Bip39 Standard. A mnemonic phrase, mnemonic recovery phrase or bitcoin seed is actually a list of words which retail store all the data required to Get well a bitcoin wallet. A wallet will usually produce a mnemonic backup phrase and instruct the user to write it down on paper. words, https://onelifesocial.com/story5006435/bip39-wallet-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic