Bip39 Dictionary. Is passphrase similar to PIN? No, a passphrase will not be the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of stability to the wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://infopagex.com/story4011984/bip-39-https-linktr-ee-bip39-5-essential-elements-for-bip-39