Optimism creates its very own wallet program that is certainly obtainable for download on its website, which allows you to store Optimism in your Laptop. For optimum stability, you'll be able to store your cryptocurrencies over a focused hardware wallet like a TREZOR wallet or maybe a Ledger Nano https://financefeeds.com/sui-network-back-online-after-two-hour-outage-due-to-scheduling-bug/