Ether.fi is migrating its non-custodial card and digital cash account product, ether.fi Cash, to OP Mainnet, moving approximately 70,000 active cards and 300,000 user accounts to the Optimism infrastructure over the coming months.
This move transfers millions of total user values locked from Scroll to OP Mainnet as part of a long-term OP Enterprise partnership. The optimism positions the migration as part of a broader initiative to make OP Mainnet a leading hub for consumer payments and crypto activity.
Ether.fi Cash allows users to switch 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 approximately 2,000 internal swaps and 28,000 expense transactions per day. According to a Dune Analytics dashboard aggregating crypto card data, ether.fi accounts for more than a quarter of total crypto card spending volume.
An Optimism spokesperson said ether.fi brings one of the fastest growing crypto payment products to OP Mainnet, adding that the application processes $2 million in real-world payment volume daily while eliminating DeFi complexity for end users.
“Our thesis is that companies building products like ether.fi need a technology stack that is powerful, secure, and scalable, and that is the OP stack,” the spokesperson said.
Optimism said the OP Stack processed 3.6 billion transactions in the second half of 2025, representing approximately 13% of total crypto activity. The company says this footprint provides sufficient depth and infrastructure for large-scale payment products.
Optimism said it has experience managing large-scale ecosystem migrations, including Celo, Lisk and Ronin, and that users should expect a seamless transition. As an OP Enterprise customer, ether.fi will benefit from enterprise-grade support, access to shared liquidity, and priority integration with future upgrades.
The broader Ether.fi protocol currently guarantees a total value locked of around $5.7 billion, according to data from DefiLlama. The migration marks a strategic shift aimed at positioning OP Mainnet as a liquidity and settlement hub for consumer-focused DeFi applications within the Superchain ecosystem.
