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Ether.fi, the largest non-custodial crypto card by spend volume, has officially gone live on OP Mainnet — bringing with it $220 million in total value locked, 300,000 accounts, and 70,000 active cards.
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The migration marks the single largest TVL event in OP Mainnet history and was completed in just three days with zero downtime.
The move positions OP Mainnet as the long-term infrastructure home for one of crypto's most active consumer fintech products, with Gold Vaults and a Euro card already on the roadmap.
Three Days, Zero Downtime
The full migration was executed over three days, during which all 70,000 active cards remained fully operational.
According to Optimism's announcement on X, the Optimism Foundation worked alongside the Ether.fi team on bridge engineering, oracle support, asset metadata, and the operational logistics required to move a live consumer product without disruption.
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EtherFi Cash processes millions of dollars in real-world payments daily through tap-to-pay functionality anywhere Visa is accepted. Maintaining uninterrupted card operations during a migration of this scale was a key requirement — and one the teams delivered on.
Why OP Mainnet?
According to Optimist Prime's thread on X, the Ether.fi team evaluated multiple chains before selecting OP Mainnet. The decision came down to the performance profile required by a consumer-scale payment product that settles real money every day.
The key infrastructure metrics that drove the decision:
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Median fees: $0.00001
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Finality: Sub-250ms via Flashblocks
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Throughput: 20Mgas/sec, scaling toward 100Mgas/sec
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Uptime: 99.99%
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Data feeds: Powered by Pyth Network
For a payment product operating at consumer volume, latency directly impacts user experience, fees affect churn, and uptime is non-negotiable. OP Mainnet's performance profile matched what Ether.fi needed to continue scaling.
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What Makes EtherFi Cash Different
EtherFi Cash combines a traditional card experience — instant settlement, global reach, and tap-to-pay — with onchain yield. Every dollar sitting on the card earns yield onchain, a feature that traditional credit cards cannot replicate. The product is backed by a $5.8 billion protocol and now runs entirely on OP Mainnet's infrastructure.
Mike Silagadze, CEO of Ether.fi, framed the migration as a necessary step for the product's next phase:
"EtherFi Cash is the largest non-custodial crypto card in the market, and the roadmap we've been building is why. To ship what comes next, we needed infrastructure that could handle real-time payments at consumer volume. OP Mainnet delivered on every dimension. Three days to migrate $220M with no downtime answered the question. Now we get to build." — Mike Silagadze, CEO, Ether.fi
Liquidity Flywheel and Ecosystem Impact
The $220 million in TVL doesn't just benefit Ether.fi — it deepens every liquidity pool already on OP Mainnet. According to Jing Wang of OP Labs, the influx changes the calculus for other protocols weighing similar infrastructure decisions.
"This is what OP Mainnet is for. A live consumer product at this scale picks the infrastructure it needs for the next chapter, and we're building with Ether.fi for what comes next. Every dollar that lands deepens the liquidity for everyone already here." — Jing Wang, OP Labs
The migration also serves as a proof of concept for other teams considering a move to OP Mainnet. A $220M migration completed in three days with zero downtime and no user-facing disruption sets a benchmark for what's operationally possible.
What's Next
With the migration complete, the Ether.fi and Optimism teams have outlined several near-term priorities:
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Gold Vaults and Euro card launches on OP Mainnet
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Expanded DeFi integrations and yield strategies built on Ether.fi's relocated collateral
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Continued scaling of OP Mainnet throughput toward 100Mgas/sec
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Ongoing joint milestones under the partnership between the Optimism Foundation and Ether.fi
The full details of the migration and partnership are available in Optimism's official blog post.