Bip39 Diceware One example of manually building entropy can be flipping a coin. But if an attacker will give you a coin that is definitely weighted a little in favor of heads, your First source of entropy may have been corrupted. Never get photographs: Avoid having photos or screenshots of https://nybookmark.com/story20168082/bip39-words-list-details-fiction-and-bip39-word-list