Bip39. It is really basic — if you do not concern yourself with copyright inheritance, no person else will — not your computer software or components wallet sellers, not your exchanges, and not your wealth administrators. BIP39 specifies a list of 2048 words from which the mnemonic phrase is decided https://bookmarksfocus.com/story4193745/bip39-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained