Bip39 Online. The passphrase will not be chosen through the predefined list of 2048 words – it could be any word or phrase you decide on. Certainly, BIP39 passphrases are situation-sensitive. Make sure to enter your passphrase precisely as you set it up, such as any uppercase or lowercase letters. https://siambookmark.com/story18790003/bip39-words-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic