Bip39 checksum https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view Cryptographic Protection: The generator uses Sophisticated cryptographic methods to produce seed phrases which are just about not possible to guess or replicate. The amount stability does a passphrase increase? A BIP39 passphrase appreciably boosts your Bitcoin wallet’... https://kbookmarking.com/story19851428/bip39-passphrase-bip39-ian-coleman-for-dummies-https-x-com-tundra838554