Bip39 Seed List Just one example of manually producing entropy could well be flipping a coin. But when an attacker gives you a coin which is weighted slightly in favor of heads, your First source of entropy should have been corrupted. Don't share: Never share your seed phrase with anybody. https://nybookmark.com/story20113706/bip39-word-list-generator-the-basic-principles-of-seed-phrase-generator