Bip39 last word checksum https://giphy.com/channel/ebliciwsah It really is extremely important the mnemonic sentences are produced from randomly chosen quantities! These quantities can be generated in a variety of alternative ways, which happen to be explained in other articles here, like "What on earth is an RNG" and Seed Phrase Era. https://social-lyft.com/story10405886/bip39-meaning-bip39-checksum-an-overview-https-cutt-ly-uryc5rw7