Crypto & Digital MoneyBlockchain
The Shared Notebook
A blockchain is a record everyone keeps a copy of
Your bank's ledger sits behind closed doors. Bitcoin's is copied on thousands of computers. Could anyone change an old payment?
You'll find out
- What a page's fingerprint is
- Why rewriting the past is a race
- The fingerprint hiding in a newspaper
Why it matters
Knowing why the record is so hard to change shows what crypto's trust rests on: math and copies, not a bank.
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