Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase isn't the same as a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of security towards your wallet that actually works along with your seed phrase to encrypt and guard your wallet. A PIN, Alternatively, https://bookmark-group.com/story4191868/bip39-mnemonic-https-linktr-ee-bip39-what-does-ian-coleman-bip39-mean