Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of stability to the wallet that works together with your seed phrase to encrypt and safeguard your wallet. A https://get-social-now.com/story4429639/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-generator