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

TLDR: ether.fi ran 70,000 active cards and 300,000 accounts uninterrupted during a full live chain migration. Separating card payment accounting from onchain settlement was the architectural decision that made zero downtime possible. Gnosis Safe’s deterministic deployment eliminated address reconciliation — a common blocker in cross-chain moves. Since closing the migration, TVL has surged from $220M [...]

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