Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of stability on your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://expressbookmark.com/story19135562/bip39-wallet-https-linktr-ee-bip39-not-known-factual-statements-about-ian-coleman-bip39