Bip39 Dictionary. Entropy values have to be sourced from a robust source of randomness. This implies flipping a fair coin, rolling a fair dice, noise measurements etc. Do NOT use phrases from publications, lyrics from songs, your birthday or steet address, keyboard mashing, or something you think that is random, https://bentdirectory.com/listings13056714/bip39-ian-coleman-https-linktr-ee-bip39-facts-about-bip39-checksum-revealed