What is bip39 passphrase https://atavi.com/share/xbwf7vz16jgof Checksum generation: A checksum is produced from this entropy working with SHA-256 hashing, which helps verify the mnemonic's integrity later. How much safety does a passphrase add? A BIP39 passphrase considerably enhances your Bitcoin wallet’s stability. It acts as an extra, customizable layer in addition https://www.empowher.com/user/4550298