Optimism produces its very own wallet application which is obtainable for download on its website, which allows you to store Optimism on your Computer system. For maximum safety, you could store your cryptocurrencies over a dedicated hardware wallet such as a TREZOR wallet or maybe a Ledger Nano X. https://financefeeds.com/37-7m-pepe-unchained-vs-129m-blockdag-which-is-the-greatest-presale-of-the-decade/