Bip39 word checker https://franciscougju442.bravesites.com/entries/general/Produce-Bitcoin-Addresses-from-Seed-Every-Little-Thing-You-Required-to-Know Checksum creation: A checksum is produced from this entropy applying SHA-256 hashing, which aids verify the mnemonic's integrity afterwards. For words that only have three letters, there is not any 4th letter. As an example Using the wo... https://atavi.com/share/xbwf7vz16jgof