Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of security for your wallet that works along with your seed phrase to encrypt and secure your wallet. A PIN, Alternatively, is https://thebookmarkage.com/story19581486/bip-39-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work