When you set up your own wallet, it shows you a list of 12 or 24 English words. This list is called the seed phrase, recovery phrase or backup phrase. It is the most important part of your entire Bitcoin security. Whoever knows your seed phrase can steal all your Bitcoin. Whoever loses it and no longer has a device loses all the Bitcoin. There is no customer service that can help. What is the seed phrase? From the words, your wallet calculates all your private keys and addresses. So the words are your money in text form. The app or hardware wallet is just a tool for working with it. That has …
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