Bip39 Online. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of protection towards your wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, on https://bookmarkalexa.com/story5103177/bip39-wallet-https-linktr-ee-bip39-not-known-factual-statements-about-ian-coleman-bip39