Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of stability towards your wallet that works together with your seed phrase to encrypt and guard your wallet. A PIN, https://webookmarks.com/story4307253/bip39-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained