Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase just isn't the same as a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of protection on your wallet that actually works alongside your seed phrase to encrypt and shield your wallet. A PIN, https://bookmarkworm.com/story18630135/bip39-passphrase-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled