Bip39 Standard. The passphrase is just not picked within the predefined list of 2048 words – it can be any word or phrase you end up picking. At its core, a BIP39 passphrase modifies the cryptographic technique of wallet era. Below’s a technical look at how it really works: BIP-32 https://bookmarkinglive.com/story19966096/bip39-words-https-linktr-ee-bip39-not-known-details-about-bip39-list