Which of the following is true about blockchain?
Select the correct answer
Blockchain technology creates a decentralized ledger that is immutable and transparent.
All blockchains are controlled by a single central authority.
Transactions on a blockchain can be easily altered once confirmed.
Blockchains require user data to be stored centrally to verify transactions.
What does 'immutability' mean in the context of blockchain?
Information on the blockchain can be changed.
All transactions can be changed within 24 hours.
Only the newest block can be changed.
Data once written on the blockchain cannot be altered or deleted.
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Summary Quiz
Summary Quiz