Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of protection towards your wallet that works along with your seed phrase to encrypt and protect your wallet. A PIN, https://yesbookmarks.com/story19133670/bip-39-https-linktr-ee-bip39-what-does-ian-coleman-bip39-mean