Bip39 O'que É. From this stage forward the seed could be published on paper or spoken in excess of telephone which opened up new, physical means of backing up the seed (several paper copies in different destinations, sturdy copies on metallic plates with further protection from fireplace/flood and so forth.). https://kylernyitd.wikievia.com/10136707/the_anatomy_of_the_bip39_phrase_entropy_text_and_stability