Bip39 copyright https://www.anobii.com/en/01000289012ff9b293/profile/activity The last move of BIP-39 is creating the actual binary seed which can be then applied to be a grasp critical in BIP-32 deterministic wallet or applying other approaches. Thanks to the cryptographic style of BIP-39, a weak passphrase will not reduce the safety of the other https://zenwriting.net/keenanctdp/how-to-create-a-bip39-seed-a-step-by-step-guide