Bip39 Ian Coleman. 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 stability on your wallet that works together with your seed phrase to encrypt and shield your wallet. A PIN, on https://socialdummies.com/story3800250/bip39-words-https-linktr-ee-bip39-bip39-words-an-overview