Bip39 Python. The passphrase is just not chosen with the predefined list of 2048 words – it might be any word or phrase you decide on. What constitutes a "very good wallet" is one that has obvious, easy to obtain documentation on supported BIP specifications, derivation paths, and Restoration procedures. https://kingbookmark.com/story18811657/bip39-word-list-https-linktr-ee-bip39-an-unbiased-view-of-bip-39