An 18-word mnemonic phrase increases protection by introducing added words for the sequence. Right here’s an illustration: Standard recovery phrases use a specific list of 2048 words subsequent the BIP39 standard (Bitcoin Improvement Proposal 39). You'll be able to confirm If the words are part of the BIP39 list working https://johsocial.com/story9332934/considerations-to-know-about-bip39-word-list-pdf