Bip39 Vs Slip39. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety to the wallet that actually works alongside your seed phrase to encrypt and guard your wallet. https://bookmarkspy.com/story20459994/bip39-mnemonic-https-linktr-ee-bip39-5-essential-elements-for-bip-39