Bip39 Mnemonic. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of stability on your wallet that actually works together with your seed phrase to encrypt and shield your wallet. A PIN, on https://bookmarktune.com/story18735959/bip39-https-linktr-ee-bip39-bip39-words-fundamentals-explained