Bip39 Github. The passphrase will not be chosen in the predefined list of 2048 words – it can be any word or phrase you end up picking. Mnemonics are representation of entropy. First step requires building a call as to the amount of entropy you think about Safe and sound https://sound-social.com/story9078317/bip-39-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic