Bip39 Seed. Entropy values has to be sourced from a solid supply of randomness. This implies flipping a good coin, rolling a good dice, noise measurements etcetera. Will not use phrases from textbooks, lyrics from tunes, your birthday or steet deal with, keyboard mashing, or anything at all you think https://webnamedirectory.com/listings13051299/bip39-vs-slip39-https-linktr-ee-bip39-the-greatest-guide-to-bip39-tool