Bip39 Seed Phrase. The passphrase is not chosen with the predefined list of 2048 words – it could be any word or phrase you decide on. BIP39 specifies a list of 2048 words from which the mnemonic phrase is chosen. Every single word represents a variety within a binary sequence, https://tbookmark.com/story18637769/bip39-wallet-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf