Bip39 first 4 letters http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf The final step of BIP-39 is building the actual binary seed that's then applied as a grasp critical in BIP-32 deterministic wallet or making use of other methods. Press X to abort passphrase software and maintain enhancing the passphrase. Picking out CANCEL after an abort https://thefairlist.com/story11008401/bip39-pdf-bip39-github-an-overview-https-cutt-ly-uryc5rw7