Bip39gen https://files.fm/u/2eemhhak2q#design Checksum development: A checksum is generated from this entropy making use of SHA-256 hashing, which helps validate the mnemonic's integrity later. For words that only have three letters, there is no 4th letter. For instance Together with the word “add”, there aren't any additional letters afterwards and so https://advicebookmarks.com/story28238102/bip39-cuda-not-known-factual-statements-about-bip39-word-list-txt-https-linktr-ee-bip39