Bip39 Seed. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety on your wallet that actually works alongside your seed phrase to encrypt and shield your wallet. A PIN, https://nybookmark.com/story20337918/bip39-mnemonic-https-linktr-ee-bip39-an-unbiased-view-of-bip-39