Bip39 Seed. Should the person’s Pc is broken or its difficult disk is damaged, he can add exactly the same wallet and use the paper backup copy to obtain his Bitcoins back again. As every operator of a mnemonic phrase will get an entry to the wallet, it should be https://directoryarmy.com/listings13032600/bip39-checksum-https-linktr-ee-bip39-bip39-words-an-overview