Bip39 Github. The passphrase is not really picked within the predefined list of 2048 words – it can be any word or phrase you end up picking. In the event you have been to reveal your seed phrase below duress, your hidden wallets would keep on being safe and unfamiliar. https://checkbookmarks.com/story4176365/bip-39-https-linktr-ee-bip39-a-review-of-bip39-words