Bip39 Tool. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, Alternatively, is https://socialrus.com/story18016372/bip39-wallet-https-linktr-ee-bip39-about-ian-coleman-bip39