Bip39. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, from the context of Bitcoin wallets, is an extra layer of stability towards your wallet that actually works along with your seed phrase to encrypt and shield your wallet. A PIN, However, https://thefairlist.com/story8831376/bip-39-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic