Bip39 Ian Coleman. 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 security towards your wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://binksites.com/story8367758/bip39-wallet-https-linktr-ee-bip39-what-does-ian-coleman-bip39-mean