Bip39 Checksum. A mnemonic phrase, mnemonic recovery phrase or bitcoin seed is a list of words which retail store all the data needed to Get better a bitcoin wallet. A wallet will commonly make a mnemonic backup phrase and instruct the consumer to jot down it down on paper. BIP39 https://socialaffluent.com/story5034705/bip39-mnemonic-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase