Bip39 Standard. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of stability on your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A PIN, Then https://icelisting.com/story20106779/bip39-https-linktr-ee-bip39-5-essential-elements-for-bip39-word-list