant to a trading venue. These are deterministic sub-second finality, gas paid in USDC, and EVM compatibility. The network also has an institutional validator set. Existing wallets and tooling will continue to work as they do today.

Extended is building a unified platform for trading perpetual contracts across asset classes with varied collateral. That plan requires a settlement layer built for markets and trusted by the institutions that distribute them. Arc launched with BlackRock, DTCC, ICE, Visa, and Mastercard among its founding validators.

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