Bip39 Seed Phrase. Is passphrase the same as PIN? No, a passphrase just isn't the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of security on your wallet that actually works alongside your seed phrase to encrypt and shield your wallet. https://bookmarkingfeed.com/story18966377/bip39-mnemonic-https-linktr-ee-bip39-an-unbiased-view-of-bip-39