Mnemonic words are another manifestation of plaintext private keys, first proposed by the BIP39 proposal, with the aim of helping users remember complex private keys. Mnemonic words are generally composed of 12, 15, 18, and 21 words, all of which are taken from a fixed vocabulary and generated in a certain algorithm. Therefore, users do not need to worry about randomly entering 12 words to generate an address. Anyone who receives your mnemonic can effortlessly take away your assets. So after users backup mnemonics, they must pay attention to three points:
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Use physical media as much as possible for backup, such as writing with a pen on paper, etc. Do not take screenshots or take photos and place them in networked devices to prevent hackers from stealing;
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Verify multiple times whether the backed up mnemonic words are correct. If one or two words are copied incorrectly, it will bring huge difficulties to retrieve the correct mnemonic words in the future;
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Properly store the backed up mnemonic words and take anti-theft and anti loss measures