You don't need to know how the blockchain works to use it, but having a basic knowledge allows you to see why it's considered revolutionary. The blockchain is a digital ledger that can be programmed to record not only financial transactions, but also virtually everything of value.
Information on a blockchain exists as a shared and continually reconciled database. A blockchain database isn't stored in any single location—the records it keeps are public and easily verifiable. There's no centralized version for a hacker to corrupt, but it's accessible to anyone on the internet because it's hosted on millions of computers simultaneously.
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