Bip39 Word List Numbers. 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 protection towards your wallet that works along with your seed phrase to encrypt and secure your wallet. https://thebookmarkid.com/story18750718/bip-39-https-linktr-ee-bip39-a-review-of-bip39-generator