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Blockchain
Security
A shared ledger that many computers agree on.
Definition
A blockchain is a database shared across many computers, where records are grouped into blocks and linked together.
In plain English
A shared ledger that many computers agree on.
Why this matters
Why it matters: It can reduce the need to trust one central party, but blockchains can still expose data if you put personal info on-chain.
Example
Example: A blockchain records transfers of a digital asset between addresses.