Synthetix DEX returns to Ethereum mainnet after 2022 exit

Synthetix Network has returned to Ethereum mainnet, betting that scaling upgrades make layer-1 viable again for perps.
Summary

• Synthetix has relaunched its perpetual futures decentralized exchange on Ethereum mainnet.
• The return follows a two-year period operating across Layer-2 networks.
• The protocol is using offchain matching with onchain settlement to scale trading.

Synthetix has brought its core trading product back to where it’s original home.

In a blog post published on Dec. 19, the protocol announced the launch of its canonical perpetual futures DEX on Ethereum (ETH) mainnet, marking its first return since migrating away to layer-2 networks in 2022.

Perpetual trading restarts with limited access

The relaunch will kick off with a private beta. With support for Bitcoin, Ethereum, and Solana markets, Synthetix Perps is currently operating on Ethereum and provides up to 50x leverage. Only 500 users, selected from contributors, stakers, and seasoned traders, have been granted access.

Introducing Synthetix Perps on Ethereum Mainnet ⚔️

We are thrilled to announce that Synthetix, the canonical perp DEX on Ethereum, is now live.

📘

🧵⬇️ pic.twitter.com/CqcptUK96R

— Synthetix ⚔️ (@synthetix) December 19, 2025

Each user is capped at 40,000 USDT in deposits. Withdrawals are disabled at launch and are expected to open roughly one week later after the team monitors on-chain deposit behavior.

Synthetix (SNX) said the current setup is only an early version. New markets are planned to roll out weekly, alongside higher leverage limits, larger deposit caps, and additional trading features over the next few months.

The mainnet return follows an internal reset. Most of the current team joined within the past year, and founders Kain Warwick and Jordan Momtazi have returned to active leadership roles.

Why Synthetix is betting on Ethereum again

Synthetix left Ethereum mainnet in 2022 as gas costs made high-frequency trading difficult. Since then, it has operated across Optimism, Arbitrum, and Base. The team now says those environments came with limits that became harder to ignore over time.

The new system uses off-chain order matching with onchain settlement. User funds stay on Ethereum. Trades settle directly on layer 1 and withdrawals are permissionless. According to Synthetix, this setup delivers low latency while keeping custody and settlement on Ethereum.

Lower gas prices and recent mainnet upgrades like Fusaka also influenced the move. The team believes Ethereum can now support more complex trading activity without forcing users to bridge assets or split liquidity across networks.

Warwick said the shift is based on years of trial and error. In his view, capital, liquidity, and serious traders tend to concentrate where custody, settlement, and composability are strongest.

Synthetix plans to expand the platform through 2026 with multi-collateral margin, new order types, real-world asset markets, and deeper integration with Ethereum-based DeFi applications.