Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, On https://digibookmarks.com/story18722045/bip-39-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic