Bip 32 Word List. From this place forward the seed could possibly be written on paper or spoken around telephone which opened up new, physical means of backing up the seed (various paper copies in several spots, tough copies on metallic plates with more safety from hearth/flood and many others.). https://edwinriync.wikibuysell.com/1111237/the_anatomy_of_the_bip39_phrase_entropy_phrases_and_security