Bip39 Word List. A mnemonic phrase, mnemonic recovery phrase or bitcoin seed can be a list of words which store all the information required to recover a bitcoin wallet. A wallet will normally crank out a mnemonic backup phrase and instruct the user to write down it down on paper. https://socialbuzzfeed.com/story5010452/bip39-passphrase-https-linktr-ee-bip39-not-known-details-about-bip39-wallets