Bip39 Github. Entropy values has to be sourced from a robust supply of randomness. This suggests flipping a good coin, rolling a good dice, sounds measurements etcetera. Never use phrases from books, lyrics from tracks, your birthday or steet tackle, keyboard mashing, or anything at all you think is random, https://directoryhand.com/listings13057734/bip39-compatible-wallet-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-words