How much secure the blockchain is?
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The blocks located in the blockchain, store transaction data as well as hashes and timestamps.
is a unique reference number that represents the data stored in the block.
shows the creation or modification time of the block.
When someone tries to change the data of a block, its hash also changes, as well as the hash of the next block, also changes.
Similarly, the hash changes in every block in the blockchain and the data becomes invalid.
Therefore it becomes necessary to change the data of every block, which is impossible.
The data in the blockchain technology is secure.
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