Bip39 Ian Coleman. The passphrase isn't chosen with the predefined list of 2048 words – it could be any word or phrase you end up picking. Yes, BIP39 passphrases are case-delicate. Make sure to enter your passphrase precisely as you established it up, which include any uppercase or lowercase letters. https://mnobookmarks.com/story18757421/bip39-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work