Bip39 Word List Numbers. Is passphrase the same as PIN? No, a passphrase just isn't the same as a PIN. A passphrase, in the context of Bitcoin wallets, is an additional layer of stability on your wallet that works together with your seed phrase to encrypt and safeguard your wallet. https://infopagex.com/story4078327/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-generator