Bip39 Seed. Entropy values needs to be sourced from a solid supply of randomness. This suggests flipping a good coin, rolling a fair dice, noise measurements etc. Do NOT use phrases from guides, lyrics from tracks, your birthday or steet tackle, keyboard mashing, or everything you're thinking that is random, https://tops-directory.com/listings13025098/bip39-standard-https-linktr-ee-bip39-not-known-details-about-bip39-passphrase-generator