Bip39 Checksum. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection to the wallet that works alongside your seed phrase to encrypt and protect your wallet. A PIN, Alternatively, is https://bookmarkspring.com/story14527516/bip39-https-linktr-ee-bip39-about-ian-coleman-bip39