Hi, I have an account with Coinbase. How do I back up my wallet to USB or hardrive?
As Coinbase don’t release the private keys to wallets they hold, this is impossible. The best way to securely store coins is not on any exchange or online wallet, but in a personal wallet under your control – ideally a hardware wallet. See our wallet reviews section for more on this. You are only able to make backups of your personal wallet.
As Coinbase are fairly evil these days (see their latest insider trading scandal and lack of SegWit support), I’m advising people to use alternative exchanges. Gemini is very similar and very good.