Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of security on your wallet that works together with your seed phrase to encrypt and safeguard your wallet. A https://e-bookmarks.com/story4404060/bip39-list-https-linktr-ee-bip39-the-best-side-of-bip39-mnemonic