ether.fi has announced plans to migrate its crypto debit card product, Cash, to Optimism's OP Mainnet in the coming months. This transition will involve over 70,000 active debit cards, more than 300,000 accounts, and a total value locked (TVL) exceeding $160 million. The move marks a strategic collaboration aimed at accelerating global on-chain payments. The company assures that user accounts and underlying assets will remain secure throughout the migration, with existing products and services continuing to operate normally.