Bip39 Pub Dev A person illustration of manually making entropy would be flipping a coin. However, if an attacker offers you a coin that is weighted a little bit in favor of heads, your Original supply of entropy may have been corrupted. Please remember to allow for recovery from mnemonic https://madbookmarks.com/story18609473/bip39-checksum-calculator-seed-phrase-generator-no-further-a-mystery