Education·1 February 2026·4 min read
What is blockchain — the ledger you can't fake
The tech behind cryptocurrencies is, in fact, an account book copied across thousands of computers.
Blockchain is a ledger (an account book) kept not in one place, but copied across thousands of computers. Each new transaction is verified by the network and "glued" to the previous ones.
Why it's hard to fake
To fake a transaction, you'd have to change all the copies at once — practically impossible. This creates trust without a central authority. It's a new form of the same old question: how do we guarantee money is real?
