Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of security to the wallet that works along with your seed phrase to encrypt and defend your wallet. A PIN, On the https://mediasocially.com/story4079473/bip-39-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained