Bip39. Entropy values has to be sourced from a strong source of randomness. This suggests flipping a good coin, rolling a good dice, noise measurements etcetera. Never use phrases from guides, lyrics from tunes, your birthday or steet handle, keyboard mashing, or something you're thinking that is random, mainly because https://directory-farm.com/listings13057407/bip39-https-linktr-ee-bip39-rumored-buzz-on-bip39-mnemonic-code-converter-tool