Optimism Generates its own wallet computer software that is accessible for down load on its website, which lets you store Optimism in your Laptop or computer. For maximum safety, you could store your cryptocurrencies on the committed hardware wallet for instance a TREZOR wallet or perhaps a Ledger Nano https://financefeeds.com/tether-unveils-new-roadmap-ripple-consolidates-and-rollblock-hits-new-highs/