Bip39 Seed. 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 extra layer of stability to your wallet that actually works along with your seed phrase to encrypt and defend your wallet. A PIN, https://sitesrow.com/story9376216/bip39-list-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained