Bip39 Bip32 Or for very large security, you could possibly "roll your individual" seed phrase with dice or perhaps a calculator as offline methods. Backup: When produced, the seed phrase is displayed to the user, who is instructed to jot down it down and retail store it in a secure https://bookmarkquotes.com/story18645242/bip39-word-list-bitcoin-the-basic-principles-of-seed-phrase-generator