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ether.fi completed a full migration to OP Mainnet on April 15, moving $220M in total value locked across chains in three days.
During the transition, the platform ran 70,000 active cards and 300,000 accounts without a single migration-related card decline. No maintenance window was announced and no customers were notified, even as the infrastructure supporting millions of dollars in daily payments changed while transactions continued to process.
The migration began with ether.fi’s Scroll deployment remaining fully operational. The OP Mainnet environment was built alongside it, coming online gradually rather than as a single replacement system.
Core contracts were deployed first on OP Mainnet, mirroring the exact ownership configuration running on Scroll. New users were provisioned directly onto OP Mainnet during the build phase.
Three assets—USDC, USDT, and WETH—moved through bridges in stages, traveling from Scroll to Ethereum before taking separate paths to OP Mainnet. Other assets were migrated as OFTs, removing the Ethereum leg and reducing bridging complexity and potential single points of failure.
Gnosis Safe’s deterministic deployment across OP Stack chains allowed ether.fi to keep identical multisig addresses on OP Mainnet, avoiding the need to reconcile address differences—an issue that can complicate cross-chain infrastructure moves.
Custom monitoring tools were used throughout the migration period, and no unexpected alerts were triggered from start to finish. Optimism’s permissionless infrastructure meant core deployments required no special access.
“OP Mainnet is the only place where the team that built the stack co-pilots your migration, and where the liquidity is already deep before you arrive.”
ether.fi paused deposits and withdrawals during the migration window. Card payments, however, continued without interruption. The platform’s accounting system tracks card spend separately from onchain settlement, allowing authorizations to keep processing while assets moved between chains.
The structure also included a fallback approach: if anything had broken mid-migration, the team could continue routing through Scroll while investigating. After the migration closed, outstanding activity was settled on OP Mainnet and deposits and withdrawals reopened without incident.
OP Mainnet’s performance floor held throughout the transition, with sub-250ms finality through Flashblocks, $0.00001 median transaction fees, and 99.99% uptime.
Pyth Network oracle feeds for EURC/USD, ETHFI/USD, and eUSD/USD were confirmed live before migration day, with Chainlink serving as a fallback.
“We closed the move in three days with zero downtime, and we’re already building the next chapter.”
Since the migration closed, TVL has grown from $220M to $347M. The roadmap includes Gold Vaults, a Euro card, and native stablecoin support.
