Bip39 Bip32. From this issue forward the seed might be prepared on paper or spoken more than telephone and this opened up new, Actual physical means of backing up the seed (numerous paper copies in various areas, durable copies on steel plates with more security from fire/flood etcetera.). As it https://maroonbookmarks.com/story18464474/word-within-the-word-list-29-bip32-vs-bip39-no-further-a-mystery