In a blockchain, each block has a unique hash value which is dependent on the hash value of the previous block in the chain. What happens if any transaction data is changed or modified in the earlier existing blocks?
The hash value for the entire block is nullified, creating a domino effect on all subsequent blocks.
The hash values of subsequent blocks are updated as soon as they are tampered with, and the chain continues.
The transaction data in the tampered block is deleted, and a copy is created with the same hash value.
The hash values of transaction data of subsequent blocks are validated, and the chain is broken.
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In a blockchain, each block has a unique hash value which is dependent on the hash value of the previous block in the chain. What happens if any transaction data is changed or modified in the earlier existing blocks? ... The hash value for the entire block is nullified, creating a domino effect on all subsequent blocks.
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