BIP39 means Bitcoin Enhancement Proposal 39. The words are picked from a certain list of 2048 popular English words which may be utilized to the create a binary seed (your personal important). Standard recovery phrases use a selected list of 2048 words pursuing the BIP39 standard (Bitcoin Improvement Proposal 39). https://myfirstbookmark.com/story18843152/fascination-about-invalid-bip39-phrase