An 18-word mnemonic phrase increases protection by including extra words into the sequence. Listed here’s an instance: Standard recovery phrases use a specific list of 2048 words adhering to the BIP39 standard (Bitcoin Advancement Proposal 39). You are able to verify In case your words are part of the BIP39 https://web.archive.org/web/20241123074420/https://bip39-phrase.com/