Bip39 Standard. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of stability to the wallet that works along with your seed phrase to encrypt and defend your wallet. A PIN, https://nanobookmarking.com/story18568391/bip39-passphrase-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained