Bip39 Standard. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of security to your wallet that actually works along with your seed phrase to encrypt and protect your wallet. A PIN, on https://livebookmarking.com/story19054660/bip39-https-linktr-ee-bip39-the-best-side-of-bip39