Bip39 Passphrase. Before everything you ought to retailer it SEPARATELY from the seed. Having your seed and your passphrase in precisely the same place defeats the goal of getting a passphrase to start with. BIP39 specifies a list of 2048 words from which the mnemonic phrase is preferred. Just about https://bookmarkstime.com/story19157980/bip39-passphrase-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled