Bip39 Github. Entropy values must be sourced from a strong source of randomness. What this means is flipping a good coin, rolling a good dice, noise measurements etcetera. Don't use phrases from textbooks, lyrics from tracks, your birthday or steet deal with, keyboard mashing, or something you believe is random, https://begindirectory.com/listings13069216/bip39-vs-slip39-https-linktr-ee-bip39-bip39-word-list-pdf-options