Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of safety towards your wallet that works along with your seed phrase to encrypt and defend your wallet. A PIN, https://whitebookmarks.com/story19601090/bip39-mnemonic-https-linktr-ee-bip39-bip39-words-an-overview