Bip39 Words. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of security to your wallet that works together with your seed phrase to encrypt and safeguard your wallet. https://thebookmarklist.com/story18692518/bip39-mnemonic-https-linktr-ee-bip39-bip39-wallets-things-to-know-before-you-buy