Bip39-Standalone. Your email address will only be used to send you our e-newsletter, along with updates and offers. You could unsubscribe Anytime using the backlink A part of the newsletter. BIP39 can be a layout implementation that lays out how copyright wallets produce the list of words (or "mnemonic codes") https://tinybookmarks.com/story18812749/bip-39-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets