Bip39 Standard. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of protection to the wallet that actually works along with your seed phrase to encrypt and guard your wallet. A https://total-bookmark.com/story19475750/bip39-wallet-https-linktr-ee-bip39-bip39-words-an-overview