Bip39 Seed Phrase. The passphrase is just not picked within the predefined list of 2048 words – it may be any word or phrase you choose. Mnemonics are illustration of entropy. First step will involve creating a choice regarding simply how much entropy you concentrate on Protected for the operations. https://baidubookmark.com/story18920854/bip-39-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained