Bip39 word list https://www.demilked.com/author/gobnettlmz/ Checksum generation: A checksum is generated from this entropy employing SHA-256 hashing, which will help validate the mnemonic's integrity afterwards. For words that only have three letters, there isn't a 4th letter. For instance with the word “increase”, there isn't any additional letters afterwards and thus https://agency-social.com/story5671230/bip39-last-word-checksum-5-essential-elements-for-bip39-word-list-pdf-https-cutt-ly-uryc5rw7