Ether.fi is migrating its non-custodial card and digital cash account product, ether.fi Cash, to OP Mainnet, shifting roughly 70,000 active cards and 300,000 user accounts onto Optimism infrastructure over the coming months.
The move transitions millions in user total value locked from Scroll to OP Mainnet under a long-term OP Enterprise partnership. Optimism positions the migration as part of a broader push to establish OP Mainnet as a leading hub for payments and consumer crypto activity.
Ether.fi Cash allows users to move from fiat to crypto, earn yield through DeFi strategies, spend globally via a Visa-accepted card, and manage assets in a non-custodial wallet.
The product processes roughly 2,000 internal swaps and 28,000 spend transactions per day. According to a Dune Analytics dashboard ggregating crypto card data, ether.fi accounts for over a quarter of total spending volume across crypto cards.
An Optimism spokesperson said ether.fi brings one of the fastest-growing crypto payment products to OP Mainnet, adding that the app processes $2 million in real-world payment volume daily while abstracting away DeFi complexity for end users.
“Our thesis is that companies building products like ether.fi need a powerful, secure, scalable tech stack, and that’s the OP Stack,” the spokesperson said.
Optimism said the OP Stack handled 3.6 billion transactions in the second half of 2025, accounting for about 13 percent of total crypto activity. The company argues this footprint provides sufficient depth and infrastructure for large-scale payment products.
Optimism said it has experience managing large ecosystem migrations, including Celo, Lisk, and Ronin, and that users should expect a seamless transition. As an OP Enterprise customer, ether.fi will receive enterprise-grade support, access to shared liquidity, and priority integration with future upgrades.
Ether.fi’s broader protocol currently secures roughly $5.7 billion in total value locked, according to DefiLlama data. The migration marks a strategic shift toward positioning OP Mainnet as a liquidity and settlement hub for consumer-focused DeFi applications within the Superchain ecosystem.
