Bip39 Seed Generator. At first you ought to retailer it SEPARATELY out of your seed. Having your seed plus your passphrase in the identical spot defeats the objective of having a passphrase in the first place. BIP39 specifies a list of 2048 words from which the mnemonic phrase is preferred. https://mediajx.com/story21715219/ian-coleman-bip39-https-linktr-ee-bip39-about-ian-coleman-bip39