Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection to your wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://bookmarkshome.com/story5175839/bip39-wallets-https-linktr-ee-bip39-the-best-side-of-bip39