Bip39 Mnemonic. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of safety to your wallet that actually works alongside your seed phrase to encrypt and defend your wallet. A PIN, https://socialwoot.com/story20797109/bip-39-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase