Bip39. On top of that, BIP39 defines the passphrase possibility, that adds a reasonable quantity of additive safety in case your seed phrase is stolen or if not accidentally exposed. On the other hand, What's more, it adds some hazard, so it is suggested For additional experienced end users. The https://gen-directory.com/listings13053503/bip39-seed-phrase-https-linktr-ee-bip39-not-known-details-about-bip39-online