Bip39 Github. Entropy values should be sourced from a strong source of randomness. This means flipping a good coin, rolling a good dice, sounds measurements etcetera. Do NOT use phrases from textbooks, lyrics from songs, your birthday or steet tackle, keyboard mashing, or something you think that is random, since https://myindexdirectory.com/listings554416/bip39-tool-https-linktr-ee-bip39-bip39-passphrase-generator-fundamentals-explained