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How does a block of data on a blockchain get locked?

How does a block of data on a blockchain get locked?
It gets double-checked by the people with access to the public ledger.
The government reviews and verifies all blocks of data.
Financial institutions review all blocks of data related to cryptocurrency.
Blocks of data are locked since they are unalterable.




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  1. The correct answer is: Blocks of data are locked since they are unalterable.

    Explanation: Once a block is added to a blockchain, it’s locked in place due to the cryptographic hash functions that link it to the previous block. This ensures that the data cannot be altered without changing all subsequent blocks, which is highly computationally expensive and practically impossible in a secure network. This immutability feature is what prevents tampering and ensures the integrity of the blockchain.

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