Bip39-Standalone. The wallet handles the hefty lifting of changing the mnemonic words via a strategy of elaborate hashing, salting, and checksum operations into a binary "seed," that is then accustomed to deliver the all-important non-public and community encryption keys. BIP32 was the very first seed standard for hierarchical deterministic wallets. https://directory-url.com/listings13029374/bip39-mnemonic-https-linktr-ee-bip39-bip39-mnemonic-generator-fundamentals-explained