Bip39 checksum calculator http://www.video-bookmark.com/user/tucanewhmt This is why you'll want to make a backup of your respective seed phrase utilizing metal copyright wallet like Coinplate, which are 100% chrome steel and BIP39 compatible. By way of example, when you at first arrange your wallet and produced seed working with Ledger Nano https://www.gamespot.com/profile/pothirpeib/