Electrum Bip39 Passphrase One example of manually building entropy might be flipping a coin. But when an attacker offers you a coin which is weighted a little in favor of heads, your initial source of entropy should have been corrupted. Just one list of mnemonic may be used to build https://cruxbookmarks.com/story18781155/important-phrase-and-idioms-with-bangla-meaning-what-does-bip39-mean