Bip39 Vs Slip39. Is passphrase the same as PIN? No, a passphrase will not be similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection towards your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://bookmarkize.com/story19405528/bip39-word-list-https-linktr-ee-bip39-bip39-generator-an-overview