An 18-word mnemonic phrase raises security by incorporating further words for the sequence. Right here’s an example: A simple backup program for bitcoin inside a wallet could consist in transcribing the private key into an encrypted file. The non-public essential is a random string of figures, just like this one: https://wise-social.com/story4337733/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39