Bip39 Github. The passphrase is not chosen from the predefined list of 2048 words – it could be any word or phrase you select. And you need to have composed it down in the event you had been hoping to keep an alternative open to restore your accounts. The BIP-39 https://social-medialink.com/story4533785/bip39-mnemonic-https-linktr-ee-bip39-5-easy-facts-about-bip39-generator-described