Bip39 Npm. Entropy values has to be sourced from a solid source of randomness. This means flipping a fair coin, rolling a fair dice, noise measurements and so forth. Never use phrases from publications, lyrics from music, your birthday or steet handle, keyboard mashing, or anything you think is random, https://1-webdirectory.com/listings13103730/bip39-vs-slip39-https-linktr-ee-bip39-bip39-github-no-further-a-mystery