Legacy & Deprecated

This section documents deprecated Synthetix perps trading deployments on Optimism, Arbitrum, and Base. These are for reference only— all new trading will be on Synthetix Mainnet once live.

Traders and LPs have 6 months from the date of deprecation to complete any necessary claims or resolve issues.

• Perps trading on Optimism is now deprecated (as of August 25th, 2025). Margin for most traders will be returned to their wallets in the weeks following deprecation.

• Perps trading on Base is now deprecated (as of July 7th, 2025) including LP assets. Margin for most traders was returned to their wallets in the weeks following deprecation.

• Arbitrum is now fully deprecated (of June 13th, 2025) including LP assets.

If you used multicollateral, owed debt or had a custom setup, you may need to claim your margin or LP from the Synthetix Treasury. Please join the Synthetix Discord and create a support ticket for assistance.