Bip39 Txt. From this issue ahead the seed could be written on paper or spoken above telephone and this opened up new, physical means of backing up the seed (a number of paper copies in various locations, long lasting copies on steel plates with more security from hearth/flood etcetera.). 0 https://damienzocqe.wikiexpression.com/3851738/the_anatomy_of_a_bip39_phrase_entropy_terms_and_security