Score

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A permanent page of transactions in the record book

Because there are people who prevent edits

Because each block contains a code linked to the block before it

Thousands of participants checking and agreeing on each page

A private company auditing it periodically

Race to solve math puzzles to earn the right to add a block

Their social media accounts to prove identity

Some of their own cryptocurrency as collateral

A line on a block describing an event like sending money