Bip39 Seed. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection to your wallet that actually works alongside your seed phrase to encrypt and guard your wallet. A PIN, Then again, is https://bookmarklethq.com/story18599165/bip39-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work