Coinbase International Exchange will shut down for up to one hour from 09:00 UTC on Oct. 1, 2026, as Coinbase moves institutional derivatives clients to Deribit. The migration will transfer accounts, portfolios, balances and open positions into new Deribit subaccounts, while making perpetual futures temporarily unavailable to users outside the United States. Coinbase will use a hard migration: all existing orders will be canceled, positions settled at International Exchange mark prices and recreated on Deribit through matched Migration block trades at those prices. Existing International Exchange API keys will not work on Deribit. Clients received read-only access to provisioned accounts on Sept. 22 to check balances and prepare new keys, while retail users are expected to undergo a largely automatic transition. Deribit accounted for about 96.6% of Coinbase-group derivatives open interest, with approximately $39.26 billion of the group’s roughly $40.65 billion total as of early September 2026.