Bip39 One. These words are then made use of to make a seed, which can be used for creating prolonged keys in the hierarchical deterministic wallet. The easiest way to store you seed Get better phrase is with a Billfodl which you can purchase by clicking on the image below. https://johnathanjufpy.wikifordummies.com/8300356/the_anatomy_of_the_bip39_phrase_entropy_text_and_protection