Bip39 Seed. The passphrase isn't chosen from your predefined list of 2048 words – it may be any word or phrase you end up picking. This may contain creating a immediate backup, a cryptic hint that only you should comprehend, sharing portions of the passphrase with trustworthy relatives. Either way https://toplistar.com/story21587495/bip39-wallets-https-linktr-ee-bip39-not-known-details-about-bip39-list