Bip39 Seed. Entropy values should be sourced from a powerful source of randomness. This means flipping a good coin, rolling a good dice, noise measurements and so forth. Will not use phrases from textbooks, lyrics from music, your birthday or steet handle, keyboard mashing, or something you believe is random, https://vital-directory.com/listings13053993/bip39-word-list-numbers-https-linktr-ee-bip39-about-bip39