Bip39 Checksum. Firstly you'll want to retail store it SEPARATELY from the seed. Getting your seed plus your passphrase in a similar place defeats the purpose of possessing a passphrase to start with. BIP39 is a design and style implementation that lays out how copyright wallets create the set of https://sociallytraffic.com/story3541033/bip39-words-https-linktr-ee-bip39-bip39-words-fundamentals-explained