Bip39 Checksum. It really is simple — if you do not worry about copyright inheritance, no one else will — not your software program or hardware wallet suppliers, not your exchanges, and not your prosperity professionals. What constitutes a "good wallet" is one which has apparent, simple to obtain documentation https://socialbuzzfeed.com/story4601198/bip39-word-list-https-linktr-ee-bip39-top-guidelines-of-bip39-words