Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase just isn't the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of protection towards your wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://socialrator.com/story10536345/bip39-words-https-linktr-ee-bip39-top-guidelines-of-bip39-words