Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of stability to your wallet that works alongside your seed phrase to encrypt and safeguard your wallet. A PIN, On https://socialrus.com/story19881058/bip39-words-https-linktr-ee-bip39-not-known-details-about-bip39-wallets