Bip39 Passphrase Empty For None ) Many people back up their wallet seed phrases or non-public keys on paper, regional devices like hardware wallets or USBs, or from the cloud. Most of these alternatives have serious negatives that range from hacking to accidental reduction to disrupted cloud products and services. https://worldlistpro.com/story20348406/seeded-k-means-the-definitive-guide-to-bip39-phrase