An 18-word mnemonic phrase improves protection by incorporating further words on the sequence. Right here’s an instance: Standard recovery phrases use a selected list of 2048 words following the BIP39 standard (Bitcoin Improvement Proposal 39). You could validate If the words are Element of the BIP39 list working with these https://pr8bookmarks.com/story18928363/5-essential-elements-for-bip39-explained