Bip39 Seed. These words are then applied to make a seed, that is useful for generating prolonged keys in the hierarchical deterministic wallet. The essential thing to understand is always that any letter following the fourth a single just isn't pertinent to backing up and recovering your wallet. BIP39 Passphrase https://messiahalwis.wikitelevisions.com/6904140/the_anatomy_of_the_bip39_phrase_entropy_words_and_phrases_and_safety