Bip39 Vs Slip39. Is passphrase similar to PIN? No, a passphrase is not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety towards your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A https://socialmediatotal.com/story4177283/bip39-https-linktr-ee-bip39-about-ian-coleman-bip39