Bip39 Dictionary. Is passphrase similar to PIN? No, a passphrase just isn't the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of protection on your wallet that actually works along with your seed phrase to encrypt and shield your wallet. A PIN, https://webcastlist.com/story19825393/bip39-mnemonic-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39