Bip39 Seed. The passphrase isn't selected in the predefined list of 2048 words – it can be any word or phrase you decide on. BIP39 is a structure implementation that lays out how copyright wallets generate the set of words (or "mnemonic codes") that make up a mnemonic sentence, And https://zanybookmarks.com/story18739278/bip39-https-linktr-ee-bip39-the-bip39-wallet-diaries