Bip39 Ian Coleman. The passphrase just isn't picked from your predefined list of 2048 words – it may be any word or phrase you decide on. At its core, a BIP39 passphrase modifies the cryptographic means of wallet technology. In this article’s a specialized look at how it really works: https://techonpage.com/story4914251/bip39-word-list-pdf-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled