How ether.fi Moved $220M to OP Mainnet Without Pausing a Single Card Payment

ether.fi completed a live migration of $220M TVL to OP Mainnet in three days (completed April 15) without pausing card payments or user-facing services. The team ran 70,000 active cards and 300,000 accounts continuously by separating card payment accounting from on‑chain settlement and using Gnosis Safe deterministic deployments to preserve multisig addresses. Major assets (USDC, USDT, WETH) were bridged in stages while most tokens moved as OFTs to reduce complexity. OP Mainnet performed with sub-250ms finality, near-zero median fees and 99.99% uptime. Post-migration TVL rose from $220M to $347M, signalling strong market confidence and deeper liquidity on OP Mainnet; roadmap items include Gold Vaults, a Euro card and a native stablecoin. The move is presented as a technical milestone with positive implications for institutional adoption of OP Stack chains.