Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of stability to the wallet that works together with your seed phrase to encrypt and guard your wallet. A https://bookmarkcitizen.com/story18932960/bip39-words-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic